866-861-6317
Ask an Expert
Medical Nature 4 Outdoor Infrared Sauna 1 Person
Ships within 7-10 Days business days | FREE SHIPPING
- Regular price
- $5,589.00
- Regular price
-
$11,999.00 - Sale price
- $5,589.00
- Unit price
- per
Save $6,410.00
Save $6,410.00 USD
SHIPPING FREE
7-10 Days
Description
Product: Nature 4 Outdoor Infrared Sauna by Medical Saunas™
Type: Outdoor full spectrum infrared sauna with removable bench for hot yoga
Capacity: 1 person
Price range: Check current sale price above
Key fact: The entry-level outdoor model in the Nature Series. Designed by 48 doctors. 6 Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard heaters. Built for permanent outdoor placement with extra-thick weather-resistant hemlock walls and roof overhang. Removable bench for hot yoga. Plugs into a single 120V/25-30A outlet. 2,200W. 883 lbs. Hand-assembled in Los Angeles, CA.
Nature 4 Outdoor Infrared Sauna: 1-Person Hot Yoga Sauna for Your Backyard
The Nature 4 is the most compact outdoor infrared sauna in the Nature Series™. It seats one person, runs 6 Ultra Full Spectrum Outdoor Heaters at 2,200W, and is built for permanent outdoor placement on patios, decks, and backyards. Like every Nature Series model, it features a removable bench that converts the cabin into a personal hot yoga space.
This is the outdoor sauna you choose when you want the full doctor-designed Medical Saunas experience in an outdoor-rated build but only need room for one. The 36″ × 36″ interior is compact enough for small yards and balconies. The 120V/25-30A single-plug electrical setup is the lowest-power option in the Nature lineup, making installation simpler and cheaper.
Looking for the indoor Medical 4 sauna?
This is the Nature 4, an outdoor model. If you want an indoor infrared sauna for 1-2 people, see the Medical 4 Full Spectrum Indoor Sauna. The Medical 4 has front heaters, chromatic therapy, and plugs into a standard 15A outlet.
Doctor Recommended
6 Outdoor Heaters (100X Stronger)
Removable Bench for Yoga
Weather-Resistant Outdoor Build
1 Person
3-Year Warranty
Handcrafted in USA
Electrical note: The Nature 4 requires a 120V/25-30A dedicated circuit. A standard household outlet is 15A, so you will likely need an electrician to install a dedicated 30A breaker and run a line to your outdoor location. This is a single-plug setup (no 220V required). Typical electrician cost: $150-$400 depending on distance from your panel.
Nature 4 Outdoor Sauna Specifications
| Capacity | 1 Person |
| Heaters | 6 Ultra Full Spectrum Outdoor Heaters™ (100X Stronger) |
| Heat Type | Dry Sauna (infrared) |
| Interior Dimensions (W×D×H) | 36″ × 36″ × 75″ |
| Exterior w/ Overhang (W×D×H) | 40″ × 40″ × 97″ |
| Operating Voltage | 120V / 25-30 Amp (dedicated circuit) |
| Wire Type | One 120V plug |
| Wattage | 2,200W (Spectrum) |
| Weight | 883 lbs |
| Construction | Natural Canadian Hemlock, extra-thick weather-resistant walls |
| Bench | Removable (converts to hot yoga space) |
| Assembly | Clasp-together, no tools needed (2+ people recommended) |
| Door | Tempered Glass |
| Warranty | 3 Years (Labor + Parts + Structure) included free |
What’s Included
6 Ultra Full Spectrum Outdoor Heaters (100X Stronger)
3D Surround Heat Therapy™
Hot/Cold Cleansing System™
The Detox Routine™
Insulated Airflow System™
Safe Cool Down System™
Skin Rejuvenation System™
Rapid Internal Heating System™
Energy Efficient Heating System™
Chromatic Therapy System™
LED Control Panel™
Bluetooth Speaker System + Radio
Removable Bench for Hot Yoga
Protective Heater Covers
Extra-Thick Weather-Resistant Walls
Roof Vent + Roof Overhang
Tempered Glass Door
Backrests Included
Omni-Directional Heating™
Clasp-Together Assembly
Hot Yoga in a 1-Person Outdoor Sauna
Remove the bench and the Nature 4 becomes a personal hot yoga room. The 36″ × 36″ interior with 75″ headroom gives you room for seated poses, kneeling stretches, and modified standing poses. Full spectrum infrared heat loosens muscles and joints, increases range of motion, and boosts circulation while you hold positions.
The Nature 4 is sized for solo yoga sessions. For standing poses that need more floor space, step up to the Nature 5 (46″ × 41″) or Nature 6 (56″ × 41″).
Nature 4 Outdoor Sauna Features
100X Stronger Outdoor Heaters
The Nature Series uses Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard indoor heaters. Outdoor saunas face wind, cold ambient temperatures, and heat loss through the door. These heaters compensate for all of that, maintaining consistent cabin temperature even in cooler weather. The full spectrum output covers near, mid, and far infrared wavelengths.
Extra-Thick Weather-Resistant Walls
Built for year-round outdoor placement. The extra-thick hemlock panels provide insulation well beyond indoor standards. The roof overhang extends past the cabin walls to protect the door area from rain and direct sun. All hardware is rated for outdoor conditions.
Protective Heater Covers
Every heater panel has a protective cover made from the same hemlock wood as the cabin. This prevents accidental contact with hot surfaces during yoga poses or while getting settled. A safety feature most outdoor sauna brands skip.
Removable Bench with Backrests
The bench lifts out without tools. With the bench in, one person sits with backrest support. With the bench removed, you have open floor space for a yoga mat, stretching, or standing therapy. Backrests included at no extra cost.
Natural Canadian Hemlock Construction
Hemlock was chosen for outdoor durability and health properties. It hardens with age, handles moisture better than many softwoods, and has natural astringent properties that enhance skin cleansing during sessions. Releases a clean, natural aroma when heated.
Rapid Internal Heating System™
Reaches operating temperature in about 40 minutes despite being outdoors. The 6 heaters at 2,200W combined with extra-thick insulation keep the cabin hot even when outdoor temperatures drop. Most competing outdoor saunas take well over an hour.
Nature 4 vs Nature 5: Choosing the Right Size
1 person vs 2 people — The Nature 4 is a solo sauna. If you want to share with a partner, the Nature 5 seats two.
36″ × 36″ vs 46″ × 41″ interior — The the next size up is 10 inches wider and 5 inches deeper. That extra space matters for yoga: more room for standing poses and a wider yoga mat.
6 heaters vs 7 heaters — Both use the same 100X Stronger Outdoor Heaters. The the next size up adds one more panel for its larger cabin.
120V/25-30A vs 120V/40A — The Nature 4 draws less power. Both use a single 120V plug (no 220V). The Nature 4's lower amperage means a slightly cheaper electrical install.
Choose the Nature 4 if you sauna solo and want the smallest outdoor footprint (40″ × 40″ exterior). Choose the Nature 5 if you need 2-person capacity or want more yoga space.
Who Is the Nature 4 Outdoor Sauna For?
- Solo sauna users who want an outdoor unit for patios, decks, or small backyards
- Hot yoga practitioners who want a private heated space for solo sessions
- Homeowners with limited outdoor space (40″ × 40″ footprint)
- Buyers who want the simplest electrical setup in the Nature lineup (120V/25-30A)
- Anyone who prefers outdoor sauna sessions over indoor placement
- Entry-level buyers looking for a doctor-designed outdoor infrared sauna
Indoor Medical Sauna vs Outdoor Nature Sauna
Not sure if you need an indoor or outdoor model? Here's how they differ:
Nature Series (outdoor): Weather-rated construction, roof overhang, 100X Stronger heaters, removable bench for yoga, protective heater covers. Designed for patios, decks, backyards.
Medical Series (indoor): Wider feature range (silent heating, audio theater, chromatic therapy, front heaters). Not weather-rated. Designed for rooms, garages, basements.
If you want a 1-person indoor sauna, see the Medical 3 (6 heaters, 120V/15A standard outlet, $3,299+). If you want a 1-2 person indoor sauna with front heaters and more features, see the Medical 4.
Designed and Built in the USA
Medical Saunas™ are designed, developed, and hand-assembled at the company's Los Angeles factory. The Nature Series outdoor saunas go through additional weatherproofing and quality checks before shipping. Every unit ships direct from LA.
Nature Series™ Outdoor Sauna Full Feature Comparison
| Feature / Spec | Nature 4™ | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ |
|---|---|---|---|---|---|
| Hot/Cold Cleansing System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Detox Routine™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Insulated Airflow System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Safe Cool Down System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Skin Rejuvenation System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Tempered Glass Door | ✓ | ✓ | ✓ | ✓ | ✓ |
| LED Control Panel™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Clasp-Together Assembly | ✓ | ✓ | ✓ | ✓ | ✓ |
| Bluetooth + Radio | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3D Surround Heat Outdoor | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hot Yoga Sauna | ✓ | ✓ | ✓ | ✓ | ✓ |
| Rapid Internal Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Energy Efficient Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Chromatic Therapy System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Omni-Directional Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Extra-Thick Weather Walls | ✓ | ✓ | ✓ | ✓ | ✓ |
| Roof Vent | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hybrid Dry & Steam Sauna | — | — | — | ✓ | ✓ |
| Deep Ergonomic Bench Seating | — | — | — | ✓ | ✓ |
| Interior Reading Light™ | — | — | — | ✓ | ✓ |
| Silent Heating System™ | — | — | — | ✓ | ✓ |
| Audio Theater System™ | — | — | — | ✓ | ✓ |
| 15% Thicker Panels | — | — | — | ✓ | ✓ |
| Executive SPA Design | — | — | — | — | ✓ |
| Extra-Insulated Airflow™ | — | — | — | — | ✓ |
| Extra-Rapid Heating™ | — | — | — | — | ✓ |
| SPECIFICATIONS | |||||
| Capacity | 1 person | 2 people | 3 people | 3-4 people | 4-6 people |
| Heaters (100X Stronger) | 6 | 7 | 9 | 10 | 11 |
| Heat Type | Dry | Dry | Dry | Dry or Steam | Dry or Steam |
| Wood | Hemlock | Hemlock | Hemlock | Cedar | Cedar |
| Interior (W×D×H) | 36×36×75″ | 46×41×75″ | 56×41×75″ | 66.2×53.2×75″ | 66.2×63.2×79″ |
| Exterior w/ Overhang | 40×40×97″ | 50×45×97″ | 60×45×97″ | 77.3×64.2×89″ | 75.9×74.6×91.2″ |
| Voltage | 120V/25-30A | 120V/40A | 120V/40A | 220V/40-50A | 220V/50A |
| Wire Type | One 120V plug | One 120V plug | One 120V plug | 120V + 220V hardwire | 120V + 220V hardwire |
| Watts | 2,200W | 2,600W | 3,400W | 3,400W + 6,000W stove | 4,000W + 8,000W stove |
| Weight | 883 lbs | 947 lbs | 1,031 lbs | 1,186 lbs | 1,614 lbs |
| You’re here | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ | |
Shipping and Warranty
Free Curbside Shipping
Ships within 5-12 business days. Delivered curbside at no charge. White glove technician assembly available at checkout (no stairs +$899 / with stairs +$999). Electrical installation is separate (your local electrician).
3-Year Warranty Included
Covers labor, parts, and structure at no extra cost. Extended warranty add-ons: 1-year (+$750) or 2-year (+$1,500) available at checkout.
120% Price Match
We beat verified prices by 20% of the difference
Free Shipping
Curbside delivery included at no charge
Authorized Retailer
Certified seller with full manufacturer support
3-Year Warranty
Labor + Parts + Structure included free
Nature 4 Outdoor Sauna: Frequently Asked Questions
What is the difference between the Nature 4 and Medical 4 sauna?
