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Experience a new era of elegant efficiency with the HUUM CLIFF 11 STU Sauna Heater Package.
This premium all-in-one bundle includes the CLIFF 11 kW stainless-steel heater, the UKU smart control system (Wi-Fi optional), and 165 lb of natural Olivine diabase stones — everything you need to create a high-performance, spa-quality sauna experience.
Designed for sauna rooms 354 – 566 ft³ (10 – 16 m³), the CLIFF 11 combines a slim vertical profile with powerful heat output and a stunning minimalist design handcrafted in Estonia 🇪🇪.
The internal air-duct system ensures heat distributes evenly while reducing warm-up time by up to 25% faster than standard electric heaters.
The CLIFF’s small safety clearances and narrow 10.6” width make it ideal for saunas where space is limited — without sacrificing performance.
Pair it with the UKU smart control panel to manage your sauna from anywhere with the HUUM mobile app. With advanced temperature precision, scheduling, and safety features, the CLIFF 11 delivers the perfect blend of Nordic craftsmanship and modern technology.
Complete package: CLIFF 11 kW heater + UKU control + 165 lb stones
For 354 – 566 ft³ sauna rooms
Slim profile (10.6” width) ideal for limited-space installations
Heats 25% faster via internal air-duct design
165 lb stone capacity for consistent, soft, radiant heat
240V / 1-phase / 11 kW output
Compatible with UKU Local, Wi-Fi, and Extension Box
Stainless-steel body & industrial-grade heating elements
Handcrafted in Estonia 🇪🇪 | ETL / SGS listed
3-Year Residential / 1-Year Commercial Warranty
Promotes detoxification and improved circulation
Relieves muscle soreness and joint tension
Supports stress reduction and deep relaxation
Improves sleep quality and skin tone
Provides a gentle, soft heat for an authentic sauna experience
This sauna heater requires a scheduled delivery appointment. It arrives securely crated on a wooden pallet, encased in protective three-ply cardboard.
The driver is responsible for curbside delivery only and will lower the items to ground level. Prior to shipment, customers are contacted to confirm delivery details and discuss any special circumstances that could affect access or cost.
Our goal is to ensure a smooth, safe delivery and a successful installation for your HUUM heater.
For quotes or special arrangements, email support@saunasanctum.comand include your model number and shipping address.
| Component | Specification |
|---|---|
| Model | CLIFF 11 STU |
| Power Output | 11 kW |
| Room Volume Range | 354 – 566 ft³ (10 – 16 m³) |
| Voltage / Phase | 240 V / Single Phase |
| Amperage Draw | 37.5 A |
| Circuit Breaker | 50 A |
| Stone Capacity | 165 lb (75 kg) – included |
| Heater Weight | 37.5 lb (17 kg) |
| Shipping Weight (With Stones) | 202.5 lb (92 kg) |
| Dimensions (W × D × H) | 10.6″ × 10.6″ × 38.4″ (270 × 270 × 975 mm) |
| Mount Type | Floor-standing |
| Construction | Stainless Steel |
| Certifications | SGS / ETL Listed |
| Origin | Handcrafted in Estonia |
| Warranty | 3-Year Residential / 1-Year Commercial (Excl. Elements) |
| Feature | Specification |
|---|---|
| Temperature Range | 104 °F – 230 °F (40 °C – 110 °C) |
| Display Dimensions (W × D × H) | 2.2″ × 0.9″ × 4.1″ (55 × 22 × 105 mm) |
| Main Module Dimensions (W × D × H) | 3.5″ × 2.3″ × 5.6″ (90 × 58 × 142 mm) |
| Temp Sensor Cable Length | 16.4 ft (5 m) |
| Door Sensor Cable Length | 16.4 ft (5 m) |
| Display Panel Cable Length | 9.8 ft (3 m) |
| Wi-Fi Option | HUUM App Integration (Upgrade) |
| Mount Location | Inside or Outside Sauna Room |
| Languages | 8 – English, German, Finnish, French & more |
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Experience a new era of elegant efficiency with the HUUM CLIFF 11 STU Sauna Heater Package.
