SaunaLife Wood-Fired Hot Tub Model S4 | Soak Series

Model S4 Outdoor Wood-Burning Hot Tub   

The SaunaLife SOAK-Series Model S4 represents the very best in wood-burning hot tub quality, efficiency, and luxury.  

Ready for your hot tub party  

The Model S4 wood-fired hot tub arrives completely assembled and is easy to set up. Its ergonomically shaped fiberglass tub is a comfortable place for up to 6 people. The interior surface is easy to clean, and the exterior is crafted from thermally enhanced spruce for superior weather resistance and durability. 

Engineered for efficiency and performance 

Engineered and crafted in the Northers Europe, this super-efficient hot tub heats in 1/3 of the time as traditional wood-fired hot tubs. No electrical connection is required. At the heart of the Model S4 is its ingenious self-cleaning corrugated stove with a secondary chamber that transfers heat from the smoke – reducing wood consumption up to 50% compared with other hot tubs. Brilliantly, the air between the fiberglass lining and the wood exterior is super-heated to accelerate the heating process. The stove is cleverly engineered to draw cooler water through a lower channel and redistribute it though an upper channel to equalize the temperature.  

Start enjoying sooner 

This incredibly efficient wood stove will heat 304 gallons of water from 40°F (5°C) to 95°F (35°C) in 1.5 to 2 hours – the fastest-heating wood-burning hot tub available.  

Relax with friends and family the luxury of your Model S4 backyard wood-burning hot tub from SaunaLife. 

Model S4 Outdoor Wood-Burning Hot Tub  

• Fully assembled hot tub 
• Steps 
• Insulated cover  
• Drainage with tap 
• Polished stainless steel chimney 
• Chimney cap 

Features

Model S4 Outdoor Wood-Burning Hot Tub   

• Thermo-Spruce materials (lasts up to 2X longer than Cedar)  
• Luxury outdoor wood-burning hot tub 
• Designed for outdoor ergonomic hot tub bathing experiences 
• Arrives fully assembled and no electricity required (eco-friendly) 
• Spacious interior holds over 304 gallons of pure water bathing pleasure 
• Thick dark grey contoured fiberglass lining provides enhanced bather comfort 
• Stainless steel wood-burning heater utilizes dual heat compartments for unmatched efficiency   
• Rapid response heat-up time prepares water to ideal temperatures in under 2-hours 
• Wood-burning heater constructed of 304 stainless steel 
• Polished stainless steel chimney with protection 
• Durable Thermo-Spruce tub surround (1.65” thick), painted black  
• Superior thermal resistance (R-value) to retain heat  
• Matching Thermo-Spruce wood steps for easy access 
• Extra thick steel reinforced foam cover, folds for ease of removal and storage 
• Dark grey marine grade vinyl cover exterior 
• Integrated hot tub drainage tap 
• Up to 6 bathers 
• Exterior dimensions – 79" diameter and 37” high  
• Interior dimensions – 71" diameter and 33” deep 
• Designed by SaunaLife and handcrafted in Northern Europe 

Thermo-Spruce Material Advantages 

• Lasts up to 2X longer than Cedar 
• Superior thermal resistance (R-value) 
• Eco-friendly 
• Ideal for water use (stable)  

Specifications

Technical

Installation and Operations Manual

Dimensions and Technical Drawing

Warranty

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:

1. Get Proof: A screenshot, ad, or live link showing the competitor's lower price.
2. Send Details: Include your order number, the product name, and the competitor info.
3. Submit via Contact Page: [RecovAthlete Contact Us]
4. 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.

⚠️ All SaunaLife saunas ship via LTL freight. Custom or made-to-order units cannot be canceled or refunded once production begins.

1. Warranty Coverage

• Limited Lifetime Warranty for residential use to original retail purchaser.
• Covers factory-assembled components found defective in workmanship.
• Excludes normal wear, natural weathering, sauna heaters, added components, and installation/delivery.

2. Warranty Service

• SaunaLife chooses repair or replacement (new or reconditioned parts).
• Return authorization required; prepaid freight to SaunaLife; SaunaLife ships back after repair.
• Labor, removal, or reinstallation not covered.
• Warranty void for misuse, alteration, commercial use, unsafe temps, harsh chemicals, or acts of God.

3. Shipping & Delivery

• LTL freight on wooden pallet, curbside only (driver lowers to ground level).
• Carrier contacts you to schedule delivery; please advise of difficult access or extra costs.
• No shipping outside the lower 48 U.S. states.

4. Order Process & Notifications

• Order confirmation emailed immediately after purchase.
• Stock items ship within ~5 business days; tracking info within 24 hrs of shipment.
• Backorders void pre-authorization; you’ll be notified.

5. Cancellations (Before Shipping)

• Cancel free of charge before order ships (exceptions: custom/made-to-order). We will have to deduct 5% payment processing fees
• Call 866-861-6317 or email info@recovathlete.com.

6. Cancellations & Refunds (After Shipping)

• Custom or made-to-order products: all sales final.
• Other returns subject to manufacturer approval.
• Customer pays all shipping on returns/exchanges.
• 25% cancellation fee + return freight may apply due to high LTL costs.
• Refunds issued within 5 business days after inspection at warehouse.

7. Damaged Shipments

• Inspect packaging on delivery; note any damage when signing.
• Send photos of damage to info@recovathlete.com for insurance claim processing.

8. Disclaimers

• SaunaLife disclaims implied warranties beyond those stated.
• Not liable for incidental or consequential damages or injury.
• Rights vary by state; no representative may alter the warranty.

Limited Lifetime Warranty Coverage:

• Sauna Life extends this Limited Warranty solely to the original retail consumer purchaser of any Sauna Life sauna purchased from one of its authorized resellers.
• Sauna Life warrants that the Sauna Life sauna shall be free from defects in workmanship under normal conditions of use and service for the lifetime of the sauna for residential applications after delivery to the original retail purchaser.
• Warranty is limited to making good any factory assembled component deemed defective in workmanship by Sauna Life.
• Exclusions: Normal material wear, natural weathering of lumber, installation or delivery of components, and applies only to the original retail purchaser.

Warranty Performance:

• Repair or replacement of defective part at Sauna Life's option.
• Substitution of part or component of equivalent value, either new or factory reconditioned.
• Repair or replacement assumes the remaining portion of the original product's warranty.
• Return authorization required for warranty service, prepaid freight to Sauna Life for repair, and shipping back to original purchaser.
• Prior contact with Sauna Life required for packaging, shipping instructions, and return authorization.
• Labor charges, removal, installation, or replacement of sauna or its components not covered.
• Exclusions: Normal wear and tear, cosmetic issues, changes due to natural aging and weathering, sauna heaters, and added components.

Acts Invalidating Warranty:

• Warranty void if subjected to alteration, misuse, abuse, commercial use, or unauthorized repairs.
• Alteration includes deviation from original assembly instructions, component change, or addition of non-approved devices contributing to failure or unsafe operation.
• Use in application not designed for voids warranty.
• Exclusions: Damage from operation above safe sauna temperatures, added components, harsh chemicals, product movement, and acts of God.

Disclaimers:

• Except as expressly provided, Sauna Life makes no other representation or warranty, expressly disclaims any implied or statutory warranties.
• Not liable for loss of use, incidental or consequential costs, expenses, or damage.
• Rights may vary from state to state.
• Sauna Life or its representatives not liable for injury or damage, even if caused by negligence.
• No authority to alter or change warranties, orally or in writing, by distributor, salesperson, dealer, retailer, or other representative of Sauna Life.