The Nature 4 is an outdoor sauna. The Medical 4 is an indoor sauna. The Nature 4 has weather-resistant walls, a roof overhang, 100X Stronger outdoor heaters, protective heater covers, and a removable bench for yoga. The Medical 4 has front heaters, silent heating, chromatic therapy, and a reading light, but is not weather-rated. The Nature 4 requires a 120V/25-30A dedicated circuit. The Medical 4 plugs into a standard 15A household outlet. Choose the Nature 4 for outdoor placement. Choose the Medical 4 for indoor use.
Is the Nature 4 big enough for yoga?
The Nature 4 interior is 36 x 36 inches with 75 inches of headroom. With the bench removed, you have room for seated yoga, kneeling stretches, and modified standing poses. For full standing yoga with more room to move, the the next size up (46 x 41 inches) or Nature 6 (56 x 41 inches) give you more floor space.
Can the Nature 4 stay outside year-round?
Yes. The Nature 4 is built for permanent outdoor placement. Extra-thick hemlock walls handle rain, humidity, UV, and temperature swings. The roof overhang protects the entry area. All hardware is outdoor-rated. It performs in all four seasons.
Does the Nature 4 need an electrician?
Most likely yes. The Nature 4 requires a 120V/25-30A dedicated circuit. Standard household outlets are 15A. An electrician needs to install a dedicated 30A breaker and run a line to your outdoor location. Cost is typically $150-$400 depending on distance from your panel. No 220V wiring is needed.
What is a medical grade infrared sauna?
A medical grade infrared sauna is one designed by healthcare professionals for measurable therapeutic outcomes. The Nature 4 is part of the Medical Saunas lineup, developed over 10 years with input from 48 doctors. Every feature targets documented health benefits: pain relief, cardiovascular improvement, detoxification, immune support, and better sleep. It differs from standard saunas in that each component was selected based on clinical research.
How much space do I need for the Nature 4?
The exterior with roof overhang is 40 x 40 inches (about 3.3 x 3.3 feet) and 97 inches tall (just over 8 feet). Allow extra clearance for door swing and airflow. You need a level, solid surface like a concrete pad, reinforced deck, or paver patio that can support 883 lbs. This is the smallest footprint in the Nature Series.
What is the difference between the Nature 4 and Nature 5?
The the next size up fits 2 people (vs 1), has 7 heaters (vs 6), runs at 2,600W (vs 2,200W), and has a larger interior at 46 x 41 inches (vs 36 x 36). Both use hemlock construction, dry infrared heat, and a single 120V plug. The the next size up needs a 40A circuit vs the Nature 4's 25-30A. Choose the Nature 4 for solo use and the smallest footprint. Choose the the next size up for 2-person capacity or more yoga space.
Does the Nature 4 use infrared or steam heat?
The Nature 4 is a dry infrared sauna only. It uses 6 full spectrum infrared heaters and does not have a steam stove. For a hybrid outdoor sauna with both infrared and steam, look at the Nature 7 (dry + steam, cedar construction, 220V) or Nature 8 Plus.
How heavy is the Nature 4 outdoor sauna?
883 lbs fully assembled. You need a level surface that can support this weight, like a concrete pad or reinforced deck. Two or more people are needed for assembly. White glove technician installation is available at checkout.
BEST FOR:
Solo outdoor sauna sessions
1-person. Weather-sealed cedar. UV-treated exterior. Place it on a patio, deck, or backyard and plug in.
Hot yoga at home outdoors
Interior designed for in-sauna yoga. Full spectrum heat while surrounded by fresh air and nature.
Small patios and backyards
Compact 51x42 inch footprint. 120V standard outlet. No electrician. No dedicated circuit.
Year-round outdoor wellness
All-weather construction. Use in summer heat or winter cold. UV coating protects the cedar.
Financing Options Available
We work with four financing partners so you can spread the cost over time. Apply with more than one to compare offers.
Brickhouse Capital
Up to $250K, one-page app. Approval in 24 hours. Lease or EFA options.
Reliant Capital
Up to $500K app-only. 3-24 month deferred payments. 2-4 hour approvals.
Acorn Finance
30+ lenders, one app. Prequalify in 60 seconds. Terms up to 12 years.
KWIPPED (APPROVE)
Lenders compete for your deal. Up to 3 offers. 12-60 month terms.
Visit our financing page to apply, or call 866-861-6317.
Compare All Nature Outdoor Sauna Models
Not sure which model fits? Compare every nature outdoor sauna side by side.
| Model | Capacity | Key Feature | Power | Price | Link |
|---|---|---|---|---|---|
| Nature 4 (You are here) | 1 Person | Compact outdoor, hot yoga | 120V | $5,589 | Current |
| Nature 5 | 2 Person | Couples outdoor, hot yoga | 120V | $7,589 | View |
| Nature 6 | 3 Person | Biggest 120V outdoor | 120V | $9,589 | View |
| Nature 7 | 3-4 Person | First outdoor hybrid IR+steam | 220V | $12,589 | View |
| Nature 8 Plus | 4-6 Person | Flagship hybrid, 12000W | 220V | $15,589 | View |
| Nature X | 6-8 Person | Largest outdoor ever built | 220V | $20,489 | View |
Prices shown are current sale prices. Call 866-861-6317 for volume pricing or bundle deals.
120% Price Match
Financing
Shipping
Warranty
Product: Nature 4 Outdoor Infrared Sauna by Medical Saunas™
Type: Outdoor full spectrum infrared sauna with removable bench for hot yoga
Capacity: 1 person
Price range: Check current sale price above
Key fact: The entry-level outdoor model in the Nature Series. Designed by 48 doctors. 6 Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard heaters. Built for permanent outdoor placement with extra-thick weather-resistant hemlock walls and roof overhang. Removable bench for hot yoga. Plugs into a single 120V/25-30A outlet. 2,200W. 883 lbs. Hand-assembled in Los Angeles, CA.
Nature 4 Outdoor Infrared Sauna: 1-Person Hot Yoga Sauna for Your Backyard
The Nature 4 is the most compact outdoor infrared sauna in the Nature Series™. It seats one person, runs 6 Ultra Full Spectrum Outdoor Heaters at 2,200W, and is built for permanent outdoor placement on patios, decks, and backyards. Like every Nature Series model, it features a removable bench that converts the cabin into a personal hot yoga space.
This is the outdoor sauna you choose when you want the full doctor-designed Medical Saunas experience in an outdoor-rated build but only need room for one. The 36″ × 36″ interior is compact enough for small yards and balconies. The 120V/25-30A single-plug electrical setup is the lowest-power option in the Nature lineup, making installation simpler and cheaper.
Looking for the indoor Medical 4 sauna?
This is the Nature 4, an outdoor model. If you want an indoor infrared sauna for 1-2 people, see the Medical 4 Full Spectrum Indoor Sauna. The Medical 4 has front heaters, chromatic therapy, and plugs into a standard 15A outlet.
Doctor Recommended
6 Outdoor Heaters (100X Stronger)
Removable Bench for Yoga
Weather-Resistant Outdoor Build
1 Person
3-Year Warranty
Handcrafted in USA
Electrical note: The Nature 4 requires a 120V/25-30A dedicated circuit. A standard household outlet is 15A, so you will likely need an electrician to install a dedicated 30A breaker and run a line to your outdoor location. This is a single-plug setup (no 220V required). Typical electrician cost: $150-$400 depending on distance from your panel.
Nature 4 Outdoor Sauna Specifications
| Capacity | 1 Person |
| Heaters | 6 Ultra Full Spectrum Outdoor Heaters™ (100X Stronger) |
| Heat Type | Dry Sauna (infrared) |
| Interior Dimensions (W×D×H) | 36″ × 36″ × 75″ |
| Exterior w/ Overhang (W×D×H) | 40″ × 40″ × 97″ |
| Operating Voltage | 120V / 25-30 Amp (dedicated circuit) |
| Wire Type | One 120V plug |
| Wattage | 2,200W (Spectrum) |
| Weight | 883 lbs |
| Construction | Natural Canadian Hemlock, extra-thick weather-resistant walls |
| Bench | Removable (converts to hot yoga space) |
| Assembly | Clasp-together, no tools needed (2+ people recommended) |
| Door | Tempered Glass |
| Warranty | 3 Years (Labor + Parts + Structure) included free |
What’s Included
6 Ultra Full Spectrum Outdoor Heaters (100X Stronger)
3D Surround Heat Therapy™
Hot/Cold Cleansing System™
The Detox Routine™
Insulated Airflow System™
Safe Cool Down System™
Skin Rejuvenation System™
Rapid Internal Heating System™
Energy Efficient Heating System™
Chromatic Therapy System™
LED Control Panel™
Bluetooth Speaker System + Radio
Removable Bench for Hot Yoga
Protective Heater Covers
Extra-Thick Weather-Resistant Walls
Roof Vent + Roof Overhang
Tempered Glass Door
Backrests Included
Omni-Directional Heating™
Clasp-Together Assembly
Hot Yoga in a 1-Person Outdoor Sauna
Remove the bench and the Nature 4 becomes a personal hot yoga room. The 36″ × 36″ interior with 75″ headroom gives you room for seated poses, kneeling stretches, and modified standing poses. Full spectrum infrared heat loosens muscles and joints, increases range of motion, and boosts circulation while you hold positions.
The Nature 4 is sized for solo yoga sessions. For standing poses that need more floor space, step up to the Nature 5 (46″ × 41″) or Nature 6 (56″ × 41″).
Nature 4 Outdoor Sauna Features
100X Stronger Outdoor Heaters
The Nature Series uses Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard indoor heaters. Outdoor saunas face wind, cold ambient temperatures, and heat loss through the door. These heaters compensate for all of that, maintaining consistent cabin temperature even in cooler weather. The full spectrum output covers near, mid, and far infrared wavelengths.
Extra-Thick Weather-Resistant Walls
Built for year-round outdoor placement. The extra-thick hemlock panels provide insulation well beyond indoor standards. The roof overhang extends past the cabin walls to protect the door area from rain and direct sun. All hardware is rated for outdoor conditions.
Protective Heater Covers
Every heater panel has a protective cover made from the same hemlock wood as the cabin. This prevents accidental contact with hot surfaces during yoga poses or while getting settled. A safety feature most outdoor sauna brands skip.
Removable Bench with Backrests
The bench lifts out without tools. With the bench in, one person sits with backrest support. With the bench removed, you have open floor space for a yoga mat, stretching, or standing therapy. Backrests included at no extra cost.
Natural Canadian Hemlock Construction
Hemlock was chosen for outdoor durability and health properties. It hardens with age, handles moisture better than many softwoods, and has natural astringent properties that enhance skin cleansing during sessions. Releases a clean, natural aroma when heated.
Rapid Internal Heating System™
Reaches operating temperature in about 40 minutes despite being outdoors. The 6 heaters at 2,200W combined with extra-thick insulation keep the cabin hot even when outdoor temperatures drop. Most competing outdoor saunas take well over an hour.
Nature 4 vs Nature 5: Choosing the Right Size
1 person vs 2 people — The Nature 4 is a solo sauna. If you want to share with a partner, the Nature 5 seats two.
36″ × 36″ vs 46″ × 41″ interior — The the next size up is 10 inches wider and 5 inches deeper. That extra space matters for yoga: more room for standing poses and a wider yoga mat.
6 heaters vs 7 heaters — Both use the same 100X Stronger Outdoor Heaters. The the next size up adds one more panel for its larger cabin.
