Rated for a bigger room: HUUM HIVE 12
HUUM rates it for 12–18 m³ (about 424–636 ft³, our conversion); HUUM rates the CLIFF 11 for 10–16 m³ (about 353–565 ft³, our conversion).
HUUM CLIFF 11
A electric sauna heater from HUUM, rated by the maker for 10–16 m³ (about 353–565 ft³, our conversion). Every figure below is HUUM's own, linked to where it is published.
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Specifications published by HUUM (10)
- Room size it is rated for
- 10–16 m³ (about 353–565 ft³, our conversion)Electric Sauna Heater CLIFF - HUUM
- Fuel
- ElectricElectric Sauna Heater CLIFF - HUUM
- Voltage
- 240 V 2~ or 208 V 2~Electric Sauna Heater CLIFF - HUUM
- Breaker / current
- 50 A (240 V), 50 A (208 V)Electric Sauna Heater CLIFF - HUUM
- Stone capacity
- 75 kgElectric Sauna Heater CLIFF - HUUM
- Controls
- The UKU control system set already includes a black plastic control panel CLASSIC BlackElectric Sauna Heater CLIFF - HUUM
- Dimensions
- H 975 mm x W 270 mm x D 270 mmElectric Sauna Heater CLIFF - HUUM
- Weight
- 17 kgElectric Sauna Heater CLIFF - HUUM
- Warranty
- 3 years (private use); 1 year (commercial use)HUUM Limited Warranty Terms and Conditions (v4, ENG)
- Made in
- EstoniaElectric Sauna Heater CLIFF - HUUM
As published by HUUM, read on 2026-09-23. Makers revise their products; check HUUM's current specification before you buy. Figures marked "about" are Saunakivi's unit conversions of the maker's figure.
Before you buy
- Room size. Our heater sizing guide explains how makers adjust the rated room size for glass and uninsulated walls.
If you are looking for more
A longer stated warranty, on at least part of the product: Finnleo Designer-SL2 6.0 kW
Finnleo states: 5 years parts (traditional sauna heater), residential; 2 years in-field labor + 3 years at-factory labor (non-commercial); commercial: 2-year parts-only. HUUM states for the CLIFF 11: 3 years (private use); 1 year (commercial use).
Compare it with
CLIFF 11 vs Air L 13
Side by side with the Saunum Air L 13. These electric heaters carry maker room-size ratings that share part of the same range.
Other electric heaters
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Harvia KIP60W 6.0 kW 240V
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Harvia Cilindro Half PC90H 9 kW 208V
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HUUM DROP 6
HUUM · electric · 6 kW · rated for 5–9 m³ (about 177–318 ft³, our conversion)
HUUM DROP 9
HUUM · electric · 9 kW · rated for 8–13 m³ (about 283–459 ft³, our conversion)
CLIFF 11: questions answered from HUUM's specification
What size of sauna room is the CLIFF 11 for?
HUUM rates it for 10–16 m³ (about 353–565 ft³, our conversion). See our heater sizing guide for how makers adjust that figure for glass and uninsulated walls.
What voltage does the CLIFF 11 run on?
HUUM lists 240 V 2~ or 208 V 2~. Related question: Does a sauna heater need 240 V, or will 120 V work?
What breaker or current does the CLIFF 11 need?
HUUM lists 50 A (240 V), 50 A (208 V). The installation manual and a licensed electrician have the final word. Related question: What breaker does a sauna heater need?
How many stones does the CLIFF 11 hold?
HUUM lists a stone capacity of 75 kg.
How is the CLIFF 11 controlled?
HUUM lists: The UKU control system set already includes a black plastic control panel CLASSIC Black.
What warranty does HUUM give on the CLIFF 11?
HUUM lists: 3 years (private use); 1 year (commercial use).
Source: HUUM Limited Warranty Terms and Conditions (v4, ENG)
More from HUUM: all HUUM products on Saunakivi.