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Description

Cozy Heat COZY 12 SW-TW is a wood-burning, thru-wall sauna stove rated at 11.5 kW with 120 kg stone capacity, designed to deliver a mild, long-lasting sauna heat in a 6–13 m³ hot room range. Its through-the-wall loading keeps firewood handling outside the sauna room while you enjoy steady warmth and satisfying steam.

Built for traditional sauna bathing, the COZY 12 SW-TW is designed for the classic ritual of ladling water onto hot stones to create rich, comfortable steam. The stove’s stone mass is intended to support long-lasting heat and responsive löyly, while the thru-wall configuration helps keep the sauna space cleaner by moving fueling and wood storage to the adjacent room. The unit is a floor-mounted thru-wall stove, with a top flue connection for chimney routing, and a heater door with glass to monitor the fire.

Included components focus on core installation and operation: outer frame of the heater, chimney pipe, heater body, cleaning hatch, heater door with glass, ash box, and installation and operation manual. Stove stones are not included, allowing you to select stone type and size appropriate for your installation and preferences.

Cozy Heat designs wood sauna stoves around traditional sauna comfort—steady heat, durable construction, and practical details that support everyday use. The COZY line emphasizes efficient combustion design and straightforward operation for sauna owners who want the feel of a wood-fired sauna experience with a thru-wall layout that fits many purpose-built sauna rooms.

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
  • Thru-wall (SW-TW) configuration for loading from outside the sauna room
  • Floor-mounted installation
  • Mild and long-lasting heat design for traditional sauna bathing
  • Designed for pouring water over hot stones to create steam
  • Steel construction
  • Flame cutter made from 5 mm thick stainless steel
  • Heater door with glass
  • Ash box included
  • Cleaning hatch included
  • Chimney pipe included
  • Outer frame of the heater included
  • Heater body included
  • Installation and operation manual included
  • Top flue connection location
  • Power (technical data): 11.5 kW
  • Kilowatt option listed: 12 kW
  • Recommended sauna size: 6–13 m³
  • Declared sauna room volume: 6.6–12 m³
  • Sauna room size listing (12 kW option): 210–423 cu ft
  • Stone capacity: 120 kg
  • Minimum stone requirement (12 kW option): 265 lb
  • Stove stones not included
  • Fuel type: natural wood logs
  • Fuel length listing: wood logs up to 30 cm long
  • Max fuel load: 8 kg
  • Stove utilizes 25%–40% less fuel than comparable sauna stoves
  • Smoke gases listed as 6x cleaner compared to similar heaters
  • Minimal safety distances listed
  • Safety distance to combustible material (to ceiling): 1130 mm
  • Safety distance to combustible material (to sides): 170 mm
  • Safety distance to combustible material (to front): 500 mm
  • Safety distance to combustible material (to back): 230 mm
  • German BIMSCH certificate listed
  • Tested to EN 15821:2010 (listed)
  • BImSchV (2nd stage) compliance listed
  • 2-year warranty listed

Dimensions & Specifications

  • Model: COZY 12 SW-TW
  • SKU: 4745010348068
  • Primary Fuel: Wood
  • Output (technical data): 11.5 kW
  • Output option listed: 12 kW
  • Sauna size (recommended): 6–13 m³
  • Sauna room volume (declared): 6.6–12 m³
  • Sauna room size listing (12 kW option): 210–423 cu ft
  • Stone capacity: 120 kg
  • Dimensions (WxDxH): 19.29 in x 27.16 in x 32.12 in
  • Stove Width: 19.29 in (490 mm)
  • Stove Depth: 27.16 in (690 mm)
  • Stove Height: 32.12 in (816 mm)
  • Heater Weight: 161 lb
  • Shipping Weight with Sauna Stones: 425 lb
  • Flue Connection Location: Top
  • Fuel length listing: wood logs up to 30 cm long
  • Max fuel load: 8 kg
  • Safety distance to combustibles (ceiling): 1130 mm
  • Safety distance to combustibles (sides): 170 mm
  • Safety distance to combustibles (front): 500 mm
  • Safety distance to combustibles (back): 230 mm
  • Certification listed: German BIMSCH
  • Standards listed: EN 15821:2010; BImSchV; DIN EN 13240 level 2
  • Warranty: 2-year

Why Choose Cozy Heat?

This stove is a practical fit when you want the feel and steam of a wood-fired sauna while keeping fueling and wood handling outside the hot room. The thru-wall layout supports cleaner sauna sessions, and the large stone load is intended to provide steady heat with the ability to generate satisfying steam when water is ladled onto the stones.
At the brand level, Cozy Heat focuses on traditional wood sauna heating with durability-driven construction details and combustion design aimed at efficient, clean burning. The COZY line is built for sauna owners who prioritize wood-fired atmosphere, straightforward operation, and a stove format that integrates into purpose-built sauna rooms.

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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