120V/25-30A vs 120V/40A — The Nature 4 draws less power. Both use a single 120V plug (no 220V). The Nature 4's lower amperage means a slightly cheaper electrical install.
Choose the Nature 4 if you sauna solo and want the smallest outdoor footprint (40″ × 40″ exterior). Choose the Nature 5 if you need 2-person capacity or want more yoga space.
Who Is the Nature 4 Outdoor Sauna For?
- Solo sauna users who want an outdoor unit for patios, decks, or small backyards
- Hot yoga practitioners who want a private heated space for solo sessions
- Homeowners with limited outdoor space (40″ × 40″ footprint)
- Buyers who want the simplest electrical setup in the Nature lineup (120V/25-30A)
- Anyone who prefers outdoor sauna sessions over indoor placement
- Entry-level buyers looking for a doctor-designed outdoor infrared sauna
Indoor Medical Sauna vs Outdoor Nature Sauna
Not sure if you need an indoor or outdoor model? Here's how they differ:
Nature Series (outdoor): Weather-rated construction, roof overhang, 100X Stronger heaters, removable bench for yoga, protective heater covers. Designed for patios, decks, backyards.
Medical Series (indoor): Wider feature range (silent heating, audio theater, chromatic therapy, front heaters). Not weather-rated. Designed for rooms, garages, basements.
If you want a 1-person indoor sauna, see the Medical 3 (6 heaters, 120V/15A standard outlet, $3,299+). If you want a 1-2 person indoor sauna with front heaters and more features, see the Medical 4.
Designed and Built in the USA
Medical Saunas™ are designed, developed, and hand-assembled at the company's Los Angeles factory. The Nature Series outdoor saunas go through additional weatherproofing and quality checks before shipping. Every unit ships direct from LA.
Nature Series™ Outdoor Sauna Full Feature Comparison
| Feature / Spec | Nature 4™ | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ |
|---|---|---|---|---|---|
| Hot/Cold Cleansing System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Detox Routine™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Insulated Airflow System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Safe Cool Down System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Skin Rejuvenation System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Tempered Glass Door | ✓ | ✓ | ✓ | ✓ | ✓ |
| LED Control Panel™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Clasp-Together Assembly | ✓ | ✓ | ✓ | ✓ | ✓ |
| Bluetooth + Radio | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3D Surround Heat Outdoor | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hot Yoga Sauna | ✓ | ✓ | ✓ | ✓ | ✓ |
| Rapid Internal Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Energy Efficient Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Chromatic Therapy System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Omni-Directional Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Extra-Thick Weather Walls | ✓ | ✓ | ✓ | ✓ | ✓ |
| Roof Vent | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hybrid Dry & Steam Sauna | — | — | — | ✓ | ✓ |
| Deep Ergonomic Bench Seating | — | — | — | ✓ | ✓ |
| Interior Reading Light™ | — | — | — | ✓ | ✓ |
| Silent Heating System™ | — | — | — | ✓ | ✓ |
| Audio Theater System™ | — | — | — | ✓ | ✓ |
| 15% Thicker Panels | — | — | — | ✓ | ✓ |
| Executive SPA Design | — | — | — | — | ✓ |
| Extra-Insulated Airflow™ | — | — | — | — | ✓ |
| Extra-Rapid Heating™ | — | — | — | — | ✓ |
| SPECIFICATIONS | |||||
| Capacity | 1 person | 2 people | 3 people | 3-4 people | 4-6 people |
| Heaters (100X Stronger) | 6 | 7 | 9 | 10 | 11 |
| Heat Type | Dry | Dry | Dry | Dry or Steam | Dry or Steam |
| Wood | Hemlock | Hemlock | Hemlock | Cedar | Cedar |
| Interior (W×D×H) | 36×36×75″ | 46×41×75″ | 56×41×75″ | 66.2×53.2×75″ | 66.2×63.2×79″ |
| Exterior w/ Overhang | 40×40×97″ | 50×45×97″ | 60×45×97″ | 77.3×64.2×89″ | 75.9×74.6×91.2″ |
| Voltage | 120V/25-30A | 120V/40A | 120V/40A | 220V/40-50A | 220V/50A |
| Wire Type | One 120V plug | One 120V plug | One 120V plug | 120V + 220V hardwire | 120V + 220V hardwire |
| Watts | 2,200W | 2,600W | 3,400W | 3,400W + 6,000W stove | 4,000W + 8,000W stove |
| Weight | 883 lbs | 947 lbs | 1,031 lbs | 1,186 lbs | 1,614 lbs |
| You’re here | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ | |
Shipping and Warranty
Free Curbside Shipping
Ships within 5-12 business days. Delivered curbside at no charge. White glove technician assembly available at checkout (no stairs +$899 / with stairs +$999). Electrical installation is separate (your local electrician).
3-Year Warranty Included
Covers labor, parts, and structure at no extra cost. Extended warranty add-ons: 1-year (+$750) or 2-year (+$1,500) available at checkout.
120% Price Match
We beat verified prices by 20% of the difference
Free Shipping
Curbside delivery included at no charge
Authorized Retailer
Certified seller with full manufacturer support
3-Year Warranty
Labor + Parts + Structure included free
Nature 4 Outdoor Sauna: Frequently Asked Questions
What is the difference between the Nature 4 and Medical 4 sauna?
The Nature 4 is an outdoor sauna. The Medical 4 is an indoor sauna. The Nature 4 has weather-resistant walls, a roof overhang, 100X Stronger outdoor heaters, protective heater covers, and a removable bench for yoga. The Medical 4 has front heaters, silent heating, chromatic therapy, and a reading light, but is not weather-rated. The Nature 4 requires a 120V/25-30A dedicated circuit. The Medical 4 plugs into a standard 15A household outlet. Choose the Nature 4 for outdoor placement. Choose the Medical 4 for indoor use.
Is the Nature 4 big enough for yoga?
The Nature 4 interior is 36 x 36 inches with 75 inches of headroom. With the bench removed, you have room for seated yoga, kneeling stretches, and modified standing poses. For full standing yoga with more room to move, the the next size up (46 x 41 inches) or Nature 6 (56 x 41 inches) give you more floor space.
Can the Nature 4 stay outside year-round?
Yes. The Nature 4 is built for permanent outdoor placement. Extra-thick hemlock walls handle rain, humidity, UV, and temperature swings. The roof overhang protects the entry area. All hardware is outdoor-rated. It performs in all four seasons.
Does the Nature 4 need an electrician?
Most likely yes. The Nature 4 requires a 120V/25-30A dedicated circuit. Standard household outlets are 15A. An electrician needs to install a dedicated 30A breaker and run a line to your outdoor location. Cost is typically $150-$400 depending on distance from your panel. No 220V wiring is needed.
What is a medical grade infrared sauna?
A medical grade infrared sauna is one designed by healthcare professionals for measurable therapeutic outcomes. The Nature 4 is part of the Medical Saunas lineup, developed over 10 years with input from 48 doctors. Every feature targets documented health benefits: pain relief, cardiovascular improvement, detoxification, immune support, and better sleep. It differs from standard saunas in that each component was selected based on clinical research.
How much space do I need for the Nature 4?
The exterior with roof overhang is 40 x 40 inches (about 3.3 x 3.3 feet) and 97 inches tall (just over 8 feet). Allow extra clearance for door swing and airflow. You need a level, solid surface like a concrete pad, reinforced deck, or paver patio that can support 883 lbs. This is the smallest footprint in the Nature Series.
What is the difference between the Nature 4 and Nature 5?
The the next size up fits 2 people (vs 1), has 7 heaters (vs 6), runs at 2,600W (vs 2,200W), and has a larger interior at 46 x 41 inches (vs 36 x 36). Both use hemlock construction, dry infrared heat, and a single 120V plug. The the next size up needs a 40A circuit vs the Nature 4's 25-30A. Choose the Nature 4 for solo use and the smallest footprint. Choose the the next size up for 2-person capacity or more yoga space.
Does the Nature 4 use infrared or steam heat?
The Nature 4 is a dry infrared sauna only. It uses 6 full spectrum infrared heaters and does not have a steam stove. For a hybrid outdoor sauna with both infrared and steam, look at the Nature 7 (dry + steam, cedar construction, 220V) or Nature 8 Plus.
How heavy is the Nature 4 outdoor sauna?
883 lbs fully assembled. You need a level surface that can support this weight, like a concrete pad or reinforced deck. Two or more people are needed for assembly. White glove technician installation is available at checkout.
BEST FOR:
Solo outdoor sauna sessions
1-person. Weather-sealed cedar. UV-treated exterior. Place it on a patio, deck, or backyard and plug in.
Hot yoga at home outdoors
Interior designed for in-sauna yoga. Full spectrum heat while surrounded by fresh air and nature.
Small patios and backyards
Compact 51x42 inch footprint. 120V standard outlet. No electrician. No dedicated circuit.
Year-round outdoor wellness
All-weather construction. Use in summer heat or winter cold. UV coating protects the cedar.
Financing Options Available
We work with four financing partners so you can spread the cost over time. Apply with more than one to compare offers.
Brickhouse Capital
Up to $250K, one-page app. Approval in 24 hours. Lease or EFA options.
Reliant Capital
Up to $500K app-only. 3-24 month deferred payments. 2-4 hour approvals.
Acorn Finance
30+ lenders, one app. Prequalify in 60 seconds. Terms up to 12 years.
KWIPPED (APPROVE)
Lenders compete for your deal. Up to 3 offers. 12-60 month terms.
Visit our financing page to apply, or call 866-861-6317.
Compare All Nature Outdoor Sauna Models
Not sure which model fits? Compare every nature outdoor sauna side by side.
| Model | Capacity | Key Feature | Power | Price | Link |
|---|---|---|---|---|---|
| Nature 4 (You are here) | 1 Person | Compact outdoor, hot yoga | 120V | $5,589 | Current |
| Nature 5 | 2 Person | Couples outdoor, hot yoga | 120V | $7,589 | View |
| Nature 6 | 3 Person | Biggest 120V outdoor | 120V | $9,589 | View |
| Nature 7 | 3-4 Person | First outdoor hybrid IR+steam | 220V | $12,589 | View |
| Nature 8 Plus | 4-6 Person | Flagship hybrid, 12000W | 220V | $15,589 | View |
| Nature X | 6-8 Person | Largest outdoor ever built | 220V | $20,489 | View |
Prices shown are current sale prices. Call 866-861-6317 for volume pricing or bundle deals.
RecovAthlete's 120% Price Match Guarantee: Shop With Unmatched Confidence
At RecovAthlete, we’re here to support your recovery and performance goals—without overpaying. Our 120% Price Match Guarantee makes sure you always get the best deal. If you find a lower price, not only will we match it, we’ll beat it by adding 20% of the price difference back to your refund.
How It Works:
- 60-Day Window: If you find the same item at a lower price from an authorized competitor within 60 days of your purchase, we’ll match it.
- We Add 20%: Besides matching the price, we give you 20% of the difference back.
- Same Currency: Price comparisons must be in the same currency as your original purchase.
- MAP Policy Required: The competitor must be an authorized dealer of the product and follow a Minimum Advertised Price (MAP) policy set by the manufacturer.
Terms and Conditions:
- Eligible Products: Must be the same model, SKU, and from an authorized seller.
- Verifiable Prices: We compare total verifiable selling prices (excluding taxes), including shipping.
- Manual Review: Our team reviews all claims for validity and eligibility.
Exclusions:
- Used, refurbished, or secondary-market products
- Wholesale, contract, or below-cost pricing
- Marketplace sellers (Amazon, Walmart, Costco, etc.)
