Expert help that stays with you

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.

Includes

What Is Included

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).

Contents vary by configuration. Check the row for the option selected above.

Technical Specifications

Technical Specifications

Model & Application

Model & Application
Brand

Harvia

Catalog Product

Harvia M3 Wood Fired Sauna Stove

Heater Type

Wood-burning sauna stove

Model Number

M3

SKU / Part Number

WKM3

Sauna Sizing

Sauna Sizing
Maximum Room Volume

459 ft³

Minimum Room Volume

212 ft³

Electrical

Electrical
Rated Power

16.5 kW

Dimensions & Weight

Dimensions & Weight
Minimum Host-Room Height

78.74 in

Product Weight

99.2 lbs

Stone Capacity & Performance

Stone Capacity & Performance
Stone Capacity

66 lbs

Installation Clearances

Installation Clearances
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 & Required

Included & Required
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

Certifications
Certifications & Listings

CE, EAC

Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.

How It Fits

How This Product Fits the System

What it is used for

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.

What to plan

  • Size from adjusted sauna volume, including the effect of glass, masonry, and other uninsulated surfaces; do not size from floor area alone.
  • Match the selected model's power or fuel, voltage, phase, circuit, wire, control, stone, and venting requirements before ordering.
  • Treat clearances, ceiling reference planes, ventilation, guarding, floor protection, and service access as one room-layout decision.
  • Follow the current installation manual and use a qualified installer.

Required separately

Complete the system with these items.

Designed to work with

Model-specific replacements and compatible system components.

Optional accessories

Optional upgrades and accessories.

Other heater options

Compare these options; sizing, power, controls, clearances, and stones may differ.

Attachments
Gallery
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
Becky
Becky
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.
Deb
Deb
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.
Becky
Becky
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.

Harvia M3 Wood Fired Sauna Stove

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.

Build Your Quote:

$969.00

Will you feed the firewood inside the hot room, or through a wall?
None Inside Feed (M3) Outside Feed (M3 SL) +$433.00
Add Pipe Adaptor

Harvia wood-burning stoves come out of the box with 4.5 in European flue pipe. North American chimney parts are 6 in, so you need this adapter to join the two. Add it here if you are running the stove into a US chimney.

None Add 4.5" Euro to 6" USA Pipe Adapter +$98.00
Chimney Kit
None Harvia WHP1500 Stainless Steel Chimney Kit for M3 +$1,255.00 Harvia WHP1500m Black Chimney Kit for M3 +$1,332.00
Add Stones
None 2 Boxes of Harvia Sauna Stones (44 lbs each) +$120.00
Add Floor Fire Protection
None Add WL100 Protective Bedding +$309.00
Add Wall Fire Protection for Tighter Clearances
None Harvia M3 Protective Sheath - WL450 +$345.00
Water Heater
None Harvia M3 Water Heater Built Into Chimney +$571.50

Share your selected heater size and add-ons. Prices and availability are confirmed when the link is opened.

Zero Interest Payments:

Buy Now, Pay Later with premium financing packages only available on Sauna Marketplace.

Pay with HSA/FSA:

We teamed up with FLEX to make HSA/FSA payments easier than ever.

Virtual Tour

 

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. 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.

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 0–1.2 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.

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 - WHP4921.3 ft

Price range: $1,487.00 through $1,578.00
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

Buy on Ebay

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

$409.00

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

$404.00
Harvia Protective Bedding Fits Nearly All Harvia Stoves from M1 to Harvia Legend.
Add to cart

Harvia M3 Clearances

To combustible surfaces, without protective shield

B. 9.8 in

C. 11.8 in

D. 11.8 in

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.  


how harvia wood stoves are made

Made With Care

Harvia has some of the best manufacturing and quality control processes on the market. With a wood stove, it really matters.

Harvia makes a wood-fired sauna stove for every home.

Harvia Heater Sizes

Harvia Legend 150

$2,089.00

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.

Add to cart

Harvia Linear 16

$961.00
The Linear 16 wood-burning sauna stove is source of glowing heat for smaller saunas. Through the warm glow of the cast-iron glass door, with optional door direction, the fire enhances the sauna atmosphere. The fire chamber and combustion air channels of Harvia wood burning heaters are designed so that sauna warms quickly and the burning is cleaner.
Add to cart

Harvia Linear 22 GreenFlame

$2,464.00
Greenflame is Harvia's environmentally friendly, wood-burning sauna heater. The Greenflame reduces fine particulate emissions by 20 percent, and carbon monoxide emissions by 70 percent compared to similar models. The large glass hatch of the heater enhances the ambiance while the advanced sauna burning technology and durable construction ensure a more reliable and responsible sauna for years to come.
Add to cart

Harvia M3 Wood Fired Sauna Stove

$969.00

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.

Add to cart

Harvia Pro Series

Price range: $1,559.00 through $2,364.00

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.

Select options

Harvia Virta Pro 16 | 240V Single‑Phase Commercial Sauna Heater

$3,736.00

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.

Add to cart

Harvia Legend 240 GreenFlame

$2,859.00
The impressive Harvia GreenFlame 240 is ideal for medium sized saunas, up to 848 cu. ft., with a large glass door for you to get lost in the tranquility of the flames. Not only impressive in looks the Harvia GreenFlame 240 is durable, easy-to-use, and has 70% lower carbon monoxide emissions.
Add to cart
Expert help that stays with you

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.

Includes

What Is Included

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).

Contents vary by configuration. Check the row for the option selected above.

Technical Specifications

Technical Specifications

Model & Application

Model & Application
Brand

Harvia

Catalog Product

Harvia M3 Wood Fired Sauna Stove

Heater Type

Wood-burning sauna stove

Model Number

M3

SKU / Part Number

WKM3

Sauna Sizing

Sauna Sizing
Maximum Room Volume

459 ft³

Minimum Room Volume

212 ft³

Electrical

Electrical
Rated Power

16.5 kW

Dimensions & Weight

Dimensions & Weight
Minimum Host-Room Height

78.74 in

Product Weight

99.2 lbs

Stone Capacity & Performance

Stone Capacity & Performance
Stone Capacity

66 lbs

Installation Clearances

Installation Clearances
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 & Required

Included & Required
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

Certifications
Certifications & Listings

CE, EAC

Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.

How It Fits

How This Product Fits the System

What it is used for

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.

What to plan

  • Size from adjusted sauna volume, including the effect of glass, masonry, and other uninsulated surfaces; do not size from floor area alone.
  • Match the selected model's power or fuel, voltage, phase, circuit, wire, control, stone, and venting requirements before ordering.
  • Treat clearances, ceiling reference planes, ventilation, guarding, floor protection, and service access as one room-layout decision.
  • Follow the current installation manual and use a qualified installer.

Required separately

Complete the system with these items.

Designed to work with

Model-specific replacements and compatible system components.

Optional accessories

Optional upgrades and accessories.

Other heater options

Compare these options; sizing, power, controls, clearances, and stones may differ.

Attachments
Gallery
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
Becky
Becky
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.
Deb
Deb
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.
Becky
Becky
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.

PLAN THE WHOLE SAUNA

The room and heater still have to work as one system.

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.