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Heater buildout

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.

5.0 on Google across 80+ verified reviews

Member pricing is quoted directly with a specialist, and specifications and availability are confirmed on the same call.

Image: Harvia

Heater buildout

What’s in this buildout

A heater never arrives on its own. The buildout is everything it needs to heat a room.

Image: Harvia
  • 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.

The build

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.

A barrel sauna half built in a sunny backyard, one man standing inside the waist-high walls and pointing toward the camera while a second, in a cap and sunglasses, looks over the far wall.
Site work. Longmont, Colorado.
A barrel sauna part way through assembly on its cradles, the floor laid and the front wall standing, with the remaining staves stacked on the patio alongside.
Barrel sauna, mid-assembly. Colorado.
The detail

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.

Questions

Questions about the Harvia M3 Wood Sauna Stove.

What you are covered for

The standard behind it.

The Sauna Friend Standard

What comes with every sanctuary we build.

  • Sanctuary Builders
  • Sanctuary Approved
  • Local Service Guarantee

Reviewed by homeowners

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)
Talk to us

Four ways in. Pick the one that fits.

For instant answers

Call or text 720.780.4400

Texts start with Jarvis, our trained AI, for instant answers. Ask for a person any time.

A detailed answer

Request member pricing

Tell us about the build. We send a detailed quote within one business day, with our Sauna Prep Checklist.

Request member pricing
A conversation

Schedule 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)
Questions

Email us

Questions on buildouts, electrical coordination, or timing. We read every message and reply.

support@saunafriend.com
We represent you, not the manufacturers.

Create Sanctuary.
Live Regenerated.

5.0 on Google across 80+ verified reviews

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Harvia M3 wood sauna stove in graphite black with a stainless front panel, stones on top and a glass door, studio shot on white

Harvia M3 Wood Sauna Stove

Image: Harvia