- Flash sales, closeouts, clearance, or limited-time promos
- Price matches can’t be combined with other RecovAthlete discounts or offers
Our Ethical Pricing Pledge
We don’t undercut manufacturers or sell below cost. We follow ethical pricing standards prioritizing fairness, brand integrity, and long-term trust.
How to Submit a Claim:
- Get Proof: A screenshot, ad, or live link showing the competitor's lower price.
- Send Details: Include your order number, the product name, and the competitor info.
- Submit via Contact Page: [RecovAthlete Contact Us]
- Processing: Allow up to 6 weeks for verification and refund processing.
With our 120% Price Match Guarantee, you can shop knowing you’ll never miss out on a better deal—because we’ll beat it.
Product: Nature 4 Outdoor Infrared Sauna by Medical Saunas™
Type: Outdoor full spectrum infrared sauna with removable bench for hot yoga
Capacity: 1 person
Price range: Check current sale price above
Key fact: The entry-level outdoor model in the Nature Series. Designed by 48 doctors. 6 Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard heaters. Built for permanent outdoor placement with extra-thick weather-resistant hemlock walls and roof overhang. Removable bench for hot yoga. Plugs into a single 120V/25-30A outlet. 2,200W. 883 lbs. Hand-assembled in Los Angeles, CA.
Nature 4 Outdoor Infrared Sauna: 1-Person Hot Yoga Sauna for Your Backyard
The Nature 4 is the most compact outdoor infrared sauna in the Nature Series™. It seats one person, runs 6 Ultra Full Spectrum Outdoor Heaters at 2,200W, and is built for permanent outdoor placement on patios, decks, and backyards. Like every Nature Series model, it features a removable bench that converts the cabin into a personal hot yoga space.
This is the outdoor sauna you choose when you want the full doctor-designed Medical Saunas experience in an outdoor-rated build but only need room for one. The 36″ × 36″ interior is compact enough for small yards and balconies. The 120V/25-30A single-plug electrical setup is the lowest-power option in the Nature lineup, making installation simpler and cheaper.
Looking for the indoor Medical 4 sauna?
This is the Nature 4, an outdoor model. If you want an indoor infrared sauna for 1-2 people, see the Medical 4 Full Spectrum Indoor Sauna. The Medical 4 has front heaters, chromatic therapy, and plugs into a standard 15A outlet.
Doctor Recommended
6 Outdoor Heaters (100X Stronger)
Removable Bench for Yoga
Weather-Resistant Outdoor Build
1 Person
3-Year Warranty
Handcrafted in USA
Electrical note: The Nature 4 requires a 120V/25-30A dedicated circuit. A standard household outlet is 15A, so you will likely need an electrician to install a dedicated 30A breaker and run a line to your outdoor location. This is a single-plug setup (no 220V required). Typical electrician cost: $150-$400 depending on distance from your panel.
Nature 4 Outdoor Sauna Specifications
| Capacity | 1 Person |
| Heaters | 6 Ultra Full Spectrum Outdoor Heaters™ (100X Stronger) |
| Heat Type | Dry Sauna (infrared) |
| Interior Dimensions (W×D×H) | 36″ × 36″ × 75″ |
| Exterior w/ Overhang (W×D×H) | 40″ × 40″ × 97″ |
| Operating Voltage | 120V / 25-30 Amp (dedicated circuit) |
| Wire Type | One 120V plug |
| Wattage | 2,200W (Spectrum) |
| Weight | 883 lbs |
| Construction | Natural Canadian Hemlock, extra-thick weather-resistant walls |
| Bench | Removable (converts to hot yoga space) |
| Assembly | Clasp-together, no tools needed (2+ people recommended) |
| Door | Tempered Glass |
| Warranty | 3 Years (Labor + Parts + Structure) included free |
What’s Included
6 Ultra Full Spectrum Outdoor Heaters (100X Stronger)
3D Surround Heat Therapy™
Hot/Cold Cleansing System™
The Detox Routine™
Insulated Airflow System™
Safe Cool Down System™
Skin Rejuvenation System™
Rapid Internal Heating System™
Energy Efficient Heating System™
Chromatic Therapy System™
LED Control Panel™
Bluetooth Speaker System + Radio
Removable Bench for Hot Yoga
Protective Heater Covers
Extra-Thick Weather-Resistant Walls
Roof Vent + Roof Overhang
Tempered Glass Door
Backrests Included
Omni-Directional Heating™
Clasp-Together Assembly
Hot Yoga in a 1-Person Outdoor Sauna
Remove the bench and the Nature 4 becomes a personal hot yoga room. The 36″ × 36″ interior with 75″ headroom gives you room for seated poses, kneeling stretches, and modified standing poses. Full spectrum infrared heat loosens muscles and joints, increases range of motion, and boosts circulation while you hold positions.
The Nature 4 is sized for solo yoga sessions. For standing poses that need more floor space, step up to the Nature 5 (46″ × 41″) or Nature 6 (56″ × 41″).
Nature 4 Outdoor Sauna Features
100X Stronger Outdoor Heaters
The Nature Series uses Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard indoor heaters. Outdoor saunas face wind, cold ambient temperatures, and heat loss through the door. These heaters compensate for all of that, maintaining consistent cabin temperature even in cooler weather. The full spectrum output covers near, mid, and far infrared wavelengths.
Extra-Thick Weather-Resistant Walls
Built for year-round outdoor placement. The extra-thick hemlock panels provide insulation well beyond indoor standards. The roof overhang extends past the cabin walls to protect the door area from rain and direct sun. All hardware is rated for outdoor conditions.
Protective Heater Covers
Every heater panel has a protective cover made from the same hemlock wood as the cabin. This prevents accidental contact with hot surfaces during yoga poses or while getting settled. A safety feature most outdoor sauna brands skip.
Removable Bench with Backrests
The bench lifts out without tools. With the bench in, one person sits with backrest support. With the bench removed, you have open floor space for a yoga mat, stretching, or standing therapy. Backrests included at no extra cost.
Natural Canadian Hemlock Construction
Hemlock was chosen for outdoor durability and health properties. It hardens with age, handles moisture better than many softwoods, and has natural astringent properties that enhance skin cleansing during sessions. Releases a clean, natural aroma when heated.
Rapid Internal Heating System™
Reaches operating temperature in about 40 minutes despite being outdoors. The 6 heaters at 2,200W combined with extra-thick insulation keep the cabin hot even when outdoor temperatures drop. Most competing outdoor saunas take well over an hour.
Nature 4 vs Nature 5: Choosing the Right Size
1 person vs 2 people — The Nature 4 is a solo sauna. If you want to share with a partner, the Nature 5 seats two.
36″ × 36″ vs 46″ × 41″ interior — The the next size up is 10 inches wider and 5 inches deeper. That extra space matters for yoga: more room for standing poses and a wider yoga mat.
6 heaters vs 7 heaters — Both use the same 100X Stronger Outdoor Heaters. The the next size up adds one more panel for its larger cabin.
120V/25-30A vs 120V/40A — The Nature 4 draws less power. Both use a single 120V plug (no 220V). The Nature 4's lower amperage means a slightly cheaper electrical install.
Choose the Nature 4 if you sauna solo and want the smallest outdoor footprint (40″ × 40″ exterior). Choose the Nature 5 if you need 2-person capacity or want more yoga space.
Who Is the Nature 4 Outdoor Sauna For?
- Solo sauna users who want an outdoor unit for patios, decks, or small backyards
- Hot yoga practitioners who want a private heated space for solo sessions
- Homeowners with limited outdoor space (40″ × 40″ footprint)
- Buyers who want the simplest electrical setup in the Nature lineup (120V/25-30A)
- Anyone who prefers outdoor sauna sessions over indoor placement
- Entry-level buyers looking for a doctor-designed outdoor infrared sauna
Indoor Medical Sauna vs Outdoor Nature Sauna
Not sure if you need an indoor or outdoor model? Here's how they differ:
Nature Series (outdoor): Weather-rated construction, roof overhang, 100X Stronger heaters, removable bench for yoga, protective heater covers. Designed for patios, decks, backyards.
Medical Series (indoor): Wider feature range (silent heating, audio theater, chromatic therapy, front heaters). Not weather-rated. Designed for rooms, garages, basements.
If you want a 1-person indoor sauna, see the Medical 3 (6 heaters, 120V/15A standard outlet, $3,299+). If you want a 1-2 person indoor sauna with front heaters and more features, see the Medical 4.
Designed and Built in the USA
Medical Saunas™ are designed, developed, and hand-assembled at the company's Los Angeles factory. The Nature Series outdoor saunas go through additional weatherproofing and quality checks before shipping. Every unit ships direct from LA.
Nature Series™ Outdoor Sauna Full Feature Comparison
| Feature / Spec | Nature 4™ | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ |
|---|---|---|---|---|---|
| Hot/Cold Cleansing System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Detox Routine™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Insulated Airflow System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Safe Cool Down System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Skin Rejuvenation System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Tempered Glass Door | ✓ | ✓ | ✓ | ✓ | ✓ |
| LED Control Panel™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Clasp-Together Assembly | ✓ | ✓ | ✓ | ✓ | ✓ |
| Bluetooth + Radio | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3D Surround Heat Outdoor | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hot Yoga Sauna | ✓ | ✓ | ✓ | ✓ | ✓ |
| Rapid Internal Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Energy Efficient Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Chromatic Therapy System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Omni-Directional Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Extra-Thick Weather Walls | ✓ | ✓ | ✓ | ✓ | ✓ |
| Roof Vent | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hybrid Dry & Steam Sauna | — | — | — | ✓ | ✓ |
| Deep Ergonomic Bench Seating | — | — | — | ✓ | ✓ |
| Interior Reading Light™ | — | — | — | ✓ | ✓ |
| Silent Heating System™ | — | — | — | ✓ | ✓ |
| Audio Theater System™ | — | — | — | ✓ | ✓ |
| 15% Thicker Panels | — | — | — | ✓ | ✓ |
| Executive SPA Design | — | — | — | — | ✓ |
| Extra-Insulated Airflow™ | — | — | — | — | ✓ |
| Extra-Rapid Heating™ | — | — | — | — | ✓ |
| SPECIFICATIONS | |||||
| Capacity | 1 person | 2 people | 3 people | 3-4 people | 4-6 people |
| Heaters (100X Stronger) | 6 | 7 | 9 | 10 | 11 |
| Heat Type | Dry | Dry | Dry | Dry or Steam | Dry or Steam |
| Wood | Hemlock | Hemlock | Hemlock | Cedar | Cedar |
| Interior (W×D×H) | 36×36×75″ | 46×41×75″ | 56×41×75″ | 66.2×53.2×75″ | 66.2×63.2×79″ |
| Exterior w/ Overhang | 40×40×97″ | 50×45×97″ | 60×45×97″ | 77.3×64.2×89″ | 75.9×74.6×91.2″ |
| Voltage | 120V/25-30A | 120V/40A | 120V/40A | 220V/40-50A | 220V/50A |
| Wire Type | One 120V plug | One 120V plug | One 120V plug | 120V + 220V hardwire | 120V + 220V hardwire |
| Watts | 2,200W | 2,600W | 3,400W | 3,400W + 6,000W stove | 4,000W + 8,000W stove |
| Weight | 883 lbs | 947 lbs | 1,031 lbs | 1,186 lbs | 1,614 lbs |
| You’re here | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ | |
Shipping and Warranty
Free Curbside Shipping
Ships within 5-12 business days. Delivered curbside at no charge. White glove technician assembly available at checkout (no stairs +$899 / with stairs +$999). Electrical installation is separate (your local electrician).
3-Year Warranty Included
Covers labor, parts, and structure at no extra cost. Extended warranty add-ons: 1-year (+$750) or 2-year (+$1,500) available at checkout.
