Rated for a bigger room: HUUM DROP 7
HUUM rates it for 7–11 m³ (about 247–388 ft³, our conversion); HUUM rates the CORE 6 for 5–9 m³ (about 177–318 ft³, our conversion).
HUUM CORE 6
A 6.5 kW electric sauna heater from HUUM, rated by the maker for 5–9 m³ (about 177–318 ft³, our conversion). Every figure below is HUUM's own, linked to where it is published.
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Specifications published by HUUM (11)
- Heater output
- 6.5 kWElectric Sauna Heater CORE - HUUM
- Room size it is rated for
- 5–9 m³ (about 177–318 ft³, our conversion)Electric Sauna Heater CORE - HUUM
- Fuel
- ElectricElectric Sauna Heater CORE - HUUM
- Voltage
- 240 V 2~ or 208 V 2~Electric Sauna Heater CORE - HUUM
- Breaker / current
- 30 A (240 V), 30 A (208 V)Electric Sauna Heater CORE - HUUM
- Stone capacity
- 40 kgElectric Sauna Heater CORE - HUUM
- Controls
- The UKU control system set already includes a black plastic control panel CLASSIC BlackElectric Sauna Heater CORE - HUUM
- Dimensions
- H 830 mm x W 385 mm x D 385 mmElectric Sauna Heater CORE - HUUM
- Weight
- 19 kgElectric Sauna Heater CORE - HUUM
- Warranty
- 3 years (private use); 1 year (commercial use)HUUM Limited Warranty Terms and Conditions (v4, ENG)
- Made in
- EstoniaElectric Sauna Heater CORE - 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 CORE 6: 3 years (private use); 1 year (commercial use).
Compare it with
CORE 6 vs Designer-SL2 6.0 kW
Side by side with the Finnleo Designer-SL2 6.0 kW. Both electric heaters are rated by their makers for at least some of the same room sizes.
CORE 6 vs KIP60W 6.0 kW 240V
Side by side with the Harvia KIP60W 6.0 kW 240V. These electric heaters carry maker room-size ratings that share part of the same range.
CORE 6 vs Air 7
Side by side with the Saunum Air 7. Both electric heaters are rated by their makers for at least some of the same room sizes.
Other electric heaters
Harvia KIP80B 8 kW 240VAC
Harvia · electric · 8 kW · rated for 251–424 ft³ (about 7.1–12 m³, our conversion)
Harvia KIP45B 4.5 kW 240VAC
Harvia · electric · 4.5 kW · rated for 100–211 ft³ (about 2.8–6 m³, our conversion)
Harvia KIP60W 6.0 kW 240V
Harvia · electric · 6 kW · rated for 170–300 ft³ (about 4.8–8.5 m³, our conversion)
Harvia Cilindro Half PC90H 9 kW 208V
Harvia · electric · 9 kW
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)
CORE 6: questions answered from HUUM's specification
What is the output of the CORE 6?
HUUM lists 6.5 kW. Related question: What size sauna heater do I need?
What size of sauna room is the CORE 6 for?
HUUM rates it for 5–9 m³ (about 177–318 ft³, our conversion). See our heater sizing guide for how makers adjust that figure for glass and uninsulated walls.
What voltage does the CORE 6 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 CORE 6 need?
HUUM lists 30 A (240 V), 30 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 CORE 6 hold?
HUUM lists a stone capacity of 40 kg.
How is the CORE 6 controlled?
HUUM lists: The UKU control system set already includes a black plastic control panel CLASSIC Black.
What warranty does HUUM give on the CORE 6?
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.