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Harvia Pro 20 ES wood-burning heater

A 24.1 kW wood-burning sauna stove from Harvia, rated by the maker for 283–706 ft³ (about 8–20 m³, our conversion). Every figure below is Harvia's own, linked to where it is published.

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Specifications published by Harvia (9)
Heater output
24.1 kWWood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia
Room size it is rated for
283–706 ft³ (about 8–20 m³, our conversion)Wood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia
Fuel
Wood-burningWood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia
Stone capacity
88.2 lbWood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia
Mounting
FloorWood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia
Dimensions
H 29.92 in x W 16.93 in x D 25.59 inWood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia
Weight
143.3 lbWood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia
Water tank
Integrated 20-litre front water tankWood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia
Glass door
YesWood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia

As published by Harvia, read on 2026-09-22. Makers revise their products; check Harvia's current specification before you buy. Figures marked "about" are Saunakivi's unit conversions of the maker's figure.

Before you buy

Also see

If you are looking for more

Rated for a bigger room: Narvi Kaamos 20

Narvi rates it for 10–20 m³ (about 353–706 ft³, our conversion); Harvia rates the Pro 20 ES wood-burning heater for 283–706 ft³ (about 8–20 m³, our conversion).

Compare it with

Other wood-burning stoves

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)

Pro 20 ES wood-burning heater: questions answered from Harvia's specification

What is the output of the Pro 20 ES wood-burning heater?

Harvia lists 24.1 kW. Related question: What size sauna heater do I need?

Source: Wood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia

What size of sauna room is the Pro 20 ES wood-burning heater for?

Harvia rates it for 283–706 ft³ (about 8–20 m³, 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: Wood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia

How many stones does the Pro 20 ES wood-burning heater hold?

Harvia lists a stone capacity of 88.2 lb.

Source: Wood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia

Can the Pro 20 ES wood-burning heater heat water?

Harvia lists: Integrated 20-litre front water tank.

Source: Wood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia

More from Harvia: all Harvia products on Saunakivi.

Sources

  1. Wood burning heater Harvia Pro 20 ES black | Wood burning heaters | Harvia — Harvia