120% Price Match
We beat verified prices by 20% of the difference
Free Shipping
Curbside delivery included at no charge
Authorized Retailer
Certified seller with full manufacturer support
3-Year Warranty
Labor + Parts + Structure included free
Nature 4 Outdoor Sauna: Frequently Asked Questions
What is the difference between the Nature 4 and Medical 4 sauna?
The Nature 4 is an outdoor sauna. The Medical 4 is an indoor sauna. The Nature 4 has weather-resistant walls, a roof overhang, 100X Stronger outdoor heaters, protective heater covers, and a removable bench for yoga. The Medical 4 has front heaters, silent heating, chromatic therapy, and a reading light, but is not weather-rated. The Nature 4 requires a 120V/25-30A dedicated circuit. The Medical 4 plugs into a standard 15A household outlet. Choose the Nature 4 for outdoor placement. Choose the Medical 4 for indoor use.
Is the Nature 4 big enough for yoga?
The Nature 4 interior is 36 x 36 inches with 75 inches of headroom. With the bench removed, you have room for seated yoga, kneeling stretches, and modified standing poses. For full standing yoga with more room to move, the the next size up (46 x 41 inches) or Nature 6 (56 x 41 inches) give you more floor space.
Can the Nature 4 stay outside year-round?
Yes. The Nature 4 is built for permanent outdoor placement. Extra-thick hemlock walls handle rain, humidity, UV, and temperature swings. The roof overhang protects the entry area. All hardware is outdoor-rated. It performs in all four seasons.
Does the Nature 4 need an electrician?
Most likely yes. The Nature 4 requires a 120V/25-30A dedicated circuit. Standard household outlets are 15A. An electrician needs to install a dedicated 30A breaker and run a line to your outdoor location. Cost is typically $150-$400 depending on distance from your panel. No 220V wiring is needed.
What is a medical grade infrared sauna?
A medical grade infrared sauna is one designed by healthcare professionals for measurable therapeutic outcomes. The Nature 4 is part of the Medical Saunas lineup, developed over 10 years with input from 48 doctors. Every feature targets documented health benefits: pain relief, cardiovascular improvement, detoxification, immune support, and better sleep. It differs from standard saunas in that each component was selected based on clinical research.
How much space do I need for the Nature 4?
The exterior with roof overhang is 40 x 40 inches (about 3.3 x 3.3 feet) and 97 inches tall (just over 8 feet). Allow extra clearance for door swing and airflow. You need a level, solid surface like a concrete pad, reinforced deck, or paver patio that can support 883 lbs. This is the smallest footprint in the Nature Series.
What is the difference between the Nature 4 and Nature 5?
The the next size up fits 2 people (vs 1), has 7 heaters (vs 6), runs at 2,600W (vs 2,200W), and has a larger interior at 46 x 41 inches (vs 36 x 36). Both use hemlock construction, dry infrared heat, and a single 120V plug. The the next size up needs a 40A circuit vs the Nature 4's 25-30A. Choose the Nature 4 for solo use and the smallest footprint. Choose the the next size up for 2-person capacity or more yoga space.
Does the Nature 4 use infrared or steam heat?
The Nature 4 is a dry infrared sauna only. It uses 6 full spectrum infrared heaters and does not have a steam stove. For a hybrid outdoor sauna with both infrared and steam, look at the Nature 7 (dry + steam, cedar construction, 220V) or Nature 8 Plus.
How heavy is the Nature 4 outdoor sauna?
883 lbs fully assembled. You need a level surface that can support this weight, like a concrete pad or reinforced deck. Two or more people are needed for assembly. White glove technician installation is available at checkout.
BEST FOR:
Solo outdoor sauna sessions
1-person. Weather-sealed cedar. UV-treated exterior. Place it on a patio, deck, or backyard and plug in.
Hot yoga at home outdoors
Interior designed for in-sauna yoga. Full spectrum heat while surrounded by fresh air and nature.
Small patios and backyards
Compact 51x42 inch footprint. 120V standard outlet. No electrician. No dedicated circuit.
Year-round outdoor wellness
All-weather construction. Use in summer heat or winter cold. UV coating protects the cedar.
Financing Options Available
We work with four financing partners so you can spread the cost over time. Apply with more than one to compare offers.
Brickhouse Capital
Up to $250K, one-page app. Approval in 24 hours. Lease or EFA options.
Reliant Capital
Up to $500K app-only. 3-24 month deferred payments. 2-4 hour approvals.
Acorn Finance
30+ lenders, one app. Prequalify in 60 seconds. Terms up to 12 years.
KWIPPED (APPROVE)
Lenders compete for your deal. Up to 3 offers. 12-60 month terms.
Visit our financing page to apply, or call 866-861-6317.
Compare All Nature Outdoor Sauna Models
Not sure which model fits? Compare every nature outdoor sauna side by side.
| Model | Capacity | Key Feature | Power | Price | Link |
|---|---|---|---|---|---|
| Nature 4 (You are here) | 1 Person | Compact outdoor, hot yoga | 120V | $5,589 | Current |
| Nature 5 | 2 Person | Couples outdoor, hot yoga | 120V | $7,589 | View |
| Nature 6 | 3 Person | Biggest 120V outdoor | 120V | $9,589 | View |
| Nature 7 | 3-4 Person | First outdoor hybrid IR+steam | 220V | $12,589 | View |
| Nature 8 Plus | 4-6 Person | Flagship hybrid, 12000W | 220V | $15,589 | View |
| Nature X | 6-8 Person | Largest outdoor ever built | 220V | $20,489 | View |
Prices shown are current sale prices. Call 866-861-6317 for volume pricing or bundle deals.
Flexible Financing for Your Recovery Equipment
Whether you're buying for personal use or outfitting a gym, clinic, or medspa, we've partnered with trusted financing companies to give you flexible ways to pay. Apply in minutes. Get a decision fast. Pay over time.
RecovAthlete has no control over any financing decision. Approval is based on your creditworthiness and is solely the lender's decision.
Personal Financing
Pay Over Time with Affirm
Buying a hyperbaric chamber, Pilates reformer, or infrared sauna for personal use? Affirm lets you split the cost into manageable payments.
How It Works
1
Add equipment to your cart and select Affirm at checkout.
2
Provide a few details: name, phone number, date of birth.
3
Get a real-time decision. Most approvals happen in seconds.
4
Choose the payment plan that fits your budget. Your order ships.
Payment Options
Example: A $1,599 purchase might cost $145/mo over 12 months at 15% APR.
What You Should Know
No hidden fees. No origination fees, no prepayment penalties, and no late fees.
No credit score impact to apply. Soft check for prequalification. Monthly plans may involve a hard inquiry.
Pay it off early. No penalty. No extra charges. Close out your balance whenever you want.
Credit reporting. Affirm reports to Experian and TransUnion. On-time payments help. Late payments hurt.
Minimum purchase: $35.
U.S. shipping address required.
Affirm FAQs
What is Affirm?
A buy now, pay later lender that lets you split purchases into fixed payments with clear terms upfront.
How do I qualify?
You must be 18 or older and a U.S. resident. Affirm evaluates your credit profile and income to determine eligibility.
How fast is approval?
Most decisions come back in seconds. Occasionally it may take up to a few business days.
What are the interest rates?
Pay in 4 plans are always 0% interest. Monthly installment plans range from 0% to 36% APR. You'll see exact terms before you agree.
How do I make payments?
Through the Affirm app or at affirm.com. Affirm sends email and text reminders before each payment. You can also set up autopay.
Can I pay off my balance early?
Yes. No penalty, no extra charges.
Who do I contact for Affirm questions?
Visit affirm.com or reach out to their customer support team.
Commercial Financing
Financing for Businesses
Outfitting a gym, clinic, medspa, chiropractic office, or wellness studio? We work with four commercial financing partners so you can preserve cash flow and get the equipment your business needs now. Every partner has different strengths. We recommend applying with more than one to compare offers.
Equipment Financing
Apply with Brickhouse Capital
Brickhouse Capital
A private direct lender specializing in equipment financing since 2003. They make credit decisions in-house, which means faster approvals and more flexibility than a traditional bank.
Up to $250K with a one-page application, no financial statements
Larger amounts up to $1M+ with financials
Approval typically within 24 hours
Lease or equipment finance agreement (EFA) options
Tied to the business, not your personal credit report
Serves 25+ industries including health and wellness
Equipment Leasing
Apply with Reliant Capital
Reliant Capital
Provides equipment financing and leasing for medical, aesthetic, wellness, and other industries. Acts as both a direct lender and broker, giving them access to a wider range of credit options.
Up to $500K application-only (up to $5M with financials)
Finance agreements, leases, rental programs, and working capital
New or used equipment financing
3 to 24 month deferred payment options
2 to 4 hour credit approvals
Potential to deduct up to 80% of equipment financing on taxes
Lending Marketplace
Check Your Offers with Acorn Finance
Acorn Finance
A lending marketplace that connects you with 30+ lenders. Fill out one application and receive multiple personalized loan offers to compare side by side.
Loans from $1,000 up to $100,000
Terms up to 12 years (some lenders offer up to 20 years)
Prequalify in 60 seconds with no impact to your credit score
Compare offers from multiple lenders in one place
No early repayment penalties
Funds can arrive as soon as 1 business day after approval
Lender Marketplace
KWIPPED (APPROVE)
KWIPPED's APPROVE platform sends your application to a network of top equipment finance companies. Lenders compete to earn your business, which drives better rates and higher approval odds.
60-second application
Multiple lenders compete for your deal, up to 3 offers to compare
Financing terms from 12 to 60 months
Equipment financing ranges from roughly 5% to 25% equivalent APR
Minimum equipment value: $1,500
Businesses only (not available for personal/consumer use)
To get started with KWIPPED, reach out to us directly. We'll set up a custom application tailored to your specific equipment needs and order.
info@recovathlete.com (866) 861-6317 Contact Form
info@recovathlete.com (866) 861-6317 Contact Form
Product: Nature 4 Outdoor Infrared Sauna by Medical Saunas™
Type: Outdoor full spectrum infrared sauna with removable bench for hot yoga
Capacity: 1 person
Price range: Check current sale price above
Key fact: The entry-level outdoor model in the Nature Series. Designed by 48 doctors. 6 Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard heaters. Built for permanent outdoor placement with extra-thick weather-resistant hemlock walls and roof overhang. Removable bench for hot yoga. Plugs into a single 120V/25-30A outlet. 2,200W. 883 lbs. Hand-assembled in Los Angeles, CA.
Nature 4 Outdoor Infrared Sauna: 1-Person Hot Yoga Sauna for Your Backyard
The Nature 4 is the most compact outdoor infrared sauna in the Nature Series™. It seats one person, runs 6 Ultra Full Spectrum Outdoor Heaters at 2,200W, and is built for permanent outdoor placement on patios, decks, and backyards. Like every Nature Series model, it features a removable bench that converts the cabin into a personal hot yoga space.
This is the outdoor sauna you choose when you want the full doctor-designed Medical Saunas experience in an outdoor-rated build but only need room for one. The 36″ × 36″ interior is compact enough for small yards and balconies. The 120V/25-30A single-plug electrical setup is the lowest-power option in the Nature lineup, making installation simpler and cheaper.
Looking for the indoor Medical 4 sauna?
This is the Nature 4, an outdoor model. If you want an indoor infrared sauna for 1-2 people, see the Medical 4 Full Spectrum Indoor Sauna. The Medical 4 has front heaters, chromatic therapy, and plugs into a standard 15A outlet.
