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Description

Cozy Heat COZY 12 SW is a wood-burning sauna stove designed for dry or humid heat in traditional saunas, delivering 12 kW or 18 kW of heating performance for sauna rooms sized 6–12 m³ (210–423 ft³). Its cylindrical stone cage design supports consistent heat and responsive steam when water is ladled over hot stones.

Built for the sauna experience that only wood heat can provide, the COZY 12 SW focuses on steady warmth and the classic “löyly” style steam. The stove is intended to be paired with sauna stones (stones not included) and is designed for effective heat retention and steam production. With an up-to-120 kg stone capacity, you can build a stone mass that helps the sauna hold temperature and deliver a satisfying burst of steam when you add water. The stove is rated for wood fuel, with guidance for wood logs up to 33 cm and a listed max fuel load of 8 kg, supporting repeatable firing cycles for comfortable sessions.

Performance and usability are supported by the stove’s construction and combustion design. The COZY heater platform uses a combustion air approach that separates airflow into multiple paths to improve burn quality and efficiency. In addition, a key high-wear component—the flame cutter—is specified as 5 mm-thick stainless steel, supporting durability in the hottest zone of the firebox. The top flue connection aligns with standard sauna-stove chimney routing, and the included chimney pipe component is specified at D114 mm. The stove also includes a glass door for fire visibility, along with a cleaning hatch and ash box to simplify maintenance during regular use.

What’s included is focused on getting your heater install-ready: outer frame, chimney pipe, heater body, cleaning hatch, heater door with glass, ash box, plus the installation and operation instructions. Sauna stones are purchased separately and selected to match the recommended stone size range (7.5–15 cm). The stove platform is also documented with defined installation safety distances and ventilation guidance, helping you plan clearances and airflow in a wood-fired sauna room.

About the brand: Cozy Heat produces wood-fired sauna stoves designed and engineered in Estonia, with models tested and documented to meet specified European performance standards for sauna stove use. The approach emphasizes practical heater construction, combustion efficiency targets, and clearly defined installation guidance to support long-term ownership for traditional sauna builders and operators.

NOTE: This heater requires sauna stones - sold separately. To make your selection click the 'Bundle & Upgrade' button

12kW - 6 boxes
18kW - 8 boxes

Key Features

  • Wood-burning sauna stove
  • Model: COZY 12 SW
  • Heating performance: 11.5 kW
  • Intended hot room size: 6–12 m³
  • Intended hot room size: 210–423 ft³
  • Designed for dry or humid sauna heat
  • Designed for creating steam by ladling water over hot stones
  • Primary fuel: wood
  • Wood log length up to 33 cm
  • Maximum firewood length: 12.99 in (329 mm)
  • Maximum fuel load: 8 kg
  • Stone capacity: 120 kg
  • Stone size range: 7.5–15 cm
  • Stove stones not included
  • Cylindrical stone cage design
  • Top flue connection location
  • Chimney pipe diameter: D114 mm
  • Combustion air separated into three airflow paths (design concept)
  • Flame cutter specified as 5 mm-thick stainless steel
  • Steel construction
  • Floor mount installation type
  • Glass heater door
  • Upper cleaning hole (documented stove part)
  • Cleaning hatch (documented stove part)
  • Ash box (documented stove part)
  • Outer frame (included component)
  • Chimney pipe (included component)
  • Heater body (included component)
  • Installation and operation instructions included
  • Safety distance to ceiling (top of stove to ceiling): 1130 mm
  • Safety distance to side (inflammable materials): 170 mm
  • Safety distance behind stove (inflammable materials): 230 mm
  • Safety distance to front (inflammable materials): 500 mm
  • Not suitable for installation in a shared flue system (installation guidance)
  • Manufacturer’s warranty: 24 months (with purchase proof)
  • Documented standards: EN 15821:2010
  • Documented standards: DIN EN 13240
  • Documented compliance reference: BImSchV (level 2 as documented)
  • Designed and engineered in Estonia

Dimensions & Specifications

  • Dimensions (WxDxH): 19.29 in x 21.25 in x 32.12 in
  • Dimensions (WxDxH): 490 mm x 540 mm x 816 mm
  • Heater weight: 143 lb
  • Shipping weight with sauna stones: 407 lb
  • Heating performance: 11.5 kW
  • Recommended sauna room volume: 6–12 m³
  • Recommended sauna room volume: 210–423 ft³
  • Stone capacity: 120 kg
  • Recommended stone size range: 7.5–15 cm
  • Chimney pipe diameter: 114 mm
  • Flue connection location: top
  • Maximum firewood length: 12.99 in (329 mm)
  • Max fuel load: 8 kg
  • Warranty: 24 months
  • GTIN: 4745010348051

Why Choose Cozy Heat?

