Cozy Heat SW Series Thru-Wall Sauna Stove
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Cozy Heat SW Thru-Wall Sauna Stove - Wood-Burning Sauna Heater
The Perfect Blend of Convenience, Performance, and Timeless Sauna Tradition
Looking for the ultimate sauna heater that keeps your space clean while delivering exceptional warmth? The Cozy Heat SW Thru-Wall Sauna Stove is the perfect choice. Handcrafted in Estonia, where saunas are an integral part of daily life, this high-efficiency wood-burning sauna stove delivers mild, long-lasting heat while allowing you to pour water over hot stones for a deep, luxurious steam sauna experience.
The thru-wall design allows you to load firewood from outside your sauna, keeping your space clean and free of wood debris. Plus, its sleek cylindrical shape isn’t just for aesthetics—it also enhances heat distribution, ensuring consistent, even warmth throughout your sauna.
Built for maximum durability, this 5mm-thick stainless steel heater burns 25-40% less wood and meets German BIMSCH emission standards, producing 6x cleaner smoke gases.
Whether you’re setting up a backyard sauna, off-grid retreat, or home spa, the Cozy Heat SW Thru-Wall Stove is the perfect combination of elegance, efficiency, and performance.
Cozy Heat SW Thru-Wall Sauna Stove Features
- Thru-Wall Firebox for a Clean Sauna Space: Load firewood from outside your sauna, keeping ash and wood debris out of your relaxation area.
- Sleek Cylindrical Design: A modern, rounded shape enhances both heat circulation and the overall sauna aesthetic.
- Efficient Wood-Burning Heat: Provides deep, consistent warmth, perfect for traditional steam sauna sessions.
- Heavy-Duty Steel Construction: Built with 5mm-thick stainless steel, ensuring exceptional durability and heat resistance.
- Fuel-Saving Performance: Burns 25-40% less firewood than comparable sauna stoves, reducing costs and wood consumption.
- Eco-Friendly Emissions: Meets strict German BIMSCH certification, producing 6x cleaner smoke gases for a healthier sauna experience.
- Minimal Safety Clearance Requirements: Designed for compact sauna spaces, requiring minimal safety distances.
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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.
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Premium Sauna Stone Capacity
- 12kW Model: Requires at least 265 lbs of stones.
- 18kW Model: Requires at least 353 lbs of stones.
- Additional stones are recommended to ensure optimal 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.
SW Series Thru-Wall Sauna Stove Specifications
Cozy SW Thru-Wall 12 Model:
- Power Output: 12kW
- Sauna Room Size: 210 - 423 cu. ft.
- Firewood Length: 12.95" (329mm)
- Firewood Diameter: 3.14" - 4.72" (80-120mm)
- Weight: 161 lbs (Shipping Weight with Stones: 425 lbs)
- Dimensions: 27.16" D x 19.29" W x 32.12" H
- Safety Distances: 55.89" front-to-back, 33.85" left-to-right
- Flue Connection: Top
Cozy SW Thru-Wall 18 Model:
- Power Output: 18kW
- Sauna Room Size: 317 - 635 cu. ft.
- Firewood Length: Up to 15.74" (400mm)
- Firewood Diameter: 3.14" - 4.72" (80-120mm)
- Weight: 236 lbs (Shipping Weight with Stones: 633 lbs)
- Dimensions: 31.49" D x 21.65" W x 34.25" H
- Safety Distances: 60.22" front-to-back, 40.54" left-to-right
- Flue Connection: Top
Warranty: 2 Years
Download the Installation Manual.
Upgrade your sauna with a wood-fired heater that blends modern design, traditional performance, and convenient functionality.
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.
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