Doctor Recommended
6 Outdoor Heaters (100X Stronger)
Removable Bench for Yoga
Weather-Resistant Outdoor Build
1 Person
3-Year Warranty
Handcrafted in USA
Electrical note: The Nature 4 requires a 120V/25-30A dedicated circuit. A standard household outlet is 15A, so you will likely need an electrician to install a dedicated 30A breaker and run a line to your outdoor location. This is a single-plug setup (no 220V required). Typical electrician cost: $150-$400 depending on distance from your panel.
Nature 4 Outdoor Sauna Specifications
| Capacity | 1 Person |
| Heaters | 6 Ultra Full Spectrum Outdoor Heaters™ (100X Stronger) |
| Heat Type | Dry Sauna (infrared) |
| Interior Dimensions (W×D×H) | 36″ × 36″ × 75″ |
| Exterior w/ Overhang (W×D×H) | 40″ × 40″ × 97″ |
| Operating Voltage | 120V / 25-30 Amp (dedicated circuit) |
| Wire Type | One 120V plug |
| Wattage | 2,200W (Spectrum) |
| Weight | 883 lbs |
| Construction | Natural Canadian Hemlock, extra-thick weather-resistant walls |
| Bench | Removable (converts to hot yoga space) |
| Assembly | Clasp-together, no tools needed (2+ people recommended) |
| Door | Tempered Glass |
| Warranty | 3 Years (Labor + Parts + Structure) included free |
What’s Included
6 Ultra Full Spectrum Outdoor Heaters (100X Stronger)
3D Surround Heat Therapy™
Hot/Cold Cleansing System™
The Detox Routine™
Insulated Airflow System™
Safe Cool Down System™
Skin Rejuvenation System™
Rapid Internal Heating System™
Energy Efficient Heating System™
Chromatic Therapy System™
LED Control Panel™
Bluetooth Speaker System + Radio
Removable Bench for Hot Yoga
Protective Heater Covers
Extra-Thick Weather-Resistant Walls
Roof Vent + Roof Overhang
Tempered Glass Door
Backrests Included
Omni-Directional Heating™
Clasp-Together Assembly
Hot Yoga in a 1-Person Outdoor Sauna
Remove the bench and the Nature 4 becomes a personal hot yoga room. The 36″ × 36″ interior with 75″ headroom gives you room for seated poses, kneeling stretches, and modified standing poses. Full spectrum infrared heat loosens muscles and joints, increases range of motion, and boosts circulation while you hold positions.
The Nature 4 is sized for solo yoga sessions. For standing poses that need more floor space, step up to the Nature 5 (46″ × 41″) or Nature 6 (56″ × 41″).
Nature 4 Outdoor Sauna Features
100X Stronger Outdoor Heaters
The Nature Series uses Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard indoor heaters. Outdoor saunas face wind, cold ambient temperatures, and heat loss through the door. These heaters compensate for all of that, maintaining consistent cabin temperature even in cooler weather. The full spectrum output covers near, mid, and far infrared wavelengths.
Extra-Thick Weather-Resistant Walls
Built for year-round outdoor placement. The extra-thick hemlock panels provide insulation well beyond indoor standards. The roof overhang extends past the cabin walls to protect the door area from rain and direct sun. All hardware is rated for outdoor conditions.
Protective Heater Covers
Every heater panel has a protective cover made from the same hemlock wood as the cabin. This prevents accidental contact with hot surfaces during yoga poses or while getting settled. A safety feature most outdoor sauna brands skip.
Removable Bench with Backrests
The bench lifts out without tools. With the bench in, one person sits with backrest support. With the bench removed, you have open floor space for a yoga mat, stretching, or standing therapy. Backrests included at no extra cost.
Natural Canadian Hemlock Construction
Hemlock was chosen for outdoor durability and health properties. It hardens with age, handles moisture better than many softwoods, and has natural astringent properties that enhance skin cleansing during sessions. Releases a clean, natural aroma when heated.
Rapid Internal Heating System™
Reaches operating temperature in about 40 minutes despite being outdoors. The 6 heaters at 2,200W combined with extra-thick insulation keep the cabin hot even when outdoor temperatures drop. Most competing outdoor saunas take well over an hour.
Nature 4 vs Nature 5: Choosing the Right Size
1 person vs 2 people — The Nature 4 is a solo sauna. If you want to share with a partner, the Nature 5 seats two.
36″ × 36″ vs 46″ × 41″ interior — The the next size up is 10 inches wider and 5 inches deeper. That extra space matters for yoga: more room for standing poses and a wider yoga mat.
6 heaters vs 7 heaters — Both use the same 100X Stronger Outdoor Heaters. The the next size up adds one more panel for its larger cabin.
120V/25-30A vs 120V/40A — The Nature 4 draws less power. Both use a single 120V plug (no 220V). The Nature 4's lower amperage means a slightly cheaper electrical install.
Choose the Nature 4 if you sauna solo and want the smallest outdoor footprint (40″ × 40″ exterior). Choose the Nature 5 if you need 2-person capacity or want more yoga space.
Who Is the Nature 4 Outdoor Sauna For?
- Solo sauna users who want an outdoor unit for patios, decks, or small backyards
- Hot yoga practitioners who want a private heated space for solo sessions
- Homeowners with limited outdoor space (40″ × 40″ footprint)
- Buyers who want the simplest electrical setup in the Nature lineup (120V/25-30A)
- Anyone who prefers outdoor sauna sessions over indoor placement
- Entry-level buyers looking for a doctor-designed outdoor infrared sauna
Indoor Medical Sauna vs Outdoor Nature Sauna
Not sure if you need an indoor or outdoor model? Here's how they differ:
Nature Series (outdoor): Weather-rated construction, roof overhang, 100X Stronger heaters, removable bench for yoga, protective heater covers. Designed for patios, decks, backyards.
Medical Series (indoor): Wider feature range (silent heating, audio theater, chromatic therapy, front heaters). Not weather-rated. Designed for rooms, garages, basements.
If you want a 1-person indoor sauna, see the Medical 3 (6 heaters, 120V/15A standard outlet, $3,299+). If you want a 1-2 person indoor sauna with front heaters and more features, see the Medical 4.
Designed and Built in the USA
Medical Saunas™ are designed, developed, and hand-assembled at the company's Los Angeles factory. The Nature Series outdoor saunas go through additional weatherproofing and quality checks before shipping. Every unit ships direct from LA.
Nature Series™ Outdoor Sauna Full Feature Comparison
| Feature / Spec | Nature 4™ | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ |
|---|---|---|---|---|---|
| Hot/Cold Cleansing System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Detox Routine™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Insulated Airflow System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Safe Cool Down System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Skin Rejuvenation System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Tempered Glass Door | ✓ | ✓ | ✓ | ✓ | ✓ |
| LED Control Panel™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Clasp-Together Assembly | ✓ | ✓ | ✓ | ✓ | ✓ |
| Bluetooth + Radio | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3D Surround Heat Outdoor | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hot Yoga Sauna | ✓ | ✓ | ✓ | ✓ | ✓ |
| Rapid Internal Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Energy Efficient Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Chromatic Therapy System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Omni-Directional Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Extra-Thick Weather Walls | ✓ | ✓ | ✓ | ✓ | ✓ |
| Roof Vent | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hybrid Dry & Steam Sauna | — | — | — | ✓ | ✓ |
| Deep Ergonomic Bench Seating | — | — | — | ✓ | ✓ |
| Interior Reading Light™ | — | — | — | ✓ | ✓ |
| Silent Heating System™ | — | — | — | ✓ | ✓ |
| Audio Theater System™ | — | — | — | ✓ | ✓ |
| 15% Thicker Panels | — | — | — | ✓ | ✓ |
| Executive SPA Design | — | — | — | — | ✓ |
| Extra-Insulated Airflow™ | — | — | — | — | ✓ |
| Extra-Rapid Heating™ | — | — | — | — | ✓ |
| SPECIFICATIONS | |||||
| Capacity | 1 person | 2 people | 3 people | 3-4 people | 4-6 people |
| Heaters (100X Stronger) | 6 | 7 | 9 | 10 | 11 |
| Heat Type | Dry | Dry | Dry | Dry or Steam | Dry or Steam |
| Wood | Hemlock | Hemlock | Hemlock | Cedar | Cedar |
| Interior (W×D×H) | 36×36×75″ | 46×41×75″ | 56×41×75″ | 66.2×53.2×75″ | 66.2×63.2×79″ |
| Exterior w/ Overhang | 40×40×97″ | 50×45×97″ | 60×45×97″ | 77.3×64.2×89″ | 75.9×74.6×91.2″ |
| Voltage | 120V/25-30A | 120V/40A | 120V/40A | 220V/40-50A | 220V/50A |
| Wire Type | One 120V plug | One 120V plug | One 120V plug | 120V + 220V hardwire | 120V + 220V hardwire |
| Watts | 2,200W | 2,600W | 3,400W | 3,400W + 6,000W stove | 4,000W + 8,000W stove |
| Weight | 883 lbs | 947 lbs | 1,031 lbs | 1,186 lbs | 1,614 lbs |
| You’re here | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ | |
Shipping and Warranty
Free Curbside Shipping
Ships within 5-12 business days. Delivered curbside at no charge. White glove technician assembly available at checkout (no stairs +$899 / with stairs +$999). Electrical installation is separate (your local electrician).
3-Year Warranty Included
Covers labor, parts, and structure at no extra cost. Extended warranty add-ons: 1-year (+$750) or 2-year (+$1,500) available at checkout.
120% Price Match
We beat verified prices by 20% of the difference
Free Shipping
Curbside delivery included at no charge
Authorized Retailer
Certified seller with full manufacturer support
3-Year Warranty
Labor + Parts + Structure included free
Nature 4 Outdoor Sauna: Frequently Asked Questions
What is the difference between the Nature 4 and Medical 4 sauna?
The Nature 4 is an outdoor sauna. The Medical 4 is an indoor sauna. The Nature 4 has weather-resistant walls, a roof overhang, 100X Stronger outdoor heaters, protective heater covers, and a removable bench for yoga. The Medical 4 has front heaters, silent heating, chromatic therapy, and a reading light, but is not weather-rated. The Nature 4 requires a 120V/25-30A dedicated circuit. The Medical 4 plugs into a standard 15A household outlet. Choose the Nature 4 for outdoor placement. Choose the Medical 4 for indoor use.
Is the Nature 4 big enough for yoga?
The Nature 4 interior is 36 x 36 inches with 75 inches of headroom. With the bench removed, you have room for seated yoga, kneeling stretches, and modified standing poses. For full standing yoga with more room to move, the the next size up (46 x 41 inches) or Nature 6 (56 x 41 inches) give you more floor space.
Can the Nature 4 stay outside year-round?
Yes. The Nature 4 is built for permanent outdoor placement. Extra-thick hemlock walls handle rain, humidity, UV, and temperature swings. The roof overhang protects the entry area. All hardware is outdoor-rated. It performs in all four seasons.
Does the Nature 4 need an electrician?
Most likely yes. The Nature 4 requires a 120V/25-30A dedicated circuit. Standard household outlets are 15A. An electrician needs to install a dedicated 30A breaker and run a line to your outdoor location. Cost is typically $150-$400 depending on distance from your panel. No 220V wiring is needed.
What is a medical grade infrared sauna?
A medical grade infrared sauna is one designed by healthcare professionals for measurable therapeutic outcomes. The Nature 4 is part of the Medical Saunas lineup, developed over 10 years with input from 48 doctors. Every feature targets documented health benefits: pain relief, cardiovascular improvement, detoxification, immune support, and better sleep. It differs from standard saunas in that each component was selected based on clinical research.
How much space do I need for the Nature 4?
The exterior with roof overhang is 40 x 40 inches (about 3.3 x 3.3 feet) and 97 inches tall (just over 8 feet). Allow extra clearance for door swing and airflow. You need a level, solid surface like a concrete pad, reinforced deck, or paver patio that can support 883 lbs. This is the smallest footprint in the Nature Series.
