Cozy Heat Thru-Wall Wood Burning Sauna Stove
Order Today > Ships in ~ 4-6 Business Days.
We know what you want. We won't be beat.
ShopPay, PayPal, Credit Card, HSA/FSA (TruMed) & more.
Ask A Sauna Expert
Buy with confidence. Contact a Wellness Junction specialist.
Cozy Heat Thru-Wall Sauna Heater - Wood-Burning Sauna Stove
The Ultimate Traditional Sauna Experience – With Convenient Thru-Wall Design
Want a truly authentic sauna experience without the mess of firewood inside your sauna? The Cozy Heat Thru-Wall Sauna Heater offers the perfect solution. This handcrafted wood-burning sauna stove is designed and built in Estonia, where saunas are a way of life.
Its thru-wall design lets you load firewood from outside the sauna room, keeping your space clean and uncluttered while still delivering mild, long-lasting heat and luxurious steam.
Built for efficiency, this wood-fired sauna stove burns up to 40% less wood than comparable models and meets strict German BIMSCH emissions standards—producing smoke that is up to 6x cleaner.
Whether you're outfitting a backyard retreat, cabin, or off-grid sauna, this stove is built for lasting performance and an unmatched sauna experience.
Cozy Heat Cozy Series Thru-Wall Sauna Heater Features
- Thru-Wall Firebox for Clean, Tidy Sauna Space: Load firewood from outside the sauna to keep ash, debris, and mess away from your relaxation zone.
- Efficient Wood-Burning Heat: Provides deep, radiant warmth while allowing you to ladle water over stones for a traditional steam sauna experience.
- Durable Steel Construction: Crafted from 5mm-thick stainless steel, including a reinforced flame cutter for long-lasting durability.
- Highly Fuel-Efficient Design: Burns 25-40% less wood than comparable stoves, saving time and fuel.
- Eco-Friendly Operation: Meets German BIMSCH certification, ensuring 6x cleaner smoke emissions for an environmentally responsible sauna.
- Minimal Safety Clearance Requirements: Compact and efficient design allows for safer installation in smaller sauna spaces.
-
Two Power Options for Different Sauna Sizes
- 12kW Model: Heats saunas from 210 to 423 cu. ft.
- 18kW Model: Heats saunas from 317 to 635 cu. ft.
-
High-Quality Sauna Stone Capacity (Sold separately)
- 12kW Model: Requires at least 265 lbs of stones.
- 18kW Model: Requires at least 353 lbs of stones.
- Additional stones are recommended to ensure the best heat retention and steam production.
- Included: Comes with a chimney pipe, heater body, cleaning hatch, glass door, ash box, and a detailed operation manual for easy setup.
Cozy Heat Thru-Wall Sauna Heater Specifications
Cozy 12 Thru-Wall Model:
- Power Output: 12kW
- Sauna Room Size: 210 - 423 cu. ft.
- Firewood Length: Up to 12.95" (329mm)
- Firewood Diameter: 3.15" - 4.72" (80-120mm)
- Weight: 126 lbs (Shipping Weight with Stones: 368 lbs)
- Dimensions: 25.98" D x 16.92" W x 27.55" H
- Safety Distances: 54.71" front-to-back, 32.67" left-to-right
- Flue Connection: Top
Cozy 18 Thru-Wall Model:
- Power Output: 18kW
- Sauna Room Size: 317 - 635 cu. ft.
- Firewood Length: Up to 15.74" (400mm)
- Firewood Diameter: 3.15" - 4.72" (80-120mm)
- Weight: 185 lbs (Shipping Weight with Stones: 537 lbs)
- Dimensions: 30.51" D x 19.68" W x 29.76" H
- Safety Distances: 71.06" front-to-back, 39.56" left-to-right
- Flue Connection: Top
Warranty: 2 Years
Download the Installation and Operation Manual
Enjoy the convenience of a thru-wall wood-burning sauna heater while experiencing the authentic heat and steam of a traditional sauna.
Order Processing: Once your order is placed, you’ll receive a confirmation email. Please allow 1–3 business days for order review and processing. If we need to confirm delivery details or there are any delays, we’ll reach out right away.
How Saunas Ship:
- Freight Delivery (Most Saunas): Sauna kits and larger models ship on a pallet via freight carrier and are delivered curbside.
- Parcel Shipping (Smaller Items): Accessories or small components may ship via UPS, FedEx, or USPS.
Estimated Delivery Timeline:
- Processing: 1–3 business days.
- Estimated Ship-Out: Typically ships in 1–2 weeks.
- Transit Time: Freight shipments typically take 3–10 business days once shipped.
- Delivery Appointment: The carrier will usually contact you to schedule delivery. An adult must be present to receive and inspect the shipment.
Important Delivery Notes:
- Curbside Delivery: Freight is delivered to the end of your driveway or loading area. Inside delivery or white-glove service is not included unless arranged in advance.
- Measure First: Confirm doorway widths, staircases, and access paths. Sauna kits ship in multiple boxes and/or pallets.
- Inspect on Arrival: Before signing, check for visible damage to packaging or pallet.
If There’s Damage: Note it on the delivery receipt (ex: “Damaged – subject to inspection”), take photos, and contact us within 48 hours so we can assist with next steps.
Warranty Coverage:
We are an authorized dealer, and all saunas include the full manufacturer’s warranty. Coverage terms vary by brand and model and are listed on the product page.
What’s Typically Covered:
- Manufacturer defects in sauna materials and components
- Heaters, controls, and electrical components per manufacturer policy
- Replacement parts shipped to you (labor not typically included)
What’s Typically Not Covered:
- Shipping damage not noted at delivery
- Natural wood variation, knots, or movement over time
- Improper installation, misuse, or operation outside manufacturer guidelines
- Electrical issues due to incorrect wiring or inadequate power supply
Need Help? If you have questions or need to start a warranty claim, contact us and we’ll help coordinate with the manufacturer to get things resolved as quickly as possible.
Sauna FAQs
Get in touch
Have a question? We'd love to hear from you. Send us a message and we'll respond as soon as possible.
