HARVIA M3 SL Sauna Stove: Transforms Small Wood-Heated Saunas Into a Big Deal

Description

The Harvia M3 SL model is designed for people who want to conveniently heat their sauna from another room or outside the building. The M3 SL is placed in the sauna room and your firewood is loaded into the fire chamber from the other side of the wall. While someone is enjoying the heat in the sauna room another bather can be relaxing in the next room while appreciating the glow of the flames behind the cast-iron-framed glass door.  

Indulge in the ultimate outdoor sauna experience with the M3 SL Wood Burning Sauna Stove. Sit back and relax as the white-hot crackling fire elevates your sauna temperature to over 200º F. This stove, blending a primitive concept with modern design cues, goes beyond the ordinary, washing away your stress and creating a level of serenity and calm unmatched by any other sauna stove. It's the key to taking your outdoor sauna to the next level.

The Harvia M3 SL wood-burning heater boasts a classic design, perfectly suited for small to medium saunas up to 459 cubic feet. Experience even heat and efficient air circulation, ensuring a relaxing and comfortable sauna session every time you step in. The stove comes in an elegant graphite black color with a stainless steel air-flow spoiler, enhancing both style and functionality.

Classically stylish and eye-catching, the Harvia M3 SL stove transforms small wood-heated saunas into a big deal. Let the shimmer of the warm glow from the glass door transport you to your happy place, where stress melts away with the heat. For those seeking extra amenities, the M3 SL wood-burning heater can be equipped with a pipe model water heater, providing an added layer of comfort to your sauna retreat. Experience the perfect blend of style, functionality, and relaxation with the Harvia M3 SL Wood Burning Sauna Stove.

Features

• Wood-burning stove
• For sauna rooms from 212 cu. ft. to 459 cu. ft.
• 2-in-1 : Sauna Heater and Fireplace
• Heats two rooms
• 16.5 kilowatts
• 66 pound stone capacity (stones sold separately)
• Stainless Steel construction
• Graphite-black color
• Floor installation with adjustable legs
• Cast-iron framed glass door
• Ash Box
• Stove chimney connection on top and upper rear
• Dimensions: 15" W x 18" D x 28" H
• Designed, engineered, and made in Finland
• 2-year manufacturers Warranty

Specifications

• Primary Fuel: Wood
• Equivalent Watts: 16.5 kW
• Installation Type: Floor-Mount
• Max Temperature: 200º F 
• Sauna room:  212-459 cu. ft.
• Stone Capacity: 119 lbs of stones (90 kgs)
• Dimensions: 28" Height x 15.3" Width x 25" Depth
• Heater weight: 99 lbs (44.2 kgs)
• Shipping Weight (with Sauna Stones): 187 lbs
• Minimum Room Height: 75.4" (1915mm)
• Firewood max length: 13.7" (350mm)
  
• Firewood diameter range: 3-6" (80-150mm)

What's in the box

• HARVIA M3 SL Sauna stove
• Installation and Operation Manual
• 2 year manufactures warranty

Accessories and Add-ons

The following options should be considered with your heater purchase.

Sauna Stones 

Required for Operation. Sold Separately.

Genuine Harvia sauna stones are selected according to old traditions and convey a genuine sauna atmosphere. Harvia sauna stones provide good and soft heat. Split-face sauna stones are the only correct stones for electric heaters and woodburning stoves because they can store lots of heat and the water evaporates efficiently from the wide surface of the fracture. Angular split-face stones also allow for loose placement of the stones, which is the most important requirement, particularly in electric heaters in order to make it possible for the heat to be conveyed to the sauna room between the hot stones and heating elements. Good air circulation in the stone space makes the electric heating elements last for as long as possible.

The Harvia AC3020 stones are 10-15cm in size and designed for use with Harvia sauna heaters and stoves. Each natural stone is unique in shape and size so we recommend purchasing an additional box of sauna stones to allow you to choose the highest quality of stone for fit, form, and function.

The AC3020 stones work for the following Harvia Sauna Heaters:

• Virta Series
• AF (Forte) Series
• M Series
• Pro Series
• Legend Series

HARVIA M3 Sauna Stove requires approximately: 66lbs sauna stones with a diameter of 4-6 in (10-15 cm). 2 boxes x 44lbs

Chimney Kits

Required for Operation. Sold Separately.

The HARVIA M3 Sauna Stove additionally requires connection with the chimney.

1. Stainless Chimney Kit

The Harvia WHP1000500-PKG is everything you need for your sauna room chimney, including the chimney! This kit includes Harvia WHP1000500 stainless steel chimney and Harvia WHPASSYM which is the assembly kit to put it all together. 