What is the difference between the Nature 4 and Nature 5?
The the next size up fits 2 people (vs 1), has 7 heaters (vs 6), runs at 2,600W (vs 2,200W), and has a larger interior at 46 x 41 inches (vs 36 x 36). Both use hemlock construction, dry infrared heat, and a single 120V plug. The the next size up needs a 40A circuit vs the Nature 4's 25-30A. Choose the Nature 4 for solo use and the smallest footprint. Choose the the next size up for 2-person capacity or more yoga space.
Does the Nature 4 use infrared or steam heat?
The Nature 4 is a dry infrared sauna only. It uses 6 full spectrum infrared heaters and does not have a steam stove. For a hybrid outdoor sauna with both infrared and steam, look at the Nature 7 (dry + steam, cedar construction, 220V) or Nature 8 Plus.
How heavy is the Nature 4 outdoor sauna?
883 lbs fully assembled. You need a level surface that can support this weight, like a concrete pad or reinforced deck. Two or more people are needed for assembly. White glove technician installation is available at checkout.
BEST FOR:
Solo outdoor sauna sessions
1-person. Weather-sealed cedar. UV-treated exterior. Place it on a patio, deck, or backyard and plug in.
Hot yoga at home outdoors
Interior designed for in-sauna yoga. Full spectrum heat while surrounded by fresh air and nature.
Small patios and backyards
Compact 51x42 inch footprint. 120V standard outlet. No electrician. No dedicated circuit.
Year-round outdoor wellness
All-weather construction. Use in summer heat or winter cold. UV coating protects the cedar.
Financing Options Available
We work with four financing partners so you can spread the cost over time. Apply with more than one to compare offers.
Brickhouse Capital
Up to $250K, one-page app. Approval in 24 hours. Lease or EFA options.
Reliant Capital
Up to $500K app-only. 3-24 month deferred payments. 2-4 hour approvals.
Acorn Finance
30+ lenders, one app. Prequalify in 60 seconds. Terms up to 12 years.
KWIPPED (APPROVE)
Lenders compete for your deal. Up to 3 offers. 12-60 month terms.
Visit our financing page to apply, or call 866-861-6317.
Compare All Nature Outdoor Sauna Models
Not sure which model fits? Compare every nature outdoor sauna side by side.
| Model | Capacity | Key Feature | Power | Price | Link |
|---|---|---|---|---|---|
| Nature 4 (You are here) | 1 Person | Compact outdoor, hot yoga | 120V | $5,589 | Current |
| Nature 5 | 2 Person | Couples outdoor, hot yoga | 120V | $7,589 | View |
| Nature 6 | 3 Person | Biggest 120V outdoor | 120V | $9,589 | View |
| Nature 7 | 3-4 Person | First outdoor hybrid IR+steam | 220V | $12,589 | View |
| Nature 8 Plus | 4-6 Person | Flagship hybrid, 12000W | 220V | $15,589 | View |
| Nature X | 6-8 Person | Largest outdoor ever built | 220V | $20,489 | View |
Prices shown are current sale prices. Call 866-861-6317 for volume pricing or bundle deals.
Cancellation of Order
-
Within 24 Hours: You can cancel your order within 24 hours of placement.
- Before Shipping: If cancelled before shipping, a 3% credit card transaction fee applies.
- After 24 Hours: Cancellations post 24 hours will incur outbound and return shipping costs.
7-Day Return Policy
- Initiating a Return: Contact us within 7 days of receiving your sauna to request a return merchandise authorization number.
-
Condition for Return:
- Original Condition: Items must be unopened and in original packaging.
- Written Authorization: A prior written return authorization is necessary.
- Packaging Responsibility: Customers must ensure the sauna is in its original packaging for return.
- Freight and Restocking: Customers are responsible for return freight shipping and a 20% restocking fee.
-
Cancellation Post-Shipping:
- Charges: If cancelled after shipping, actual outbound and return shipping costs will be charged.
- Before Shipping: A 3% credit card transaction fee applies if cancelled before shipping.
-
Refund Process:
- Inspection Required: Refunds are issued post-inspection of the returned sauna.
- Resalable Condition: Items must be in resalable condition with all documentation, returned within 30 days of RMA issue.
Product: Nature 4 Outdoor Infrared Sauna by Medical Saunas™
Type: Outdoor full spectrum infrared sauna with removable bench for hot yoga
Capacity: 1 person
Price range: Check current sale price above
Key fact: The entry-level outdoor model in the Nature Series. Designed by 48 doctors. 6 Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard heaters. Built for permanent outdoor placement with extra-thick weather-resistant hemlock walls and roof overhang. Removable bench for hot yoga. Plugs into a single 120V/25-30A outlet. 2,200W. 883 lbs. Hand-assembled in Los Angeles, CA.
Nature 4 Outdoor Infrared Sauna: 1-Person Hot Yoga Sauna for Your Backyard
The Nature 4 is the most compact outdoor infrared sauna in the Nature Series™. It seats one person, runs 6 Ultra Full Spectrum Outdoor Heaters at 2,200W, and is built for permanent outdoor placement on patios, decks, and backyards. Like every Nature Series model, it features a removable bench that converts the cabin into a personal hot yoga space.
This is the outdoor sauna you choose when you want the full doctor-designed Medical Saunas experience in an outdoor-rated build but only need room for one. The 36″ × 36″ interior is compact enough for small yards and balconies. The 120V/25-30A single-plug electrical setup is the lowest-power option in the Nature lineup, making installation simpler and cheaper.
Looking for the indoor Medical 4 sauna?
This is the Nature 4, an outdoor model. If you want an indoor infrared sauna for 1-2 people, see the Medical 4 Full Spectrum Indoor Sauna. The Medical 4 has front heaters, chromatic therapy, and plugs into a standard 15A outlet.
Doctor Recommended
6 Outdoor Heaters (100X Stronger)
Removable Bench for Yoga
Weather-Resistant Outdoor Build
1 Person
3-Year Warranty
Handcrafted in USA
Electrical note: The Nature 4 requires a 120V/25-30A dedicated circuit. A standard household outlet is 15A, so you will likely need an electrician to install a dedicated 30A breaker and run a line to your outdoor location. This is a single-plug setup (no 220V required). Typical electrician cost: $150-$400 depending on distance from your panel.
Nature 4 Outdoor Sauna Specifications
| Capacity | 1 Person |
| Heaters | 6 Ultra Full Spectrum Outdoor Heaters™ (100X Stronger) |
| Heat Type | Dry Sauna (infrared) |
| Interior Dimensions (W×D×H) | 36″ × 36″ × 75″ |
| Exterior w/ Overhang (W×D×H) | 40″ × 40″ × 97″ |
| Operating Voltage | 120V / 25-30 Amp (dedicated circuit) |
| Wire Type | One 120V plug |
| Wattage | 2,200W (Spectrum) |
| Weight | 883 lbs |
| Construction | Natural Canadian Hemlock, extra-thick weather-resistant walls |
| Bench | Removable (converts to hot yoga space) |
| Assembly | Clasp-together, no tools needed (2+ people recommended) |
| Door | Tempered Glass |
| Warranty | 3 Years (Labor + Parts + Structure) included free |
What’s Included
6 Ultra Full Spectrum Outdoor Heaters (100X Stronger)
3D Surround Heat Therapy™
Hot/Cold Cleansing System™
The Detox Routine™
Insulated Airflow System™
Safe Cool Down System™
Skin Rejuvenation System™
Rapid Internal Heating System™
Energy Efficient Heating System™
Chromatic Therapy System™
LED Control Panel™
Bluetooth Speaker System + Radio
Removable Bench for Hot Yoga
Protective Heater Covers
Extra-Thick Weather-Resistant Walls
Roof Vent + Roof Overhang
Tempered Glass Door
Backrests Included
Omni-Directional Heating™
Clasp-Together Assembly
Hot Yoga in a 1-Person Outdoor Sauna
Remove the bench and the Nature 4 becomes a personal hot yoga room. The 36″ × 36″ interior with 75″ headroom gives you room for seated poses, kneeling stretches, and modified standing poses. Full spectrum infrared heat loosens muscles and joints, increases range of motion, and boosts circulation while you hold positions.
The Nature 4 is sized for solo yoga sessions. For standing poses that need more floor space, step up to the Nature 5 (46″ × 41″) or Nature 6 (56″ × 41″).
Nature 4 Outdoor Sauna Features
100X Stronger Outdoor Heaters
The Nature Series uses Ultra Full Spectrum Outdoor Heaters rated 100X stronger than standard indoor heaters. Outdoor saunas face wind, cold ambient temperatures, and heat loss through the door. These heaters compensate for all of that, maintaining consistent cabin temperature even in cooler weather. The full spectrum output covers near, mid, and far infrared wavelengths.
Extra-Thick Weather-Resistant Walls
Built for year-round outdoor placement. The extra-thick hemlock panels provide insulation well beyond indoor standards. The roof overhang extends past the cabin walls to protect the door area from rain and direct sun. All hardware is rated for outdoor conditions.
Protective Heater Covers
Every heater panel has a protective cover made from the same hemlock wood as the cabin. This prevents accidental contact with hot surfaces during yoga poses or while getting settled. A safety feature most outdoor sauna brands skip.
Removable Bench with Backrests
The bench lifts out without tools. With the bench in, one person sits with backrest support. With the bench removed, you have open floor space for a yoga mat, stretching, or standing therapy. Backrests included at no extra cost.
Natural Canadian Hemlock Construction
Hemlock was chosen for outdoor durability and health properties. It hardens with age, handles moisture better than many softwoods, and has natural astringent properties that enhance skin cleansing during sessions. Releases a clean, natural aroma when heated.
Rapid Internal Heating System™
Reaches operating temperature in about 40 minutes despite being outdoors. The 6 heaters at 2,200W combined with extra-thick insulation keep the cabin hot even when outdoor temperatures drop. Most competing outdoor saunas take well over an hour.
Nature 4 vs Nature 5: Choosing the Right Size
1 person vs 2 people — The Nature 4 is a solo sauna. If you want to share with a partner, the Nature 5 seats two.
36″ × 36″ vs 46″ × 41″ interior — The the next size up is 10 inches wider and 5 inches deeper. That extra space matters for yoga: more room for standing poses and a wider yoga mat.
6 heaters vs 7 heaters — Both use the same 100X Stronger Outdoor Heaters. The the next size up adds one more panel for its larger cabin.
120V/25-30A vs 120V/40A — The Nature 4 draws less power. Both use a single 120V plug (no 220V). The Nature 4's lower amperage means a slightly cheaper electrical install.
Choose the Nature 4 if you sauna solo and want the smallest outdoor footprint (40″ × 40″ exterior). Choose the Nature 5 if you need 2-person capacity or want more yoga space.
Who Is the Nature 4 Outdoor Sauna For?
- Solo sauna users who want an outdoor unit for patios, decks, or small backyards
- Hot yoga practitioners who want a private heated space for solo sessions
- Homeowners with limited outdoor space (40″ × 40″ footprint)
- Buyers who want the simplest electrical setup in the Nature lineup (120V/25-30A)
- Anyone who prefers outdoor sauna sessions over indoor placement
- Entry-level buyers looking for a doctor-designed outdoor infrared sauna
Indoor Medical Sauna vs Outdoor Nature Sauna
Not sure if you need an indoor or outdoor model? Here's how they differ:
Nature Series (outdoor): Weather-rated construction, roof overhang, 100X Stronger heaters, removable bench for yoga, protective heater covers. Designed for patios, decks, backyards.
