Harvia M3 Wood Fired Sauna Stove

6 reviews

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.

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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Brand Catalog: Harvia
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 accessories

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.
Add to cart

Harvia M3 Protective Bedding, Black

Harvia Protective Bedding Fits Nearly All Harvia Stoves from M1 to Harvia Legend.
Add to cart
The Harvia M3 has a great floor mounting system for mobile saunas, and added safety.

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.

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.  

6 reviews for Harvia M3 Wood Fired Sauna Stove

  1. Verified owner Cameron Lakatos (verified owner)

    (1) (0)
  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
    (1) (0)
  3. Verified owner Chad S. (verified owner)

    (0) (0)
  4. Verified owner MATTHEW (verified owner)

    (0) (0)
  5. Verified owner Thomas Haskin (verified owner)

    usCalifornia, United States

    (1) (0)
  6. Cam

    My family is loving the Harvia M3, heat shield and stones! It was an absolute pleasure doing business with you! On top of the most competitive price, everything arrived on time and was in perfect condition.

    Here’s a couple pics of my build. I built a mobile sauna (using old camper running gear) as I wanted the flexibility to use it at home and at recreational property I have near by. Dimensions are roughly 7×10 including a small changing room. The interior is all local Michigan white cedar.

    The Harvia stove combined with heat shield allowed me to maximize my space and heats up the sauna very quickly.

    It was a great project for me and my boys which we wouldn’t be able to afford as quickly without your help.

    Image #1 from Cam
    Image #2 from Cam
    Image #3 from Cam
    (3) (0)

Only logged in customers who have purchased this product may leave a review.


Shipping Countries: Canada

Shipping States: Missouri (United States (US)), South Carolina (United States (US)), Idaho (United States (US)), Montana (United States (US)), Nebraska (United States (US)), Tennessee (United States (US)), Texas (United States (US)), Illinois (United States (US)), Indiana (United States (US)), New Hampshire (United States (US)), New Jersey (United States (US)), Utah (United States (US)), Virginia (United States (US)), Kansas (United States (US)), Kentucky (United States (US)), New Mexico (United States (US)), North Carolina (United States (US)), Washington (United States (US)), West Virginia (United States (US)), Arizona (United States (US)), Arkansas (United States (US)), Louisiana (United States (US)), Maryland (United States (US)), North Dakota (United States (US)), Ohio (United States (US)), Wyoming (United States (US)), California (United States (US)), Connecticut (United States (US)), Massachusetts (United States (US)), Michigan (United States (US)), Oregon (United States (US)), Hawaii (United States (US)), Delaware (United States (US)), Mississippi (United States (US)), Pennsylvania (United States (US)), Rhode Island (United States (US)), District Of Columbia (United States (US)), Georgia (United States (US)), South Dakota (United States (US)), Nevada (United States (US)), Vermont (United States (US)), Iowa (United States (US)), New York (United States (US)), Maine (United States (US)), Wisconsin (United States (US)), Colorado (United States (US)), Oklahoma (United States (US)), Minnesota (United States (US)), Florida (United States (US)), Alabama (United States (US))

Ready to ship in 3-5 business days


Shipping Policy

Most orders are processed with FedEx. We have various shipping partners for larger freight / LTL orders. They will be responsible for delivering curbside. You may need to meet them for delivery. If you do not have access for a semi-truck delivery, you will be required to make other arrangements. Additional shipping expenses may occur in some locations. Canadian customers are responsible for duties and taxes. Please make a note of your broker of choice for processing the shipment. Shipping delays do happen, and timelines are never guaranteed.

Additional information
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)




Height (mm)





Stainless Steel

Q & A

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About Harvia
Harvia PLC is a globally recognized company renowned for its top-tier sauna heaters and accessories. Established in 1950 in Finland, Harvia is a true testament to Finnish sauna culture, being a part of many homes and wellness spaces worldwide. The company has steadily evolved, emerging as a market leader in the sauna and spa industry. Harvia boasts a comprehensive portfolio of products that cater to a diverse range of preferences and requirements. The company has gained significant traction in the United States (with the help of Costco) with its unique offering of sauna heaters and barrel saunas under the Almost Heaven brand. Harvia's barrel saunas are a highlight in the American market, providing an authentic and immersive sauna experience. These saunas, known for their distinct cylindrical design and excellent heat circulation, are an ideal addition to any home, gym, or wellness center. Furthermore, Harvia's wide range of heater models in the U.S. contributes to its strong market presence. Their heaters are designed with meticulous attention to detail, ensuring optimal performance, longevity, and safety. The Harvia Forte, for instance, is an always-ready ready electric sauna heater that stores enough heat for spontaneous and frequent home use. The Harvia KIP heater, on the other hand, is the most copied heater in history. The Harvia Cilindro heater stands out for its unique design, which allows many stones to be placed in close contact with the heating elements. For those who prefer a classic, wood-burning sauna, the Harvia Legend series provides an exceptional choice. The wood used in these heaters gives the sauna an enchanting, traditional feel, and provides soft, relaxing heat. As we've seen firsthand at Sauna Marketplace - Harvia's business performance in North America has shown robust growth in recent years. In the first quarter of 2023, the company's revenue from North America saw a substantial increase of 15.8%, a clear testament to Harvia's growing popularity and acceptance among American sauna enthusiasts. Through its relentless dedication to quality, innovation, and the authentic Finnish sauna experience, Harvia continues to strengthen its leading position in the global sauna and spa market. Whether you're an individual looking to enhance your wellness journey, or a business seeking the best in sauna solutions, Harvia has established itself as a reliable and superior choice.
In Action

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







M3 Reviews
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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.
Read More
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.
Brand Catalog: Harvia