Harvia M3 Wood Fired Sauna Stove

(3 customer reviews)

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GTIN: 6417659009423
Brand: Harvia

Experience the gold standard in sauna performance with the Harvia M3 Wood Fired Sauna Stove. This stove is designed to be durable, energy-efficient, and reliable, with a sleek and modern look that adds to the beauty of your sauna.  It won’t take long to see why the M3 is the best selling sauna stove in the world.

And Sauna Marketplace offers fast, reliable shipping and complete package customization so you have exactly what you need.  Harvia M3s are in stock and shipping out daily.  Order yours today.


All Harvia wood-burning sauna stoves are equipped with standard European exhaust piping that measures at 115mm (4.5″). This adapter is required for North American 155 mm (6″) piping conversion.

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Harvia M3 Series 16.5kW Wood Sauna Stove

Classically stylish in its design, the Harvia M3 wood-burning sauna stove is engineered for small wood-fired saunas. The large stone capacity gives off and even heat and its efficient air circulation guarantee a pleasant and relaxing sauna experience. The Harvia M3 stove features a glass door, enabling the glowing fire for a traditional sauna ambience. This graphite black and stainless steel sauna stove is an industry best seller.
What's in the box?

Sauna stove, Upper/Rear connections, Soot opening, Stove door, Ash box, Installation and Operation manual, 2-year warranty (Consumer use)

What kind of certifications doest it have?
Can the Harvia M3 be connected to a masonry chimney?

Yes, the M3 has rear and upper connection options, and can be tied into an existing masonry chimney in good condition.    You will likely want and need a chimney liner if you don't already have one - consult your local building department.  

Can you install this on a wood floor?

Yes, but the Harvia Protective Bedding must be used.

Can it be connected to a masonry chimney?

Make an opening in the fireproof wall for the flue connection. Notice that the opening has to be at the correct height, if you intend to use, for instance, a protective bedding. The hole should be slightly larger than the flue connecting pipe. A suitable gap around the connection pipe is ca. 10 mm. It is advisable to round off the inner corners of the flue opening to ensure that the combustion gases can flow freely to the flue.  

Refer to manual for instructions on connecting to top of M3 to chimney.

Can it be installed on an uneven floor?

The adjustable legs enable the stove to be installed firmly on an inclined floor. The adjustable range is 0–30 mm. Unscrew the adjustable feet to an extent that allows them to be adjusted using a wrench (17 mm) when the stove is in position.

Do I need to preburn outside the sauna first?

Yes, as with all wood burning sauna stoves you should set it up outside on a calm day and 'preburn' to cure the paint until you can't smell any odors.  Timing will depend on how hot you get it, but we like to get a good burn going for 4 hours before installing.  Be sure to let the stove cool off before installation, preferably overnight.

Does it need a vent? Where?

Yes, all wood stoves require ventilation for proper combustion.  Harvia recommends an intake vent behind stove, very low on the wall and a exhaust vent high on the opposite wall.

Harvia Chimney Kit in Black or Stainless Steel - WHP1500m

Contains black powder coated (or stainless steel) chimney, utility box, non-insulated smoke pipe, rain cap, rubber rain flange, installation set for rain flange, stainless steel lead-through flange for ceiling, lead-through insulation and protector, installation manual.
Select options

B. Water heater VL22l

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Harvia WL450 - Protective Shield for M1, M2, M3, and M3 SL

The Harvia Protective sheath for M1, M2, and M3 wood burning sauna heaters, including SL models.  Allows lower clearances and better protection from combustable building materials.  A protective shield is almost always a good idea for a safer sauna experience.
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Harvia M3 Protective Bedding, Black

Harvia Protective Bedding Fits Nearly All Harvia Stoves from M1 to Harvia Legend.
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Floor Mounted

The Harvia M3 has a great floor mounting system for mobile saunas, and added safety.

Black steel frame



Ideal in small sized Saunas

66 lb stone capacity (requires 2 boxes sold separately)

Designed, engineer and made in Finland

Dimensions; 15"W (390mm) x 18"D (450mm) x 28"H (710mm)

For sauna rooms from 211-459 CU. FT

2-year warranty (Consumer use)



Harvia M3 Clearances

To combustible surfaces, without protective shield

B. 250 mm

C. 300 mm

D. 300 mm

Who's it for?

The M3 is perfect for any small, wood-burning sauna that wants a mountable stove. This makes it a great candidate for mobile saunas, or saunas with slanted floors. It has the lowest clearance of any Harvia wood burning stove, so it's perfect for saunas where space is at a premium.

Our Harvia M3 Review

If you’re looking for a wood-burning sauna stove with a classic look and modern elements, look no further. It’s popular in mobile saunas and barrel saunas, and it’s very easy to find the Harvia M3 for sale in most countries.