Medical Series (indoor): Wider feature range (silent heating, audio theater, chromatic therapy, front heaters). Not weather-rated. Designed for rooms, garages, basements.
If you want a 1-person indoor sauna, see the Medical 3 (6 heaters, 120V/15A standard outlet, $3,299+). If you want a 1-2 person indoor sauna with front heaters and more features, see the Medical 4.
Designed and Built in the USA
Medical Saunas™ are designed, developed, and hand-assembled at the company's Los Angeles factory. The Nature Series outdoor saunas go through additional weatherproofing and quality checks before shipping. Every unit ships direct from LA.
Nature Series™ Outdoor Sauna Full Feature Comparison
| Feature / Spec | Nature 4™ | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ |
|---|---|---|---|---|---|
| Hot/Cold Cleansing System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Detox Routine™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Insulated Airflow System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Safe Cool Down System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Skin Rejuvenation System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Tempered Glass Door | ✓ | ✓ | ✓ | ✓ | ✓ |
| LED Control Panel™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Clasp-Together Assembly | ✓ | ✓ | ✓ | ✓ | ✓ |
| Bluetooth + Radio | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3D Surround Heat Outdoor | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hot Yoga Sauna | ✓ | ✓ | ✓ | ✓ | ✓ |
| Rapid Internal Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Energy Efficient Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Chromatic Therapy System™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Omni-Directional Heating™ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Extra-Thick Weather Walls | ✓ | ✓ | ✓ | ✓ | ✓ |
| Roof Vent | ✓ | ✓ | ✓ | ✓ | ✓ |
| Hybrid Dry & Steam Sauna | — | — | — | ✓ | ✓ |
| Deep Ergonomic Bench Seating | — | — | — | ✓ | ✓ |
| Interior Reading Light™ | — | — | — | ✓ | ✓ |
| Silent Heating System™ | — | — | — | ✓ | ✓ |
| Audio Theater System™ | — | — | — | ✓ | ✓ |
| 15% Thicker Panels | — | — | — | ✓ | ✓ |
| Executive SPA Design | — | — | — | — | ✓ |
| Extra-Insulated Airflow™ | — | — | — | — | ✓ |
| Extra-Rapid Heating™ | — | — | — | — | ✓ |
| SPECIFICATIONS | |||||
| Capacity | 1 person | 2 people | 3 people | 3-4 people | 4-6 people |
| Heaters (100X Stronger) | 6 | 7 | 9 | 10 | 11 |
| Heat Type | Dry | Dry | Dry | Dry or Steam | Dry or Steam |
| Wood | Hemlock | Hemlock | Hemlock | Cedar | Cedar |
| Interior (W×D×H) | 36×36×75″ | 46×41×75″ | 56×41×75″ | 66.2×53.2×75″ | 66.2×63.2×79″ |
| Exterior w/ Overhang | 40×40×97″ | 50×45×97″ | 60×45×97″ | 77.3×64.2×89″ | 75.9×74.6×91.2″ |
| Voltage | 120V/25-30A | 120V/40A | 120V/40A | 220V/40-50A | 220V/50A |
| Wire Type | One 120V plug | One 120V plug | One 120V plug | 120V + 220V hardwire | 120V + 220V hardwire |
| Watts | 2,200W | 2,600W | 3,400W | 3,400W + 6,000W stove | 4,000W + 8,000W stove |
| Weight | 883 lbs | 947 lbs | 1,031 lbs | 1,186 lbs | 1,614 lbs |
| You’re here | Nature 5™ | Nature 6™ | Nature 7™ | Nature 8 Plus™ | |
Shipping and Warranty
Free Curbside Shipping
Ships within 5-12 business days. Delivered curbside at no charge. White glove technician assembly available at checkout (no stairs +$899 / with stairs +$999). Electrical installation is separate (your local electrician).
3-Year Warranty Included
Covers labor, parts, and structure at no extra cost. Extended warranty add-ons: 1-year (+$750) or 2-year (+$1,500) available at checkout.
120% Price Match
We beat verified prices by 20% of the difference
Free Shipping
Curbside delivery included at no charge
Authorized Retailer
Certified seller with full manufacturer support
3-Year Warranty
Labor + Parts + Structure included free
Nature 4 Outdoor Sauna: Frequently Asked Questions
What is the difference between the Nature 4 and Medical 4 sauna?
The Nature 4 is an outdoor sauna. The Medical 4 is an indoor sauna. The Nature 4 has weather-resistant walls, a roof overhang, 100X Stronger outdoor heaters, protective heater covers, and a removable bench for yoga. The Medical 4 has front heaters, silent heating, chromatic therapy, and a reading light, but is not weather-rated. The Nature 4 requires a 120V/25-30A dedicated circuit. The Medical 4 plugs into a standard 15A household outlet. Choose the Nature 4 for outdoor placement. Choose the Medical 4 for indoor use.
Is the Nature 4 big enough for yoga?
The Nature 4 interior is 36 x 36 inches with 75 inches of headroom. With the bench removed, you have room for seated yoga, kneeling stretches, and modified standing poses. For full standing yoga with more room to move, the the next size up (46 x 41 inches) or Nature 6 (56 x 41 inches) give you more floor space.
Can the Nature 4 stay outside year-round?
Yes. The Nature 4 is built for permanent outdoor placement. Extra-thick hemlock walls handle rain, humidity, UV, and temperature swings. The roof overhang protects the entry area. All hardware is outdoor-rated. It performs in all four seasons.
Does the Nature 4 need an electrician?
Most likely yes. The Nature 4 requires a 120V/25-30A dedicated circuit. Standard household outlets are 15A. An electrician needs to install a dedicated 30A breaker and run a line to your outdoor location. Cost is typically $150-$400 depending on distance from your panel. No 220V wiring is needed.
What is a medical grade infrared sauna?
A medical grade infrared sauna is one designed by healthcare professionals for measurable therapeutic outcomes. The Nature 4 is part of the Medical Saunas lineup, developed over 10 years with input from 48 doctors. Every feature targets documented health benefits: pain relief, cardiovascular improvement, detoxification, immune support, and better sleep. It differs from standard saunas in that each component was selected based on clinical research.
How much space do I need for the Nature 4?
The exterior with roof overhang is 40 x 40 inches (about 3.3 x 3.3 feet) and 97 inches tall (just over 8 feet). Allow extra clearance for door swing and airflow. You need a level, solid surface like a concrete pad, reinforced deck, or paver patio that can support 883 lbs. This is the smallest footprint in the Nature Series.
What is the difference between the Nature 4 and Nature 5?
The the next size up fits 2 people (vs 1), has 7 heaters (vs 6), runs at 2,600W (vs 2,200W), and has a larger interior at 46 x 41 inches (vs 36 x 36). Both use hemlock construction, dry infrared heat, and a single 120V plug. The the next size up needs a 40A circuit vs the Nature 4's 25-30A. Choose the Nature 4 for solo use and the smallest footprint. Choose the the next size up for 2-person capacity or more yoga space.
Does the Nature 4 use infrared or steam heat?
The Nature 4 is a dry infrared sauna only. It uses 6 full spectrum infrared heaters and does not have a steam stove. For a hybrid outdoor sauna with both infrared and steam, look at the Nature 7 (dry + steam, cedar construction, 220V) or Nature 8 Plus.
How heavy is the Nature 4 outdoor sauna?
883 lbs fully assembled. You need a level surface that can support this weight, like a concrete pad or reinforced deck. Two or more people are needed for assembly. White glove technician installation is available at checkout.
BEST FOR:
Solo outdoor sauna sessions
1-person. Weather-sealed cedar. UV-treated exterior. Place it on a patio, deck, or backyard and plug in.
Hot yoga at home outdoors
Interior designed for in-sauna yoga. Full spectrum heat while surrounded by fresh air and nature.
Small patios and backyards
Compact 51x42 inch footprint. 120V standard outlet. No electrician. No dedicated circuit.
Year-round outdoor wellness
All-weather construction. Use in summer heat or winter cold. UV coating protects the cedar.
Financing Options Available
We work with four financing partners so you can spread the cost over time. Apply with more than one to compare offers.
Brickhouse Capital
Up to $250K, one-page app. Approval in 24 hours. Lease or EFA options.
Reliant Capital
Up to $500K app-only. 3-24 month deferred payments. 2-4 hour approvals.
Acorn Finance
30+ lenders, one app. Prequalify in 60 seconds. Terms up to 12 years.
KWIPPED (APPROVE)
Lenders compete for your deal. Up to 3 offers. 12-60 month terms.
Visit our financing page to apply, or call 866-861-6317.
Compare All Nature Outdoor Sauna Models
Not sure which model fits? Compare every nature outdoor sauna side by side.
| Model | Capacity | Key Feature | Power | Price | Link |
|---|---|---|---|---|---|
| Nature 4 (You are here) | 1 Person | Compact outdoor, hot yoga | 120V | $5,589 | Current |
| Nature 5 | 2 Person | Couples outdoor, hot yoga | 120V | $7,589 | View |
| Nature 6 | 3 Person | Biggest 120V outdoor | 120V | $9,589 | View |
| Nature 7 | 3-4 Person | First outdoor hybrid IR+steam | 220V | $12,589 | View |
| Nature 8 Plus | 4-6 Person | Flagship hybrid, 12000W | 220V | $15,589 | View |
| Nature X | 6-8 Person | Largest outdoor ever built | 220V | $20,489 | View |
Prices shown are current sale prices. Call 866-861-6317 for volume pricing or bundle deals.
WARRANTY AT A GLANCE
- Duration: 3 years from date of receipt
- Coverage: Defects in materials and workmanship under residential use
- Parts: Covered under warranty
- Service / labor costs: Not included in the 3-year warranty
- Misuse or negligence: Not covered
- Who to contact: RecovAthlete — 866-861-6317
What the Warranty Covers
The Medical Breakthrough series of massage chairs are warranted against defects in materials and workmanship under typical residential use for a period of three (3) years from the date of receipt by the original end-user consumer.
This is a parts warranty. Replacement parts for covered defects are provided at no charge during the warranty period. Service and labor costs are not included and would be charged separately if a technician visit is required.
What Is Not Covered
NOT COVERED:
- Damage caused by misuse or negligence
- Damage from commercial or non-residential use
- Normal wear over time
- Damage caused during customer-arranged delivery or setup
- Service and labor costs — these are billed separately regardless of warranty status
Who This Warranty Applies To
This warranty applies to the original end-user consumer purchasing for personal, residential use. It is non-transferable. Chairs used in commercial environments — health clubs, clinics, spas, or any multi-user setting — are not covered under the residential warranty terms. Contact us at 866-861-6317 before purchasing for commercial use to discuss coverage options.
How to Make a Warranty Claim
If your Medical Breakthrough massage chair develops a defect covered under warranty, follow these steps:
- Call RecovAthlete at 866-861-6317 to report the issue
- Our team will gather details and diagnose the problem — many issues are resolvable without a parts replacement
- If a covered part needs replacing, we will coordinate the claim and delivery of the replacement part
- If a technician visit is required, we will advise on the service cost before any work is arranged
IMPORTANT: SERVICE COSTS
The 3-year warranty covers the cost of replacement parts only. If a technician is needed to install parts or diagnose an issue on-site, those service and labor fees are billed separately and are not covered by the warranty. We will always provide a cost estimate before any technician work is scheduled.
Warranty — Frequently Asked Questions
Warranty questions or need service support?
Call RecovAthlete first — we'll diagnose the issue and coordinate from there.
Call 866-861-6317Let customers speak for us
Have Questions? Talk to Our Equipment Team.
We respond within 2 hours.
US & Canada shipping. Financing available.
Recently viewed products
- Choosing a selection results in a full page refresh.