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Cozy Heat SW Series Thru Wall Sauna Stove

Cozy Heat SW Series Thru-Wall Sauna Stove

$1,985.00 - $2,835.00
$1,985.00
$1,985.00 - $2,835.00
$1,985.00
+ FREE SHIPPING
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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

Cozy Heat SW Series Thru-Wall Sauna Stove

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.
  • 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.
  • 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 you place your order, you'll receive an order confirmation email. Please allow 1-3 business days for processing. If there are any unexpected delays, we’ll reach out to you immediately.

Shipping Methods:

  • Standard Shipping: Small items ship with UPS, FedEx, or USPS. They usually do not need a delivery signature.
  • Freight Shipping: Large or heavy items ship with a box truck to your curbside or loading dock. They will schedule a delivery appointment when the shipment is in your area.

Delivery Timeline:

  • Processing: Please allow 1-3 business days for us to process your order in our system.
  • Handling Time: Some items take longer than others to get ready for shipment. This product should ship out in 3-5 business days days from the time it is processed.
  • Transit Time: Once shipped, we will send you the tracking number. Ground orders take 1-5 business days. Freight shipments may take 3-10 business days, depending on your location.
  • Delivery Appointment: For freight deliveries, the carrier will contact you to set a delivery time. Someone must be present to receive the delivery.

Receiving Your Shipment: Inspect your shipment for damage before signing the delivery receipt. For any issues, mark “DAMAGED, NEEDS REVIEW,” take photos, and contact us within 2-3 business days.

Assembly Options: Most items require assembly. We offer referrals for professional assembly if needed. Contact us for assistance before or after delivery of your order.

Easy Assembly:
No Professional Assembly Required. Need A Hand? Click Here.

Assembly:

Most items will require some assembly. Majority of customers assemble their own equipment with no issues using the instructions included with every product. If you run into any trouble, you can reach out to us for manufacturer tech support.

Assembly Service: If you require assistance to setup your new equipment, we can refer you to our perffered installater partner. They will help you with the installation of your equipment at a quoted price. Want To Know More? Click Here.

Commercial Customers: If you are building a gym that needs installation, please reach out. We can assist with gym design, equipment selection, delivery, assembly, and more!

Contact Us: To connect with an installer in your area or get a price quote, please call us at 888-995-4450 or email us at info@selectfitnessusa.com.

Warranty Information:

Select Fitness is an authorized dealer for every product found on our website. Every product available for purchase comes standard with its original manufacturer's warranty, ensuring you receive a functional, quality product.

When you receive your products, rest assured that they are backed by the manufacturer's guarantee.

For specifics on the exact warranty and warranty terms of each product, please see the product details where we mention the warranty of each item.

Residential, light commercial, and full commercial warranties are based on the setting you will use the product. We do our best to detail the specifics of each warranty usage terms on each product.

Contact us if you have questions about specific warranties or need assistance.

To make a warranty claim, please contact us for support. You can also reach out to the manufacturer for help.

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Store FAQ's

Do you offer installation services?

Yes! We partner with a reliable installer network to provide assembly and installation options. Contact us for a quote to get your equipment professionally set up.

Do you offer financing?

Yes! We offer Affirm, PayTomorrow, ShopPay, and Klarna so you can split your purchase into manageable payments.

If you need business financing options contact us for a list of places to quote your loan or lease agreement.

Can I use my HSA/FSA to purchase fitness equipment?

Yes! We accept HSA and FSA payments through TruMed, a payment option at checkout, making it easier than ever to pay for fitness and wellness products with your tax advantaged dollars.

Do you offer extended warranties?

Yes, we offer SureBright extended warranties for additional coverage and peace of mind, especially when it comes to labor intensive equipment.

Is there sales tax on my order? Why not...

As of 3/5/25 sales tax is charged only on orders shipping to Illinois, Georgia, Florida, and North Carolina. Outside of these specified states, there will be no sales tax on your order.

We have tax nexus in these states that we must collect and remit to the state.

If you are tax exempt, please call 888-995-4450 and get a quote without tax.

What if my order is damaged during shipment?

If your order is damaged during shipping, document the damage with photos and videos and contact us. We'll work out the best solution, be it replacement parts, paint, a partial refund, or a replacement. 

Can I cancel my order?

Yes, you can cancel your order and get a full refund until your product has shipped. Once shipped, you may be liable for the costs of shipping involved to turn it around.
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