You can see it in action, or even try it out on SaunaShare.com where it’s one of the most popular sauna stoves for small public saunas and mobile sauna trailers.

In addition to mobile saunas, the Harvia M3 is suitable for small to medium indoor saunas that have a suitable to send the chimney up through the roof, outdoor barrel saunas, and outdoor shed style saunas.

It’s inexpensive but doesn’t look or feel like a cheap heater.

It’s our understanding that the Harvia M3 is still designed and manufactured in Finland, using high quality materials.

Note that if you are not cutting your own wood you will have to get it cut to a certain size, which can be expensive or impossible. The maximum logs that fit in the M3 are 6″ diameter and 13 3/4″ long.

If that’s an issue, use the Sauna Marketplace stove finder to dial in a heater that works best for you.  Find our full ranking of the best wood burning sauna stoves here.

At a Glance:

  • Glass Door
  • Inside Feed
  • Small to Medium Saunas

The even heat and efficient air circulation guarantee an enjoyable experience. The Harvia M3 comes equipped with a glass door, allowing the warm glow of the fire to complement the sauna atmosphere.

The color of the stove is elegant graphite black and it has a stainless steel air-flow spoiler. The M3 stove can be equipped with a pipe model water heater.

Harvia M3 Installation

Installing the Harvia M3 is as easy as any wood sauna stove – especially if using the matching components from Harvia Global.

There are more YouTube unboxing videos of people installing a Harvia M3 than any other stove, but make sure to check out the Harvia M3 manual for the best information about clearances and other safety considerations.  



Made in

Wood feed Wood stoves can accept wood from the interior or exterior of the hot room. Exterior feed sauna stoves have a door that opens to the exterior or changing room. The heater is essentially built through the wall.

For Saunas Smaller Than (m3)


Stone capacity (kg)


Max firewood (mm)




Clearance back (mm)


Clearance sides (mm)


Flue (mm)


Weight (kg)


Width (mm)


Depth (mm)


Height (mm)




For Saunas Larger Than (m3)



Stainless Steel

Manual, Catalog, And More Details

Customer Reviews

3 reviews for Harvia M3 Wood Fired Sauna Stove

Based on 3 reviews
5 star
4 star
3 star
2 star
1 star
  1. Verified owner Cameron Lakatos (verified owner)

  2. Verified owner Tyler Wingerson (verified owner)

    Very happy with the M3. First off Ben did a great job answering all of my questions and walking me thru the best stove selection for my build. Shipping was fast and painless. The stove takes 30 minutes to heat up and doesn’t use as much wood as I imagined. I also purchased the heat shield for clearance and with the help of a friend install was quick and easy. I wouldn’t hesitate to work with Ben from sauna market place again. Cheers!

    Image #1 from Tyler Wingerson
    Image #2 from Tyler Wingerson
  3. Verified owner Chad S. (verified owner)

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The Harvia M3 is one of the most common wood burning stoves in mobile sauna rentals on SaunaShare.  You can buy it anywhere in the world, it's lightweight, dependable, and easy to instal.

The M3 is the perfect size for most mobile saunas. Click link for more information on the sauna, and to try the M3 before buying one. Sauna rental companies also like the add ons like water heater, and heat shields for minimal clearances.

Badstuvogna uses the M3 in all their mobile saunas.

M3 at a sauna rental by the sea from Badstuvogna

M3 in the Tonde Barrel Sauna by Heatwave, a sauna rental company in Denmark

Sauna with an m3 wood burning stove in the corner

The Finnish Sauna in BC

An M3 in a horse trailer sauna in Bend Oregon from Gather Sauna House

Close up of a m3 in a mobile sauna in Duluth built by BW Saunas

M3 in Door County, Wisconsin - in a Barrel Sauna available for rent from Up North Saunas

M3 in High Heat Mobile Sauna in Columbus OH


Product Location

Chicago, IL, USA
Read More
We also purchased the Harvia M3 with a stainless steel chimney kit. While my husband and I are both pretty good mechanically, for the life of us can’t get the stovepipe put together correctly. The instructions weren’t included and what Harvia has online is pretty meager at best. The sauna manufacturer, sadly, also needs a bit of a clean-up on their instructions.
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We have a simple barrel sauna with a Harvia M3 stove. We are happy with everything about it…except…the flimsy wire hinge on the stove door. It is literally a thin piece of wire. Eventually the door is going to fall off and the glass will break.
Read More
We recently constructed our barrel sauna from Dundalk. We also purchased the Harvia M3 with a stainless steel chimney kit. While my husband and I are both pretty good mechanically, for the life of us can’t get the stovepipe put together correctly.

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