Cozy Heat Quattro Wood Burning Sauna Stove | 12kW & 18kW | Internal or Through-Wall Feed
Price range: $2,460.00 through $3,205.00
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Cozy Heat Quattro wood-burning sauna stove in 12 or 18 kW for saunas from 210 to 635 cu. ft., with internal or through-wall feed. Burns 25% to 40% less wood with 6x cleaner smoke. Hand-made in Estonia.
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 Cozy Heat Quattro is a wood-burning sauna stove hand-made in Estonia, with a square, rustic design that suits traditional and cabin saunas. It burns 25% to 40% less wood than comparable stoves, its smoke gases are 6x cleaner, and a big stone load gives mild, long-lasting heat with plenty of steam. Choose 12 kW for saunas from 210 to 423 cu. ft. or 18 kW for 317 to 635 cu. ft., and an internal feed (load inside the sauna) or external feed (load through the wall from the next room).
Why people pick it
- Burns 25% to 40% less wood
- Smoke gases 6x cleaner
- German BImSchV certified
- Big stone load for mild heat
- Small safety distances
- Glass door to watch the fire
- Through-wall option keeps ash out of the hot room
- Hand-made in Estonia, 2-year warranty
Pick your option
| 12 kW, internal feed | $2,460 |
|---|---|
| 12 kW, external feed (through-wall) | $2,725 |
| 18 kW, internal feed | $2,810 |
| 18 kW, external feed (through-wall) | $3,205 |
Your options, explained
Choose your size and wood feed
Pick both in the drop-downs above. Each combination has its own price.
12kW, internal feed$2,460For rooms about 210 to 423 cu. ft. Internal: you load wood from inside the sauna.
12kW, external (through-wall) feed$2,725For rooms about 210 to 423 cu. ft. Through-wall: you load wood from the next room, so ash and smoke stay out of the sauna.18kW, internal feed$2,810For rooms about 317 to 635 cu. ft. Internal: you load wood from inside the sauna.18kW, external (through-wall) feed$3,205For rooms about 317 to 635 cu. ft. Through-wall: you load wood from the next room, so ash and smoke stay out of the sauna.Add sauna stones
Stones are not included. Pick split-face or rounded, not both, in the size that matches your stove.
Split-face stones$260 / $455Olivine diabase in 44 lb boxes. Pick the line for your stove size above: 12kW – 4 boxes (176 lbs), 18kW – 7 boxes (308 lbs).
Premium rounded stones$720 / $1,080Smooth rounded olivine in 33 lb boxes, a softer look and steam. 12kW – 6 boxes (198 lbs), 18kW – 9 boxes (297 lbs).Chimney kit (optional)
Harvia chimney parts fit this stove’s 115 mm flue. The WHP1500 goes straight up through a flat ceiling and roof. The barrel / flat roof kit is for barrel saunas and flat roofs.
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)
Add one if your roof is tall or steep and the chimney needs to reach higher.
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)
Smoke pipe bridges the gap between the stove and the chimney. The adapter is only needed if you are hooking up to a 6 inch US chimney instead of a Harvia kit.
WZ115155 adapter, 4" Euro to 6" US$117Takes the stove’s 115 mm flue to a standard 6 inch US Class A 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.Chimney cover (optional)
A black stainless grid that wraps the chimney above the stove and holds more stones. Pick the height that suits your ceiling.
Cover H500 (19.7" tall)$795Holds extra stones around the chimney for more steam and less bare hot pipe.Cover H700 (27.6" tall)$875Holds extra stones around the chimney for more steam and less bare hot pipe.Specs
| 12 kW | 18 kW | |
| Room size | 210 to 423 cu. ft. | 317 to 635 cu. ft. |
| Size, internal feed | 17.3″ W × 20.2″ D × 27.6″ H | 21.7″ W × 25.6″ D × 34.3″ H |
| Size, external feed | 17.3″ W × 26.1″ D × 27.6″ H | 20.3″ W × 31.1″ D × 28.8″ H |
| Weight | 141 lbs (external feed 159 lbs) | 209 lbs (external feed 220 lbs) |
| Stone capacity | 175 lbs | 265 lbs |
| Log length | Up to 13″ | Up to 15.7″ |
| Minimum room height | 72″ | 82″ |
| Flue connection | Top | Top |
| Fuel | Wood | |
| Made in | Estonia by Cozy Heat, 2-year warranty | |
What comes in the box
The stove body and outer frame, chimney pipe, glass door, ash box, cleaning hatch, and the installation and operation manual. Stones are sold separately.
Add-ons
| Split-face stones | 12 kW: 4 boxes, +$260 / 18 kW: 7 boxes, +$455 |
|---|---|
| Rounded stones | 12 kW: 6 boxes, +$720 / 18 kW: 9 boxes, +$1,080 |
| Chimney kit (fits the 115 mm flue) | Harvia WHP1500 + |
| Quattro chimney cover | |
| Quattro chimney cover | |
| Quattro chimney cover | |
| Quattro chimney cover | |
| Chimney extension | 500 mm +$476 to 1000 mm +$723 |
| Smoke pipe and adapter | 4″ Euro to 6″ US adapter + |
| Quattro chimney cover | |
| Quattro chimney cover | |
| Quattro chimney cover | H500 +$795 / H700 +$875 |
See all options on our Cozy Heat stones and chimney cover pages, our chimneys and stove pipe, or the sauna heater guide for help choosing.
