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Cozy Heat O Thru Wall Sauna Stove

Cozy Heat O Series Thru-Wall Sauna Stove

$1,790.00 - $2,675.00
$1,790.00
$1,790.00 - $2,675.00
$1,790.00
+ FREE SHIPPING
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Cozy Heat O Thru-Wall Sauna Stove - Wood-Burning Sauna Heater

Traditional Sauna Heat with a Clean and Convenient Thru-Wall Design

Cozy Heat O Thru-Wall Sauna Stove

Looking for the authentic warmth of a wood-fired sauna but prefer to keep firewood and ash outside your sauna room? The Cozy Heat O Thru-Wall Sauna Stove offers the best of both worlds.

Handcrafted in Estonia, where sauna culture is deeply rooted, this wood-burning sauna heater delivers gentle, long-lasting heat while allowing you to ladle water over the stones for an intensely relaxing steam experience.

The thru-wall design means you can load firewood from outside your sauna, keeping the interior tidy and maximizing your relaxation. At the heart of this stove is its innovative circular rim design, which not only enhances aesthetics but also ensures even heat distribution throughout your sauna space.

Plus, with up to 40% better fuel efficiency and 6x cleaner smoke emissions, it's an eco-friendly and cost-effective heating solution for cabins, backyard saunas, or off-grid retreats.

Cozy Heat O Thru-Wall Sauna Stove Features

  • Thru-Wall Firebox for a Clean Sauna Space: Load firewood from outside the sauna, keeping ash, debris, and clutter away from your relaxation zone.
  • Efficient Wood-Burning Heat: Provides deep, radiant warmth, perfect for traditional steam saunas.
  • Unique Circular Rim Design: Enhances aesthetic appeal and heat distribution, ensuring even warmth throughout your sauna.
  • Heavy-Duty Steel Construction: Built with 5mm-thick stainless steel, including a reinforced flame cutter for exceptional durability.
  • Highly Fuel-Efficient Performance: Burns 25-40% less firewood than comparable sauna stoves, reducing wood consumption and operating costs.
  • Eco-Friendly Emissions: Meets strict German BIMSCH certification, ensuring 6x cleaner smoke gases for a healthier sauna environment.
  • 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.

O Series Thru-Wall Sauna Stove Specifications

Cozy O Thru-Wall 12 Model:

  • Power Output: 12kW
  • Sauna Room Size: 210 - 423 cu. ft.
  • Firewood Length: Up to 12.95" (329mm)
  • Firewood Diameter: 3.14" - 4.72" (80-120mm)
  • Weight: 125 lbs (Shipping Weight with Stones: 367 lbs)
  • Dimensions: 26.37" D x 17.71" W x 27.55" H
  • Safety Distances: 55.1" front-to-back, 33.06" left-to-right
  • Flue Connection: Top

Cozy O 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: 181 lbs (Shipping Weight with Stones: 533 lbs)
  • Dimensions: 30.70" D x 19.88" W x 29.76" H
  • Safety Distances: 59.43" front-to-back, 39.75" left-to-right
  • Flue Connection: Top

Warranty: 2 Years

Download the Installation and Operation Manual

Upgrade your sauna with the ultimate wood-fired heater—crafted for efficiency, designed for comfort, and built for the perfect sauna experience.

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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