Every Detail
Specifications & Details
Specifications
Model: Narvi Kaamos 20
Heater Type: Wood-burning sauna stove — panoramic glass door series
Room Capacity: Up to 20 m³ (approximately 706 cu ft)
Stone Capacity: 88 lbs (40 kg) of sauna stones
Material: Aluminized carbon steel body; heat-resistant panoramic glass door
Country of Manufacture: Finland
Fuel Type: Wood-fired (birch, ash, or hardwood recommended)
Approximate Weight: 95 lbs (43 kg) without stones
Flue Diameter: 5″ (125 mm)
Certifications: CE certified; meets EU emissions standards
What's Included
- Narvi Kaamos 20 wood-burning sauna heater with panoramic glass door
- Firebox grate
- Ash pan
- Installation and operation manual
- Manufacturer warranty card
Sauna stones sold separately — we recommend 65–88 lbs of igneous sauna stones.
Sauna Compatibility & Sizing
Minimum Room Size: 8 m³ (283 cu ft)
Maximum Room Size: 20 m³ (706 cu ft)
Ideal Sauna Types: Dundalk 8 ft barrel saunas, medium cabin saunas, traditional Finnish rooms up to 10×10 ft
Clearance to Combustibles: Minimum 18″ on sides and rear; 24″ above the firebox opening
Flue / Chimney: Requires a listed chimney system — consult a licensed installer
Electrical: None required — entirely wood-fired
Floor Protection: Non-combustible hearth pad required under and in front of the heater
Shipping & Warranty
Shipping Method: LTL freight — curbside delivery to your driveway
Estimated Transit: 5–10 business days after order is processed
Freight Note: A delivery appointment will be scheduled; someone must be present to receive the shipment
Country of Origin: Finland
Warranty: 2-year limited manufacturer warranty covering defects in materials and workmanship under normal residential use
Claims: Contact Sauna Co. at info@saunacompanyusa.com with your order number and photos of the issue
Resources
Documents & Manuals
Installation & Instruction Manual
5-Year Warranty
Narvi Kaamos 20 Wood-Burning Sauna Heater
Overview
The Narvi Kaamos 20 is a freestanding Finnish wood-burning sauna stove with a generous rock bed for soft, abundant löyly. Its clean, modern lines suit barrel and cabin saunas alike, and the large firebox delivers powerful, long-lasting heat for bigger rooms.
Handcrafted from steel by Narvi — the authentic crackle and aroma of a real wood fire, with no electricity required.
- Wood-fired: no electrical hookup needed
- Large stone bed for soft, abundant steam
- Built for bigger saunas — powerful, long-lasting heat
Do your research first
This is a big purchase. We'd rather you get a fair look at the market — compare with these trusted sources before you decide.
Watch & learn
Installation Guide
Follow along with this step-by-step installation and assembly walkthrough so you know exactly what to expect. Our team is one message away if you need a hand.
Do your research first
This is a big purchase. We’d rather you get a fair look at the market — compare with these trusted sources before you decide.
to a friend
The Kaamos 20 is a serious wood-burning heater for a larger sauna. The fire heats the room deeply and evenly, and the big stone capacity gives a massive steam burst. There's nothing like the crackle of real wood. Make sure your flue and clearances are correct. Outstanding heat.
We use the Kaamos 20 at our lake cabin and it's the heart of our winter sauna. Heavy, beautifully built, and it puts out tremendous, even heat. Loading the wood and building the fire is part of the ritual we love. Highly recommend for an off-grid setup.
The Kaamos 20 is a fantastic wood-burning heater with deep authentic heat for a big room. The install is substantial though, requiring proper chimney and clearances, so plan and budget for that. Once set up it heats efficiently and the steam is incredible.
If you want true wood-fired heat for a larger sauna, the Kaamos 20 delivers. It's robust, heats beautifully, and holds plenty of stones for great loyly. The wood heat feels softer than electric. It's the centerpiece of our cabin.
Heavy, well made, and powerful. The Kaamos 20 heats our large sauna quickly for a wood unit and the even heat is wonderful. Perfect for our off-grid cabin where electric wasn't practical. Couldn't be happier with the authentic experience.