While you may want to skimp on some things for a sauna, a well built sauna stove is really the heart of the sauna and sauna experience. With a well built and properly designed wood fired sauna stove you will have a safe and durable unit that will provide you years of service.
We reviewed a variety of sauna stove manufacturers, both locally fabricated and imported from Finland. In the end we chose the Cadillac of US built sauna stoves, the Kuuma sauna stove, fabricated by Lamppa manufacturing in Tower, Minnesota. Although a Kuuma sauna stove may be more expensive than other sauna stoves.... you get what you pay for.
Their stoves are built like a tank with minimum 1/4" thick steel (two 1/4" thick steel plates on the back of the stove) and a 1/2" thick stainless steel fire baffle in the stove. The cast iron grate in our stove is over 1/2" thick! Try to find this type of construction on any other sauna stove? You won't.
The adjustable air carburetor allows you to precisely adjust the air flow for efficient burning. The draft on this stove is amazing, and with the glass viewing window you can easily see how well the fire is burning.
The 12 gallon stainless steel tank which hangs on the side of the stove heats up water to be used for bathing.
We ordered the small Kuuma sauna stove with the Setri "cedar" package which included:
ashpan
extended heat shield
single heat shield
glass viewing window
12 gallon stainless steel hot water tank.
Approved to UL #1482 by PFS Corporation
Unique front to back burn
Air-Tight
Optional glass viewing window on loading door
Adjustable hinges and latch
Cool coil handles
Air inlet carburetor to allow precise air control for burning
Stainless steel baffled fire chamber
Firebrick stove interior included
Optional heat shields to allow stove to be placed closer to combustible materials
Built like a tank!
American steel, manufactured in the USA for generations!
A big thank you to my brother Steve Leppälä who made a contribution towards the purchase of this great sauna stove. Kiitos veli!
Lamppa manufacturing recommends that their Kuuma wood-burning sauna stoves be given three successively hotter curing burns before installing the stove in your sauna. This curing process will help burn off any residual oils and paints which may give off a bad odor in your sauna if your stove has not been properly cured. The video below explains this curing process and also gives some insight on the proper operation of this stove. The Kuuma wood burning stoves are unique in their design by providing an air carburetor to help provide the precise air control for maximum efficiency and to provide a unique front to back burn. You will see very little smoke emitting from the chimney of a Kuuma sauna stove once the fire is burning well because they burn the wood so efficiently.
I had purchased an attic insulation barrier but it proved to be too long for this application so I returned it. In its place, I totally enclosed the space where the chimney would be routed through the attic area with sheet metal from the sauna ceiling to the bottom of the sauna roof. This protection prevents any insulation or combustible materials from coming into contact with the chimney system.
6" diameter double wall (black aluminized enamel pipe on the outside and stainless steel pipe on the inside) stove pipe extends from the stove to the ceiling. Each pipe section is secured with 3 screws. At the ceiling, a decorative cover which is securely attached to the ceiling joists, supports the Class A chimney above.
A 6" diameter Class A chimney system is a double wall insulated chimney pipe that allows a 2 inch clearance from combustible materials. A 12 inch oval hole was cut into the roof to provide the necessary clearance from the now 8 inch diameter chimney pipe. A sheet metal boot was installed into the roof shingles where the Class A chimney exits the sauna roof. The chimney extends to about 4 feet above the chimney roof and ends with a rain cap and spark arrester screen.
This chimney system was expensive but it is a safe and durable system.