The Harvia Pro 20 Duo is a Harvia wood-burning sauna stove rated 24.1 kW for rooms of about 283–706 cu ft. Made in Finland. Duo lets you enjoy the fire from the dressing-room / through-wall arrangement as designed. You burn wood, heat the stones, and throw water for löyly — no electric heater circuit for the stove itself.
How it heats
Load firewood in the firebox. The stove body and the stones store heat; ladle water onto the rocks for steam. Connect to a proper chimney with the clearances in the Harvia wood-stove manual. Through-wall models put the loading door on the cool side of the wall. Chimney kits are sold separately unless a WH package on this site names one.
What’s included
Wood-burning stove
Stones sold separately
Chimney / WHP steel chimney kit sold separately
Specs
Brand: Harvia (Finland)
Fuel: Wood
Heater output: 24.1 kW
Approx. room volume: 283–706 cu ft
Mount: Floor
Stone capacity: See Harvia wood-stove manual for stone size (typically 10–15 cm)
Firebox feed: Duo (heat/feed from the dressing-room side as designed)
Match stove output to insulated volume. Glass and masonry eat heat. Chimney, clearances, and combustion air follow the manufacturer manual and local code. Email hello@selfcaresaunas.com if you want a second look at the room.
FAQ
Are stones included? Not on the stove-only listing. Packages: only if our team confirms stones are in that carton.
Does it need 240V? No. It burns wood. You still need a legal chimney and clearances.
Indoor or outdoor? The stove sits in a sauna room. That room can be an indoor build or an outdoor cabin rated for a wood stove.
Chimney included? Only when a package clearly includes it (often the WH SKUs). Otherwise order a chimney kit.
