Harvia Pro Duo Wood Sauna Stove with Fireplace | Pro 20 Duo or Pro 36 Duo
Price range: $3,190.00 through $3,794.00
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Harvia wood stove with a fire tunnel and fireplace door in the next room. Pro 20 Duo or Pro 36 Duo.
Good to know before you order
Delivery
$350 flat-rate shipping. We call you to schedule delivery before it ships, and you can always ask us for a delivered price.
Installation
No electrical needed. Follow the clearances and chimney steps in the manual. Not sure it fits your sauna? Send us your sauna size and we'll check it.
Warranty
Covered by the manufacturer's warranty. If anything goes wrong, you call us and we handle it with the brand for you.
Ways to pay
Card, PayPal, Affirm or Klarna at checkout. Save 4% when you pay by check, ACH or wire.
The Harvia Pro Duo heats the sauna and shows the fire in the next room. The stove sits in the sauna, and its long fire tunnel ends in a big glass fireplace door in the lounge or changing room, so you load wood and enjoy the flames without opening the sauna. Choose the Pro 20 Duo or the larger Pro 36 Duo.
Why people pick it
- Fireplace glass door in the next room
- Load wood from outside the sauna
- No wood or ash in the hot room
- Pro 20 or Pro 36 sizes
- Made in Finland
Pick your model
| Model | Output | Room size | Stones needed | Weight | Price |
|---|---|---|---|---|---|
| Pro 20 Duo | 24.1 kW | 282 to 706 cu. ft. | 88 lbs split-face, 10-15 cm (2 boxes) | 176.4 lbs | $3,190 |
| Pro 36 Duo | 31 kW | 494 to 1,271 cu. ft. | 132 lbs split-face, 10-15 cm (3 boxes) | 176.4 lbs | $3,794 |
Your options, explained
Choose your model
Pick this in the drop-down above. Each option has its own price.
Pro 20 Duo$3,190For 282 to 706 cu. ft., 88 lbs split-face, 10-15 cm of stones.
Pro 36 Duo$3,794For 494 to 1271 cu. ft., 132 lbs split-face, 10-15 cm of stones.Add sauna stones
Stones are not included. Add them here so they ship with your order.
Split-face stones, 10-15 cm$69 per boxSold in 44 lb boxes. Pick 1 to 3 boxes above. The size table shows how many your model needs.Chimney kit (optional)
Harvia WHP1500 chimney kit, stainless$1,652Complete insulated chimney with rain cap and ceiling flange.
Harvia WHP1500 chimney kit, black$1,753Complete insulated chimney with rain cap and ceiling flange, in black.
Harvia barrel / flat roof chimney kit, stainless$1,433Chimney kit for barrel saunas and flat roofs.
Harvia barrel / flat roof chimney kit, black$1,620Chimney kit for barrel saunas and flat roofs, in black.Chimney extension (optional)
500 mm extension, stainless$476Adds 500 mm of chimney height.
500 mm extension, black$507Adds 500 mm of chimney height, in black.
1000 mm extension, stainless$682Adds 1000 mm of chimney height.
1000 mm extension, black$723Adds 1000 mm of chimney height, in black.Smoke pipe and adapter (optional)
WZ115155 adapter, 4" Euro to 6" US$117Takes the Harvia stove outlet to a standard 6 inch US chimney.
1 m smoke pipe, stainless$236Connects the stove to the chimney, in stainless.
1 m smoke pipe, black$179Connects the stove to the chimney, in black.Floor protection (optional)
Protective bedding, small (WL100)$351Protects the floor under smaller stoves.
Protective bedding, large (WL110)$396Protects the floor under larger stoves.
Protective bedding, round (WL120)$396Round floor protection plate.Specs
| Fuel | Firewood |
|---|---|
| Mounting | Floor, with adjustable feet |
| Finish | Stainless Steel |
| Size (Pro 20 Duo) | 17″ W × 20″ D × 30″ H |
| Flue | 115 mm (4.5″) Harvia smoke pipe, use the WZ115155 adapter for a 6″ US chimney |
| Listings | CE, EAC |
| Made in | Finland |
What you need
- Sauna stones (see the table for how many)
- A chimney rated for wood stoves, such as the Harvia WHP1500 kit
- Safe clearances to walls, or a Harvia protective sheath to reduce them
- A non-combustible floor or a Harvia protective bedding plate
- Check your local code and insurance before you install
Is it the right fit?
Great for
- Saunas with a lounge or changing room next door
- People who want a fireplace feel
Look elsewhere if
- Your sauna has no room on the other side of the wall
Documents
- Pro SL and Duo manual (PDF)
- Pro 20 Duo data sheet (PDF)
- Pro 36 Duo data sheet (PDF)
- Harvia warranty (PDF)
Wood stoves ship by freight truck. Call us for lead time and help planning your chimney and clearances.
| Weight | N/A |
|---|---|
| Dimensions | N/A |
| Model | Pro 20 Duo, Pro 36 Duo |
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Complete your setup
What most people add with a new heater.
You save Fresh stones for better steam
You save Bucket, ladle, thermometer and more
You save Keeps your head cool
Common questions
How does the Duo work?
The stove is in the sauna and the fire tunnel goes through the wall to a glass door in the next room, where you load wood.
How many stones does it take?
88 lbs for the Pro 20 Duo and 132 lbs for the Pro 36 Duo.
How do I connect it to a US chimney?
Harvia stoves use a 115 mm (4.5") smoke pipe. Use the Harvia WZ115155 adapter to go to a 6" US chimney, or use the Harvia WHP chimney kits.
How long until it ships?
Lead times vary by model and season. We confirm the timeline when you order and contact you before it ships.
Will this heater fit my sauna?
Heaters are sized by the volume of the sauna room. Check the room size range in the specs above, or send us your sauna's inside dimensions and we'll confirm the right size.
Does a wood heater need electrical?
No. Wood-burning heaters need no power. You do need a proper chimney and the clearances listed in the manual.
Can I pay over time?
Yes. Choose Affirm or Klarna at checkout to split your order into monthly payments, subject to approval. You can also save 4% by paying with check, ACH or wire.
What about the warranty?
It's covered by the manufacturer's warranty. You don't have to deal with the brand yourself. Call us and we handle the claim for you.
Still have a question?
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