Rated for a bigger room: Kuuma Low Profile (Medium)
Kuuma rates it for 448–700 ft³ (about 12.7–19.8 m³, our conversion); HUUM rates the HIVE Flow for 8–18 m³ (about 283–636 ft³, our conversion).
HUUM HIVE Flow
A 9.8 kW wood-burning sauna stove from HUUM, rated by the maker for 8–18 m³ (about 283–636 ft³, our conversion). Every figure below is HUUM's own, linked to where it is published.
See it comparedAs an Amazon Associate we earn from qualifying purchases. Some links on this page are paid: if you buy after following one, the retailer pays Saunakivi (IPORA LLC) a commission. It costs you nothing extra, and it never changes the specifications we list.
Specifications published by HUUM (10)
- Heater output
- 9.8 kWHIVE Flow Wood-Burning Stove - HUUM
- Room size it is rated for
- 8–18 m³ (about 283–636 ft³, our conversion)HIVE Flow Wood-Burning Stove - HUUM
- Fuel
- Wood-burningHIVE Flow Wood-Burning Stove - HUUM
- Stone capacity
- ~150 kgHIVE Flow Wood-Burning Stove - HUUM
- Dimensions
- H 884 mm x W 526 mm x D 586 mmHIVE Flow Wood-Burning Stove - HUUM
- Weight
- 67 kgHIVE Flow Wood-Burning Stove - HUUM
- Glass door
- YesHIVE Flow Wood-Burning Stove - HUUM
- Flue / chimney diameter
- 114 mmHIVE Flow Wood-Burning Stove - HUUM
- Warranty
- 3 years (private use); 1 year (commercial use)HUUM Limited Warranty Terms and Conditions (v4, ENG)
- Made in
- EstoniaHIVE Flow Wood-Burning Stove - 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.
- Wood or electric. Our wood vs electric guide sets out what each needs to install.
If you are looking for more
Compare it with
HIVE Flow vs Pro 20 ES wood-burning heater
Side by side with the Harvia Pro 20 ES wood-burning heater. Both wood-burning stoves are rated by their makers for at least some of the same room sizes.
HIVE Flow vs Kaamos 20
Side by side with the Narvi Kaamos 20. These wood-burning stoves carry maker room-size ratings that share part of the same range.
HIVE Flow vs Stony 20
Side by side with the Narvi Stony 20. Both wood-burning stoves are rated by their makers for at least some of the same room sizes.
Other wood-burning stoves
Harvia M3 wood-burning heater
Harvia · wood-burning · 16.5 kW · rated for 212–459 ft³ (about 6–13 m³, our conversion)
Harvia Pro 20 ES wood-burning heater
Harvia · wood-burning · 24.1 kW · rated for 283–706 ft³ (about 8–20 m³, our conversion)
Harvia Legend 150 wood-burning heater
Harvia · wood-burning · 16 kW · rated for 6–13 m³ (about 212–459 ft³, our conversion)
HUUM HIVE Wood 13
HUUM · wood-burning · 13 kW · rated for 6–13 m³ (about 212–459 ft³, our conversion)
Kuuma Classic Legacy (Medium)
Kuuma · wood-burning · rated for 512–780 ft³ (about 14.5–22.1 m³, our conversion)
Kuuma Low Profile (Medium)
Kuuma · wood-burning · rated for 448–700 ft³ (about 12.7–19.8 m³, our conversion)
HIVE Flow: questions answered from HUUM's specification
What is the output of the HIVE Flow?
HUUM lists 9.8 kW. Related question: What size sauna heater do I need?
What size of sauna room is the HIVE Flow for?
HUUM rates it for 8–18 m³ (about 283–636 ft³, our conversion). See our heater sizing guide for how makers adjust that figure for glass and uninsulated walls. Related question: Wood-burning sauna stoves: which room size is each rated for?
How many stones does the HIVE Flow hold?
HUUM lists a stone capacity of ~150 kg.
What flue size does the HIVE Flow need?
HUUM lists 114 mm. Flue and chimney work should follow the manual and local code.
What warranty does HUUM give on the HIVE Flow?
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.