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Where can I find the manual?
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. Â
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. Â
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
$1,183.50 – $1,256.40
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.
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.
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.
Verified owner Cameron Lakatos (verified owner) –
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!
Verified owner Chad S. (verified owner) –
Verified owner MATTHEW (verified owner) –
Verified owner Thomas Haskin (verified owner) –
California, United States
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.