This premium all-in-one bundle includes the CLIFF 11 kW stainless-steel heater, the UKU smart control system (Wi-Fi optional), and 165 lb of natural Olivine diabase stones — everything you need to create a high-performance, spa-quality sauna experience.
Designed for sauna rooms 354 – 566 ft³ (10 – 16 m³), the CLIFF 11 combines a slim vertical profile with powerful heat output and a stunning minimalist design handcrafted in Estonia 🇪🇪.
The internal air-duct system ensures heat distributes evenly while reducing warm-up time by up to 25% faster than standard electric heaters.
The CLIFF’s small safety clearances and narrow 10.6” width make it ideal for saunas where space is limited — without sacrificing performance.
Pair it with the UKU smart control panel to manage your sauna from anywhere with the HUUM mobile app. With advanced temperature precision, scheduling, and safety features, the CLIFF 11 delivers the perfect blend of Nordic craftsmanship and modern technology.
Complete package: CLIFF 11 kW heater + UKU control + 165 lb stones
For 354 – 566 ft³ sauna rooms
Slim profile (10.6” width) ideal for limited-space installations
Heats 25% faster via internal air-duct design
165 lb stone capacity for consistent, soft, radiant heat
240V / 1-phase / 11 kW output
Compatible with UKU Local, Wi-Fi, and Extension Box
Stainless-steel body & industrial-grade heating elements
Handcrafted in Estonia 🇪🇪 | ETL / SGS listed
3-Year Residential / 1-Year Commercial Warranty
Promotes detoxification and improved circulation
Relieves muscle soreness and joint tension
Supports stress reduction and deep relaxation
Improves sleep quality and skin tone
Provides a gentle, soft heat for an authentic sauna experience
This sauna heater requires a scheduled delivery appointment. It arrives securely crated on a wooden pallet, encased in protective three-ply cardboard.
The driver is responsible for curbside delivery only and will lower the items to ground level. Prior to shipment, customers are contacted to confirm delivery details and discuss any special circumstances that could affect access or cost.
Our goal is to ensure a smooth, safe delivery and a successful installation for your HUUM heater.
For quotes or special arrangements, email support@saunasanctum.comand include your model number and shipping address.
| Component | Specification |
|---|---|
| Model | CLIFF 11 STU |
| Power Output | 11 kW |
| Room Volume Range | 354 – 566 ft³ (10 – 16 m³) |
| Voltage / Phase | 240 V / Single Phase |
| Amperage Draw | 37.5 A |
| Circuit Breaker | 50 A |
| Stone Capacity | 165 lb (75 kg) – included |
| Heater Weight | 37.5 lb (17 kg) |
| Shipping Weight (With Stones) | 202.5 lb (92 kg) |
| Dimensions (W × D × H) | 10.6″ × 10.6″ × 38.4″ (270 × 270 × 975 mm) |
| Mount Type | Floor-standing |
| Construction | Stainless Steel |
| Certifications | SGS / ETL Listed |
| Origin | Handcrafted in Estonia |
| Warranty | 3-Year Residential / 1-Year Commercial (Excl. Elements) |
| Feature | Specification |
|---|---|
| Temperature Range | 104 °F – 230 °F (40 °C – 110 °C) |
| Display Dimensions (W × D × H) | 2.2″ × 0.9″ × 4.1″ (55 × 22 × 105 mm) |
| Main Module Dimensions (W × D × H) | 3.5″ × 2.3″ × 5.6″ (90 × 58 × 142 mm) |
| Temp Sensor Cable Length | 16.4 ft (5 m) |
| Door Sensor Cable Length | 16.4 ft (5 m) |
| Display Panel Cable Length | 9.8 ft (3 m) |
| Wi-Fi Option | HUUM App Integration (Upgrade) |
| Mount Location | Inside or Outside Sauna Room |
| Languages | 8 – English, German, Finnish, French & more |