The Cozy Heat Thru-Wall Sauna Stove is a Cozy Heat wood-burning sauna stove, handmade in Estonia. This is the classic Cozy cage stove — handmade in Estonia, mild long heat, water on the rocks. Listings here offer 12 kW and 18 kW. Manufacturer ranges: 12 kW about 210–423 cu ft; 18 kW about 317–635 cu ft. Our older combined line of 210–635 cu ft covered both sizes on one page — pick kW from the option list, not from a blended number.
How it heats
Wood fire under a large stone pile. No electric heater circuit. Pour water for löyly. Thru-wall / TW: load firewood from outside the hot room. Top flue. Follow the Cozy manual for clearances and chimney. First firing is smoky — do it as the manufacturer says.
What’s included
Stove in the finish/model named
Stones sold separately unless a package names them
Chimney cover sold separately (cover, not a flue)
Specs
Brand: Cozy Heat (Estonia)
Fuel: Wood
Outputs on this listing: 12 kW and 18 kW options
12 kW room range (manufacturer): about 210–423 cu ft
18 kW room range (manufacturer): about 317–635 cu ft
Firebox feed: Through-wall
Downloads
Email hello@selfcaresaunas.com for the spec sheet.
Sizing
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
Stones included? Heater-only: no. Packages: stone type is in the option name; confirm count with our team.
Electric hookup for the stove? No. Wood plus chimney.
Manual PDF? Email hello@selfcaresaunas.com for the Cozy spec sheet. We will not link a dealer-hosted copy.
