All configurations
Included with purchase
Sauna stove, stove door, ash box, installation and operation manual.
Required separately
66 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.
Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.
We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.
Sauna and heater customers also receive free shipping on sauna accessories for life.
Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.
Sauna stove, stove door, ash box, installation and operation manual.
66 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Contents vary by configuration. Check the row for the option selected above.
| Brand | Harvia |
|---|---|
| Catalog Product | Harvia M3 Wood Fired Sauna Stove |
| Heater Type | Wood-burning sauna stove |
| Model Number | M3 |
| SKU / Part Number | WKM3 |
| Maximum Room Volume | 459 ft³ |
|---|---|
| Minimum Room Volume | 212 ft³ |
| Rated Power | 16.5 kW |
|---|
| Minimum Host-Room Height | 78.74 in |
|---|---|
| Product Weight | 99.2 lbs |
| Stone Capacity | 66 lbs |
|---|
| Ceiling-Clearance Reference Height Above Finished Floor | 27.95 in |
|---|---|
| Ceiling-Clearance Reference Plane | Stove Top |
| Front Clearance | 11.81 in |
| Rear Clearance | 11.81 in |
| Left-Side Clearance | 9.84 in |
| Right-Side Clearance | 9.84 in |
| Included Components | Sauna Stove, Stove Door, Ash Box, Installation and Operation Manual, 2-Year Limited Warranty (Consumer Use) and 6-Month Limited Warranty (Commercial Use) |
|---|---|
| Required, Not Included | 66 lbs of Split-Face Sauna Stones (Qty 2 x 44 lbs of 4 to 6 in stones) |
| Certifications & Listings | CE, EAC |
|---|
Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.
A wood-burning sauna heater that heats the room and stone mass for traditional löyly. Treat the stove, chimney, floor protection, clearances, combustion air, ventilation, and stones as one installation system.
Complete the system with these items.
Model-specific replacements and compatible system components.
Optional upgrades and accessories.
Compare these options; sizing, power, controls, clearances, and stones may differ.
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.
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.
$969.00
Buy Now, Pay Later with premium financing packages only available on Sauna Marketplace.
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.
Yes, but the Harvia Protective Bedding must be used.
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. 0.4 in. 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.
The adjustable legs enable the stove to be installed firmly on an inclined floor. The adjustable range is 0–1.2 in. Unscrew the adjustable feet to an extent that allows them to be adjusted using a wrench (0.7 in) when the stove is in position.
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.
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.
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.
To combustible surfaces, without protective shield
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:
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.

Harvia has some of the best manufacturing and quality control processes on the market. With a wood stove, it really matters.
A truly legendary wood burning sauna, that sets the global standard for smaller saunas. The Legend 150 is equipped with a cast iron glass door, adjustable legs, and an innovative structure that separates the combustion air creating a more efficient burn.
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.
The Harvia Pro Series is the value line for medium saunas. While most default to the popular Harvia M3, the Pro line is larger and has options like built in water tanks (ES), through-wall feed (SL), and designed for easy maintenance and cleaning. The Pro Series can also be paired with an in-chimney water heater, and has great short clearances when paired with the surround and floor protector. The Harvia Pro Series has fewer stones so it heats faster than rock basket heaters, but will not provide as ‘soft’ of a heat as something like a Harvia Legend.
The Harvia Pro comes in three sizes (20, 26, 36) for small and medium saunas.
This is our go-to recommendation for both commercial saunas and large home saunas where reliability, safety, and everyday performance are essential. With a sleek black outer shell, easy maintenance access, and extended Harvia warranty this heater will keep your people coming back for more. Have an even larger commercial sauna? Double or triple up on this heater for any space. Like all Harvia Virta or Club models, maintenance and serviceability are unrivaled.
Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.
Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.
We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.
Sauna and heater customers also receive free shipping on sauna accessories for life.
Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.
Sauna stove, stove door, ash box, installation and operation manual.
66 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Contents vary by configuration. Check the row for the option selected above.
| Brand | Harvia |
|---|---|
| Catalog Product | Harvia M3 Wood Fired Sauna Stove |
| Heater Type | Wood-burning sauna stove |
| Model Number | M3 |
| SKU / Part Number | WKM3 |
| Maximum Room Volume | 459 ft³ |
|---|---|
| Minimum Room Volume | 212 ft³ |
| Rated Power | 16.5 kW |
|---|
| Minimum Host-Room Height | 78.74 in |
|---|---|
| Product Weight | 99.2 lbs |
| Stone Capacity | 66 lbs |
|---|
| Ceiling-Clearance Reference Height Above Finished Floor | 27.95 in |
|---|---|
| Ceiling-Clearance Reference Plane | Stove Top |
| Front Clearance | 11.81 in |
| Rear Clearance | 11.81 in |
| Left-Side Clearance | 9.84 in |
| Right-Side Clearance | 9.84 in |
| Included Components | Sauna Stove, Stove Door, Ash Box, Installation and Operation Manual, 2-Year Limited Warranty (Consumer Use) and 6-Month Limited Warranty (Commercial Use) |
|---|---|
| Required, Not Included | 66 lbs of Split-Face Sauna Stones (Qty 2 x 44 lbs of 4 to 6 in stones) |
| Certifications & Listings | CE, EAC |
|---|
Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.
A wood-burning sauna heater that heats the room and stone mass for traditional löyly. Treat the stove, chimney, floor protection, clearances, combustion air, ventilation, and stones as one installation system.
Complete the system with these items.
Model-specific replacements and compatible system components.
Optional upgrades and accessories.
Compare these options; sizing, power, controls, clearances, and stones may differ.
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.
PLAN THE WHOLE SAUNA
Start with the room dimensions, then account for glass, masonry, insulation, ceiling height, required clearances, and available electrical service. That is how we move from a product that looks right to a sauna that heats evenly and comfortably.
See electric sauna heaters by output, stone mass, control style, and installation type. Size from adjusted room volume, not floor dimensions alone.
Shop sauna heaters →Explore indoor and outdoor saunas when you are planning beyond one component. Starting with the room makes heater size, controls, and accessories easier to get right.
Explore complete saunas →Local Bench Time and Sales