The Harvia WHP1000500 allows you to easily and safely extend your Harvia steel chimney. Thanks to the grooved joint mechanism, your extension and chimney will resist movement caused by temperature changes. With the capability of indoor and outdoor installation, the WHP1000500 gives you incredible flexibility.

To be noted: Designed for use on flat roofs.

• Innovative design
• Stainless steel
• Complete package for convenience
• Prevents movement caused by temperature changes
• Can be installed indoors and outdoors
• Designed, engineered, and made in Finland

Includes: 

• Harvia WHP1000500 Chimney, Dimensions: 59" Height (1498mm), 8-5/8" Diameter (203mm)
• Rain Cap
• Symmetrical Rain Flange
• Lead-through insulation and protector
• Lead-through flange
• Smoke Pipe
• Clamp

Harvia Chimney Kit Installation and Operation Manual

2. Black-coated Steel Chimney Kit

The Harvia WHP1000500M-PKG is everything you need for your sauna room chimney, including the chimney! This kit includes Harvia WHP1000500M black steel chimney and Harvia WHPASSYMM which is the assembly kit to put it all together. 

The Harvia WHP1000500M allows you to easily and safely extend your Harvia steel chimney. Thanks to the grooved joint mechanism, your extension and chimney will resist movement caused by temperature changes. With the capability of indoor and outdoor installation, the WHP1000500M gives you incredible flexibility.

To be noted: Designed for use on flat roofs.

• Innovative design
• Black powder coated
• Complete package for convenience
• Prevents movement caused by temperature changes
• Can be installed indoors and outdoors
• Designed, engineered, and made in Finland

Includes:

• Harvia WHP1000500M Chimney, Dimensions: 59" Height (1498mm), 8-5/8" Diameter (203mm)
• Rain Cap
• Symmetrical Rain Flange
• Lead-through insulation and protector
• Lead-through flange
• Smoke Pipe
• Clamp

Harvia Chimney Kit Installation and Operation Manual

Protective Sheath Panel

Optional.

The Harvia WL450 protective shield is designed for use with the M3 and M3SL wood sauna stoves. The protective shield reduces the safety distance to combustible materials. This features a steel material, with a black finish. 

• 3-sided sheath
• Steel material
• 2 year warranty

Harvia Protective Sheath Panel Manual

Protective Bedding

Optional.

Protect your sauna floors with the Harvia WL100 protective bedding. The aluminum-zinc coated steel is painted a classic black and is great for maximizing your sauna floors lifespan. 

The Harvia WL100 protective bedding should be used when a fireplace or stove is installed onto a waterproofed tile or hardwood floor.

• Aluminum-zinc coated steel
• Black
• Adjustable feet
• For wood-burning sauna stoves
• Helps protect floors
• Dimensions: 17.7" W (450mm), 26" D (665mm), 2.4"-3" H (60-75mm)
• Can be installed on a sloping floor
• 2 year warranty

Harvia Protective Bedding Manual

Stainless Steel Water Tank Heater

Optional.

The Harvia pipe model water heater is placed directly on top of the stove, and the tank holds 22 litres of water. The water heats up quickly, as the smoke pipe runs through the tank and acts as a wall inside it. The pipe model water heater is compatible with all wood-heated Harvia stoves (except the Harvia 50 stove).

Harvia Stainless Steel Water Tank Heater Manual

How to Install

For the Installation Instructions and Electrical Connections, please refer to the following document: HARVIA M3 Sauna Stove Installation and Operation Manual

Please note: the electrical connection of the device must be performed by a qualified electrician in accordance with the applicable standards and requirements.

Additional Resources

HARVIA M3 Data Sheet

HARVIA Safety Clearances

HARVIA Declaration of Performance

HARVIA Chimney Installation and Operation Manual

For Simple Sauna Sizing, please follow the link HARVIA - Sizing Your Heater. Choose the heater with power adequate to the cubage of the sauna room.  However, for non-insulated walls (brick, glass block, glass, concrete, etc.) a more powerful heater is needed. Add 1,2 m³ to the cubage of the steam room per each square meter of uninsulated wall. For example, a 10 m³ sauna room with a glass door corresponds to the power requirement of a 11.5 m³ sauna room. 

Shipping & Returns

The weight or packaging of this product requires delivery by special appointment, and on a wooden pallet. 

The driver is responsible for curbside delivery “only” and will lower the items to ground level. 

Warranty

2 year manufacturer Warranty.