Best Wood Burning Sauna Stoves for a Backyard Sauna
The stove decides how your backyard sauna feels. A good wood burner gives you that soft, rolling heat and a big hiss of steam when you toss water on the rocks.
Most of the picks below come from Harvia, the Finnish company that makes a huge share of the world's sauna heaters. We also included a lower cost wood stove that ships with its chimney, an electric option for anyone who would rather flip a switch, and the stones that make the steam.
Match the heater to your sauna's cubic footage first. An undersized stove struggles on a January night, and an oversized one is hard to keep comfortable.
Best for Small Saunas: Harvia M3
The Harvia M3 is the classic starter wood stove for a small barrel or cabin sauna. It is compact, simple to run, and has a long track record in home saunas.
A small sauna heats faster and uses less wood, and the M3 is built for exactly that size. If your sauna seats two to four people, this is the one most owners end up with.
Pair it with a proper chimney kit and keep the required clearances to the wood walls. That part is not optional.
Harvia M3 Woodburning Sauna Heater
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1,000+ reviews
A compact, proven wood burning stove sized for small home and barrel saunas.
Shop on Amazon →Best for Steam Lovers: Harvia Legend 16kW
The Legend is the stove you buy for the steam. It is cast iron with a large open rock basket, so it holds a lot of stones and throws soft, long lasting heat after the fire dies down.
At 16kW it suits a medium sauna that seats a family or a group of friends. It also looks great, with a rugged old world style that becomes the centerpiece of the room.
Cast iron is heavy, so plan on two people to move it into place.
Harvia Legend Wood Burning Sauna Stove Cast Iron 16kW
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1,000+ reviews
A cast iron wood stove with a big stone basket for deep, steamy heat in medium size saunas.
Shop on Amazon →Best for Large Saunas: Harvia Pro 20
If you are building a larger sauna or one with lots of glass, the Harvia Pro 20 has the muscle. It is rated at 24kW and built from stainless steel.
More power means faster warm ups on cold days, which matters when the sauna sits outside in freezing temperatures all winter.
Check your room size before choosing it. In a small sauna a heater this strong is more than you need.
Harvia Pro 20 Wood Burning Sauna Heater Stainless Steel 24kW
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1,000+ reviews
A powerful stainless wood stove for large saunas and rooms that lose heat through glass.
Shop on Amazon →Quick Tips for Wood Burning Sauna Stoves
- Size by volume. Measure your sauna's length, width, and height and compare the cubic footage to the heater's rating before you buy.
- Respect clearances. Every stove lists minimum distances to walls and benches. Follow them exactly and add heat shields where the manual calls for them.
- Use dry hardwood. Seasoned hardwood heats faster with less smoke and less creosote in the chimney.
- Clean the chimney yearly. Inspect and sweep the flue at least once a season, and more often if you use the sauna daily.
Best Value With Chimney Included: ALEKO Wood Burning Sauna Heater
ALEKO's wood burning heater comes bundled with a chimney kit, which saves you from piecing together flue parts separately. It is rated as equivalent to a 9 to 15 kW electric heater and has a large stone capacity.
That makes it a good fit for a DIY sauna build where you want one box with most of what you need.
Read the clearance and installation guide closely before you cut a roof hole, and check your local fire codes.
ALEKO Wood Burning Sauna Heater and Chimney Kit
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1,000+ reviews
A wood sauna stove bundled with its chimney kit and a large rock capacity for DIY sauna builds.
Shop on Amazon →Best Electric Alternative: Harvia KIP 8kW
Not everyone wants to split wood before a sauna session. The Harvia KIP is a wall mounted electric heater with simple dial controls, and it runs on a 220 to 240V circuit.
Electric heat is easier on a weeknight. You set the dial, and the sauna is ready when you are.
Have an electrician confirm your panel can handle it before you order.
Harvia KIP Wall Mount Electric Sauna Heater 8kW
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1,000+ reviews
A wall mounted electric sauna heater with easy dial controls for no fuss sessions.
Shop on Amazon →Best Sauna Stones: Northwood Sauna Diabase Stones
Stones are what turn heat into steam. Northwood's diabase rocks come in a 45 pound box of 2 to 4 inch stones, which works for both wood and electric heaters.
Diabase is dense and holds heat well, so you get better steam with each ladle of water.
Rinse new stones before loading them and replace any that crack over time.
Northwood Sauna Diabase Sauna Stones 45 lb
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1,000+ reviews
Dense diabase heater rocks in a 45 pound box for strong, steady steam.
Shop on Amazon →Frequently Asked Questions
How long does a wood burning sauna take to heat up?
Most backyard saunas reach a comfortable temperature in about 45 minutes to an hour with a properly sized stove. Very cold weather and larger rooms take longer.
Is a wood burning or electric sauna heater better?
Wood gives a classic, softer heat and works without power, which suits off grid or detached saunas. Electric is more convenient for frequent short sessions.
Do I need a permit for a wood burning sauna?
It depends on where you live. Many towns treat a wood stove and chimney like any other solid fuel appliance, so check with your local building or fire department before installing.
What size sauna stove do I need?
Match the heater's rated room volume to your sauna's cubic footage. Add some capacity if your sauna has glass doors or windows, since glass loses heat faster than wood walls.