Karhu 20 PK

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Karhu 20 PK [Kastor]
Karhu 20 PK

Karhu 20 PK Karhu 20 PK
Karhu 20 PK Karhu 20 PK



Kastor Karhu 20 PK

“Karhu” means bear in Finnish language. The Kastor Karhu heater is special, although it is the staple of wood fired sauna heaters, the traditional format that suits the most saunas. The design is absolutely beautiful, elegant, simple, and the engineering inside is cutting edge.

Karhu 20 PK is the latest in sauna wood fired heater design, conforming to the strict CE-certification requirements in burn efficiency, particle emissions and exhaust gas temperatures.

The Karhu 20 PK is the most popular wood fired heater of the Kastor line. You will not go wrong with this heater, as it will give you unforgettable emotions for years to come.

Tekniset tiedot

Karhu 20 PK

Size: 19 x 19 x 31 in (48x48x79 cm)

Weight: 167 lbs (76 kg)

Stone capacity: 100-110 lbs (45–50 kg)

Safety distance to flammable material: Front 19.67 in (50 cm)

Sides and back 15.75 (40 cm), Above 53.5 in (136 cm)

Chimney diameter 5.1 in (130 mm)

Sauna size: 280 – 700 cuft (13 – 20 m3)


If you have a log-cabin sauna, add 25% to your actual sauna size for heater selection.

Why are wood fired heaters better than other types? Do the rocks know they are heated by fire instead of electricity? Well no, but they know a couple of things: there are typically more rocks and they are heated gently and more evenly. The steam delivered is thus more wholesome.

Ozone is the culprit also, as the very hot electrical resistors in an electrical heater cause the sauna air oxygen passing through to turn into ozone, which “tastes” stingy like you may have noticed outdoors after a lightning storm. There is no ozone created in a wood fired heater. Make sure you have a functioning ventilation in your electric sauna.

In a wood fired sauna the air also circulates in an optimal fashion, as the heater draws cooler air from the floor level for the burning and causes a more even heat inside the sauna.

Besides all this technical stuff, a wood fired heater has that smell of wood as you feed the fire, the charm of the flames, the subtle sound of a crackling fire burning.

The Kastor heaters are uncompromising in every detail, in materials and design. The construction and function reflects the over 100 years of experience that Kastor has in wood fired sauna heaters. The Karhu has a unique air circulation through the heater, a clean burning furnace, and an elegant and timeless design. The Kastor wood burning heaters have the best energy efficiency, (most heat out of least amount of wood and low particle emissions), on the market.



Tilaus ja toimitus

Delivery time: Ships out in 1-3 days from order .
(We'll inform you if other than that. You can check with us regarding availability.)

Saunastore LLC • FL, USA • Tel. 00 1 203 734 6677 • sales (at) saunastore.com • www.saunastore.com