Harvia M3 Wood Sauna Stove
The Harvia M3 is a compact wood stove for a small to medium sauna. It comes as the front fed M3 or the M3 SL, which you feed from the next room.
Member pricing is quoted directly with a specialist, and specifications and availability are confirmed on the same call.
Image: Harvia
What’s in this buildout
A heater never arrives on its own. The buildout is everything it needs to heat a room.
The stove
Harvia M3, in the version your room calls for.
Chimney kit
Professionally installed.
Sauna stones
Included and required.
Sizing is matched to your sauna in consultation.
What we handle
We source quality products that we stand behind, for you, not for the brand, and we build the room around them.
Site preparation
Placement in the room, following the manufacturer's specification.
Delivery and placement
Freight coordination to your site, and the stove placed in the room it heats.
Assembly
Installed as part of the sauna build, with the stones loaded.
Protection
Guards and clearances set at install and checked when we come back.
Support after the build
Service and guidance after the build, from someone who picks up the phone in year three.


What we can put in writing.
Anything not listed here is confirmed with you during the consultation rather than published as a guess.
- Exterior dimensions
- 15.4"W x 16.9"D x 28.15"H
- Family
- Harvia M Series
- Configurations
- M3 (Front fed floor stove), M3 SL (Fed through the wall from the next room, with a fire chamber extension)
- Fuel
- Wood
- Feeding
- Front fed, or through the wall on the M3 SL
- Room volume
- 212 to 459 cu. ft.
- Sauna stones
- 66 lbs
- Made in
- Finland
- Installation
- Floor
- Firewood diameter
- 3 to 6" (8 to 15 cm)
- M3 size
- 15.4"W x 16.9"D x 28.15"H (39 x 43 x 72 cm)
- M3 weight
- 99.2 lbs (45 kg); shipping weight with stones 165.3 lbs (75 kg)
- M3 maximum firewood length
- 14" (35 cm)
- M3 flue connection
- Top and back
- M3 finish
- Graphite black with a stainless steel air flow spoiler
- M3 SL size
- 15.3"W x 25"D x 28"H (390 x 640 x 715 mm)
- M3 SL weight
- 105.8 lbs (48 kg); shipping weight with stones 172 lbs (78 kg)
- M3 SL feeding
- Through the wall, from the next room
- M3 SL door
- Cast iron framed glass door
- M3 SL maximum firewood length
- 13.7" (350 mm)
- M3 SL minimum room height
- 75.4" (1915 mm)
- M3 SL flue connection
- Upper connection opening
What sets it apart
- Compact graphite black steel stove for a small to medium sauna
- Stainless steel air flow spoiler
- Stone compartment holding 66 lbs of sauna stones
- Flue connects at the top or the back on the M3
- The M3 can take a pipe style water heater
- The M3 SL is fed through the wall, with a fire chamber extension and a cast iron framed glass door
- Soot opening for cleaning on the M3 SL
- Designed and made in Finland
In the kit from the maker
- Sauna stove
- Stove door
- Ash box
- Installation and operation manual
- Fire chamber extension (M3 SL)
About this buildout.
The M3 is a graphite black steel stove with a stainless steel air flow spoiler, set on the floor and fed from the front. It takes 66 lbs of sauna stones, connects to the flue at the top or the back, and can take a pipe style water heater.
The M3 SL is the through the wall version. The stove sits in the sauna and its fire chamber extension passes through the wall, so firewood goes in from the room next door, where the fire shows behind a cast iron framed glass door.
Harvia lists both for a room volume of 212 to 459 cu. ft.
Related buildouts.
Every buildout we offer
Harvia KIP Sauna Heater
Heater buildout: KIP Series sauna heater
See this buildout
Harvia 50 Wood Sauna Stove
Heater buildout: 50 Series sauna heater
See this buildout
Harvia Cilindro Wood Sauna Stove
Heater buildout: Cilindro Series sauna heater
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Harvia Legend 150 Wood Sauna Stove
Heater buildout: Legend Series sauna heater
See this buildoutQuestions about the Harvia M3 Wood Sauna Stove.
The standard behind it.
What comes with every sanctuary we build.
- Sanctuary Builders
- Sanctuary Approved
- Local Service Guarantee
Read what they say about the build.
5.0 on Google across 80+ verified reviews. Each review below links to the original on Google.
“David, the owner, worked with us to get a high quality sauna. David is very responsive, knowledgeable, honest and responsive. He will have your sauna delivered to your home. He will then assemble the sauna and remove all the packaging. I highly recommend purchasing a sauna from Sauna Friend.”
Dennis DonovanFort Collins, CORead it on Google (opens in a new tab) “Sauna Friends were exceptional! They fixed my sauna door, added flashing, and reinstalled my sauna roof. I looked for sauna-specific professionals to do these repairs so I could be confident they'd know what they're doing, and they did.”
Jessmine AndersonColoradoRead it on Google (opens in a new tab) “Worthy of 10 stars! Went above and beyond to ensure we had full understanding in everything: the sauna we purchased, the ordering, delivery, and setup. Absolutely love our sauna and worth every penny. David was incredibly knowledgeable and went out of his way to over-deliver. Highly recommend working with David!”
Nicholas LoscalzoColoradoRead it on Google (opens in a new tab)
Four ways in. Pick the one that fits.
Call or text 720.780.4400
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Request member pricing
Tell us about the build. We send a detailed quote within one business day, with our Sauna Prep Checklist.
Request member pricingSchedule a 15-minute call with David
For builds that need more than a form can capture. We talk through the space and the plan.
Schedule a call (opens in a new tab)Email us
Questions on buildouts, electrical coordination, or timing. We read every message and reply.
support@saunafriend.comCreate Sanctuary.
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5.0 on Google across 80+ verified reviews

