Kaamos means "Polar Night" in Finnish, and this Narvi wood burning sauna heater keeps to a minimalist look: an angular exterior, a simple black upper frame and a matte finish. Narvi handcrafts Kaamos stoves in Finland.

Built for a clean burn

A large, robust grate and a rear air circulation system help the heater burn cleanly and efficiently. Its cast iron door with glass lets you watch the flames, resists warping during use, and has a wooden handle that is comfortable to hold. Under the paint sits corrosion-protected steel, and a 0.4 in (10 mm) firebox roof adds reliability.

Choosing a size

Kaamos 16: 282 to 565 cu ft (8 to 16 m³), 110 lbs (50 kg) of stones.

Kaamos 20: 353 to 706 cu ft (10 to 20 m³), 132 lbs (60 kg) of stones.

Kaamos 24: 424 to 847 cu ft (12 to 24 m³), 176 lbs (80 kg) of stones.

Setting it up

Stability and installation are simpler thanks to adjustable feet. Connect the flue at the back or top; a short connection pipe comes with the stove. Allow at least 12 in (300 mm) at the sides, 8 in (200 mm) at the rear, 20 in (500 mm) in front and 50 in (1270 mm) above. A concrete floor at least 2 in (50 mm) thick can carry the stove directly, while combustible or tiled floors need a Narvi installation base.

Rocks and accessories

Olivine diabase or vulcanite stones of 4 to 6 in (10 to 15 cm) are Narvi's recommendation. Add rocks, a chimney adapter, a chimney, a floor plate and a back wall shield as you configure it here.