Internal or external feed?
An internal-feed stove loads from inside the sauna. An external-feed (through-wall) stove sits in the sauna but loads from the next room, so wood, ash and smoke stay out of the hot room. External feed needs a fire-safe wall opening.
Before you buy
- Plan a chimney with a top connection and follow the safety distances in the manual
- Use a non-combustible floor under and in front of the stove
- Check your room size and ceiling height against the table above
- Ships by scheduled freight
| SIZE | 12kW, 18kW |
|---|---|
| WOOD FEED | Internal, External |
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What our customers say
4.8 from 139 Google reviewsExtremely happy with our sauna from Cedar Sense. Extremely high quality product and everyone loves it. Mike provides unparalleled customer service and it’s worth every penny to go with him. I can’t think of any other company that I can call the owners phone and he picks up and answers my questions. Outstanding experience from beginning to end.
4 Person Barrel Sauna For Sale
Great customer service. The owner called me up and took good care of me. Rare in today’s world. Highly recommend. Thank you Mike.
Peter Ahlers-Nelson
Mike with Cedar Sense helped me get set up with an absolutely beautiful 6 person barrel sauna. We live in the mountains and opted for the iki wood heater and a big window to enjoy the view. The build construction was high quality. I had seen multiple other kits and barrel saunas and this one was over the top in being well made. We chose a metal roof due to the snow load as well. Mike delivered it and set it up perfectly on our back deck. The whole process was seamless and his communication was great. I would strongly recommend using Cedar Sense. In addition, he is always around and helpful for questions and anything else needed.
Brian Unterman
Mike … the owner is ‘amazing’ to work with, helpful, responsive & very knowledgeable. The ‘hot tub’ itself is attractive to look at, has a very efficient wood burner (WOW) & feels good size & shape wise when you are in the water. I’m very pleased. Tim
Tim Day
I gave a rating of 5 stars to Cedar Sense for the following reasons; Excellent Product Quality Excellent Product Variety and Availability Excellent Customer Service The Superior Integrity and Honesty of Mike the Owner.
Jeanne Parolini
Love! Mike did a great job walking me through picking the right sauna for our wants, modifying the benches to allow for hot yoga and delivering and installing for us! Cedar Sense knocked it out of the park for us and we could not be more happy! This sauna will be perfect for our whole family to use, to refresh relax and enjoy together! Thank you, thank you, THANK YOU!
6 Person Outdoor Sauna Cabin
Mike is such a great guy! Checked out his shop and products and enjoyed a fun coffee drink at Boozhi Brew. His saunas are beautiful and we are already trying to figure out a good time to use his portable sauna rental. Highly recommend!
Leah S
Cedar Sense was great to work with. They provided us with tongue-n-groove planking, glass framed entry door, sized & provided the sauna heater while promptly delivering our order. They also answered numerous questions while offering lots of free sensible advice. Highly recommend you reach out to Cedar Sense for all your Sauna needs.
Dan Markert
Couldn’t have asked for a better experience. Micheal is a top notch guy, spent all the time on the phone with me to not only give me information and insights on the saunas but also ideas that could help direct us and our business in the right direction! The sauna was bigger and more impressive than I would have imagined! So pleased with our purchase!
Cody Repovsch
I bought a cedar log swing from Cedar Sense, it was beautiful! I ordered it online, the communication was great. They built it and shipped it very quickly. I would recommend buying from them. Thank you Cedar Sense!
Jason Siegel
Our sign turned out real nice. Installation went well. Communicated with me in a timely manner via text, e-mail and via phone calls.
Jim Aakhus
What a great sauna that we got from Cedar Sense ! Michael was with us on the entire process from investigating products to purchase to delivery and set up Cedar Sense was right there! MINNESOTA COMPANY! ⭐️⭐️⭐️⭐️⭐️
chris grimm
I love your products; regionally unique, natural ingredients and locally sourced materials. Great gifts for all my friends living in Florida.
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What most people add with a new heater.
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Common questions
12 kW or 18 kW?
12 kW for saunas from 210 to 423 cu. ft. and 18 kW for 317 to 635 cu. ft. If you're between sizes or your sauna has a lot of glass, go bigger.
Are stones included?
No. The 12 kW holds 175 lbs and the 18 kW holds 265 lbs. Add split-face or rounded stones as an add-on.
Is a chimney included?
A chimney pipe comes with the stove. Plan the rest of the chimney system for your building and local code.
Internal or external feed?
Internal feed loads from inside the sauna. External feed loads through the wall from the next room, which keeps wood, ash and smoke out of the hot room.
How long is the warranty?
2 years from Cozy Heat.
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?
Mike answers calls and texts himself.
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