If you want the feel of a traditional wood-fired sauna, the COZY 12 SW is built around the essentials: stone mass, consistent heat, and the ability to generate steam by ladling water over hot stones. With 11.5 kW of output and a target sauna size of 6–12 m³, it supports classic home sauna rooms where steady warmth and responsive “löyly” matter.
Cozy Heat’s approach emphasizes documented performance targets and installation guidance, including defined safety distances and ventilation considerations for wood-fired sauna rooms. The stove platform also specifies durability-focused details like a 5 mm stainless steel flame cutter in the hottest zone of operation and a 24-month manufacturer warranty.
For long-term ownership, the COZY 12 SW includes the core stove components and instructions needed for planning and install, while leaving stone selection to your build preferences (within the documented stone size range). This makes it a straightforward fit for builders who want a traditional stove experience with clearly defined operating and installation expectations.

Fast & Free Shipping

Most Cozy Heat orders arrive within up to 21 days. Timing can vary by destination, carrier scheduling, and product availability. Orders paid through Affirm can add 5 to 7 days.

Order Processing

  • Order Verification: After you place an order, we confirm availability with Cozy Heat or an authorized distribution partner in our network.
  • Payment Authorization: Once availability is confirmed, your payment method is charged.
  • Order Placement: We then place the order with the supplier for fulfillment.
  • Order Cutoff Time: Orders placed after 2:00 PM CST may begin processing the next business day.

Shipping Rates and Delivery Timeline

  • Free Shipping: Shipping is FREE to the continental U.S. (lower 48 states).
  • Handling Time: 1 to 10 business days
  • Transit Time: 1 to 14 business days
  • Brand Timing Note: Cozy Heat products typically deliver within up to 21 days.
  • Affirm Note: Orders paid through Affirm can delay shipping timelines by 5 to 7 days.

Shipment Confirmation and Tracking

  • Tracking Email: You will receive a shipment confirmation email once your order ships with tracking details.
  • Tracking Activation: Tracking may take up to 24 hours to populate after the label is created.
  • Carrier Selection: The carrier may vary based on cost and service quality.
  • Delivery Scheduling: Most freight carriers attempt to contact you 1 to 2 days before delivery to schedule a drop-off time, but this is not guaranteed.

Delivery Options

  • Standard Delivery: Curbside delivery only. You are responsible for bringing the shipment inside.
  • Optional Upgrades: White Glove Service (inside placement) and Premium Installation Service (inside placement plus assembly and installation) may be available for an additional fee at checkout, subject to availability in your area. These services can add 2 to 5 business days for scheduling and coordination.

Pre Order and Special Order Items

  • If an item is pre order or out of stock, we will email or call to confirm you are comfortable with extended shipping times before your payment is processed.
  • Delivery timelines are estimates and may change due to production, freight, or carrier factors.
  • Outside the lower 48 states: We can often arrange shipping, but it is not part of our standard offering. Contact us for a custom quote.

Damages

InHouseWellness.com is not liable for products damaged or lost during shipping. If your order arrives damaged, contact the carrier immediately to file a claim, save all packaging and damaged goods, and we will assist with coordination and documentation as needed.

Warranty Included

InHouse Wellness extends the Cozy Heat manufacturer warranty to the original purchaser. Warranty coverage, terms, and remedies are set by Cozy Heat. Any warranty claims should be communicated directly to Cozy Heat.

Warranty Period

  • Cozy Heat sauna stoves: 24 months from the date of purchase (proof required via purchase receipt/invoice).

What Cozy Heat Covers

Cozy Heat’s warranty covers defects caused by manufacturing errors during the warranty period.

What’s Not Covered (Manufacturer-Stated Exclusions)

The warranty does not cover the following effects caused by the combined impact of temperature and steaming water:

  • Metal deformations
  • Effects on surface covering/finish
  • Effects on door glass

How to Start a Warranty Claim (Contact Cozy Heat)

Warranty claims should be submitted to Cozy Heat and should include:

  • Photos showing the defect
  • Copies of purchase documents (receipt/invoice)

The InHouse Wellness Difference

When you’re investing in premium wellness equipment, you want more than just a good deal—you want the right partner. Here’s why our customers trust us over anyone else:

  • Guaranteed Best Pricing – We work directly with manufacturers, so you never overpay. If you find a lower price, we don’t just match it—we beat it.
  • Unbeatable Shipping Times – Even if others claim faster delivery, we win. Your order ships either from our Austin, TX warehouse or straight from the manufacturer—fast, reliable, and trackable.
  • White Glove Delivery & Installation – We offer professional delivery, assembly, and installation so your new equipment is set up perfectly from day one.
  • U.S.-Based, Real Support – Our team is right here in the USA, ready to help by phone, text, or email—before, during, and long after your purchase.
  • Since 2011 – Over a decade of helping health and wellness consumers connect with top brands and the perfect products for their needs.
  • Factory Warranties Included – Full manufacturer coverage on every product, plus our help if you ever need to file a claim.
  • Exclusive Video & eBook Guides – From maintenance tips to usage tutorials, we give you the knowledge to get the most from your investment.

Bottom line: We don’t just sell equipment—we deliver the fastest shipping, the most reliable support, and the kind of buying experience you’ll tell your friends about.

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