HUUM CLIFF Sauna Heater
The HUUM CLIFF is the award-winning electric sauna heater that redefines the home and studio sauna experience. With its slim, vertical design, internal air tunnel for faster heating, and generous stone capacity, CLIFF delivers authentic Finnish steam in less time and with unmatched efficiency.
Winner of the prestigious Red Dot Award for product design, this heater combines modern aesthetics, eco-responsibility, and professional-grade performance trusted worldwide.
Hand-built in Estonia using recycled stainless steel, each unit is test-run in real sauna conditions before shipping. Whether you’re setting up a private 2-person sauna or a family-sized cabin, CLIFF ensures long-lasting, gentle steam and reliable daily performance.
Key Features That Matter
- Faster Heating – Reaches 80 °C in as little as 20 minutes thanks to HUUM’s unique internal air tunnel.
- Authentic Steam – 165 lbs (75 kg) of stones create long, soft steam with stable temperatures.
- Built to Last – Stainless steel body and natural stone surface resist daily wear.
- Smart Control – Pair with HUUM’s UKU control system (sold separately) to pre-heat or monitor your sauna from your phone.
- Eco Responsible – Zero-waste stainless steel manufacturing supports sustainable practices.
- Award-Winning Design – Slim vertical profile fits modern interiors without sacrificing performance.
🌟 Model Options
6 kW – Compact Performance
• Room size: 176–353 ft³ (5–9 m³)
• Best for small apartments and 2-person saunas
• Time to 80 °C: 30–45 minutes
9 kW – The Sweet Spot
• Room size: 353–600 ft³ (8–13 m³)
• Ideal for family saunas up to 4 people
• Time to 80 °C: 25–35 minutes
11 kW – Maximum Power
• Room size: 353–565 ft³ (10–16 m³)
• Fastest heat for large saunas or frequent use
• Time to 80 °C: 20–30 minutes
💪 Specifications at a Glance
- Power: 6 kW • 9 kW • 10.5 kW
- Voltage: 230 V single-phase (6 & 9 kW) or 400 V 3-phase (all models)
- Current: 26 A (6 kW single-phase) • 39 A (9 kW single-phase) • 15.2 A (11 kW 3-phase)
- Size: 10.6 × 10.6 × 38.4 in (270 × 270 × 975 mm)
- Weight: 35–37 lbs (16–17 kg)
- Stone Capacity: 165 lbs (75 kg)
🌟 What’s Included
- HUUM CLIFF sauna heater
- Adjustable floor legs
- Installation manual
- Red Dot Award certificate
- 5-year warranty on body and components
(Sold separately: UKU control system, sauna stones, installation by a licensed electrician)
💪Warranty You Can Count On
- 5-year limited warranty on heater body and components
- 2-year coverage on heating elements
- Estonia-based service and support
Why It Outperforms Traditional Heaters?
- Up to 25% Faster Heat-Up vs. standard Finnish heaters
- Superior Steam Quality from high thermal mass stone load
- Sustainable Manufacturing with zero-waste steel
- Modern Award-Winning Aesthetics to complement any space
Trusted Worldwide
HUUM has three generations of sauna expertise, and every CLIFF heater is hand-built in Estonia and tested before shipping. Lifespan expectations: heater body 20+ years, heating elements 5–10 years, controls 10–15 years.
📘Resources
- Installation & Operation Manual
- Cliff Specification Diagram
- HUUM Stone Requirements
- HUMM Elements Required
- HUUM Heater Warranty
- Certificate Of Compliance
- Size Your Sauna
FAQs
Can I install it myself?
You can mount the heater body. Electrical work must be done by a licensed electrician where required.
What stones should I use?
3–5 cm Finnish sauna stones. Avoid decorative or river rocks.
How long do the heating elements last?
Typical home use is 5–10 years depending on frequency and operating temperature.
Can I control multiple heaters?
Yes. With additional UKU controllers you can manage multiple zones independently.
Does it work with 230 V single-phase?
Yes for 6 kW and 9 kW models with correct cable sizing and fusing.