Rated for a bigger room: Kuuma Classic Legacy (Medium)
Kuuma rates it for 512–780 ft³ (about 14.5–22.1 m³, our conversion); Narvi rates the Kaamos 20 for 10–20 m³ (about 353–706 ft³, our conversion).
Narvi Kaamos 20
A wood-burning sauna stove from Narvi, rated by the maker for 10–20 m³ (about 353–706 ft³, our conversion). Every figure below is Narvi's own, linked to where it is published.
See it at NarviSpecifications published by Narvi (9)
- Room size it is rated for
- 10–20 m³ (about 353–706 ft³, our conversion)Narvi Kaamos - Narvi Oy
- Fuel
- Wood-burningNarvi Kaamos - Narvi Oy
- Stone capacity
- 60 kgNarvi Kaamos - Narvi Oy
- Dimensions
- H 76 cm x W 48 cm x D 51 cmNarvi Kaamos - Narvi Oy
- Weight
- 65 kgNarvi Kaamos - Narvi Oy
- Water tank
- Separate 'Kaamos 20 with water tank' modelNarvi Kaamos - Narvi Oy
- Glass door
- YesNarvi Kaamos - Narvi Oy
- Flue / chimney diameter
- 119 mmNarvi Kaamos - Narvi Oy
- Warranty
- 2 years (private use); 1 year (non-private use)Limited Warranty - Narvi Oy
As published by Narvi, read on 2026-09-23. Makers revise their products; check Narvi'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
A longer stated warranty, on at least part of the product: HUUM HIVE Flow
HUUM states: 3 years (private use); 1 year (commercial use). Narvi states for the Kaamos 20: 2 years (private use); 1 year (non-private use).
Compare it with
Kaamos 20 vs Pro 20 ES wood-burning heater
Side by side with the Harvia Pro 20 ES wood-burning heater. The makers of both wood-burning stoves publish rated room sizes that overlap.
Kaamos 20 vs HIVE Flow
Side by side with the HUUM HIVE Flow. These wood-burning stoves carry maker room-size ratings that share part of the same range.
Kaamos 20 vs Low Profile (Medium)
Side by side with the Kuuma Low Profile (Medium). 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)
HUUM HIVE Flow
HUUM · wood-burning · 9.8 kW · rated for 8–18 m³ (about 283–636 ft³, our conversion)
Kuuma Classic Legacy (Medium)
Kuuma · wood-burning · rated for 512–780 ft³ (about 14.5–22.1 m³, our conversion)
Kaamos 20: questions answered from Narvi's specification
What size of sauna room is the Kaamos 20 for?
Narvi rates it for 10–20 m³ (about 353–706 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?
Source: Narvi Kaamos - Narvi Oy
How many stones does the Kaamos 20 hold?
Narvi lists a stone capacity of 60 kg.
Source: Narvi Kaamos - Narvi Oy
What flue size does the Kaamos 20 need?
Narvi lists 119 mm. Flue and chimney work should follow the manual and local code.
Source: Narvi Kaamos - Narvi Oy
Can the Kaamos 20 heat water?
Narvi lists: Separate 'Kaamos 20 with water tank' model.
Source: Narvi Kaamos - Narvi Oy
What warranty does Narvi give on the Kaamos 20?
Narvi lists: 2 years (private use); 1 year (non-private use).
Source: Limited Warranty - Narvi Oy
More from Narvi: all Narvi products on Saunakivi.
Sources
- Narvi Kaamos - Narvi Oy — Narvi
- Limited Warranty - Narvi Oy — Narvi