Cozy Heat COZY TW Thru-Wall Wood Sauna Stove 12kW or 18kW

• Thru-wall (TW) wood-burning sauna stove design
• 12 kW kilowatt rating
• Designed for sauna rooms from 210 to 423 cu ft
• Primary fuel: wood
• Floor mount installation
• Top flue connection location
• Steel construction
• Black color
• Mild and long-lasting heat design intent
• Designed for pouring water over hot stones to create steam
• Feed/stoke firewood from outside the sauna room (thru-wall use)
• Flame cutter made of 5 mm-thick stainless steel
• Smoke gases specified as 6x cleaner (series claim)
• German BIMSCH certificate (series claim)
• Stove specified as using 25%–40% less fuel than comparable sauna stoves (series claim)
• Minimal safety distances (series claim)
• Minimum stone requirement: 265 lbs (for 12 kW model)
• Heater door with glass
• Ash box included
• Cleaning hatch included
• Outer frame of the heater included
• Chimney pipe included
• Heater body included
• Installation and operation manual included
• 2-year warranty

• Model: COZY TW
• Variant / Rating: 12 kW
• Primary Fuel: Wood
• Sauna Room Size: 210–423 cu ft
• Minimum Room Height: 72 in (1828 mm)
• Maximum Firewood Length: 12.95 in (329 mm)
• Firewood Diameter: 3.15–4.72 in (80–120 mm)
• Stove Width: 16.92 in (430 mm)
• Stove Height: 27.55 in (700 mm)
• Stove Depth: 25.98 in (660 mm)
• Stove Length / Depth (from Door): 24.41 in (620 mm)
• Heater Weight: 126 lbs
• Shipping Weight (with Sauna Stones): 368 lbs
• Rock / Stone Capacity Requirement: 265 lbs
• Safety Distance (Sides): 6.69 in (170 mm)
• Safety Distance (Back): 9.05 in (230 mm)
• Safety Distance (Front): 19.68 in (500 mm)
• Materials/Finish: Steel construction, black color
• Warranty: 2-year warranty

If you want a traditional sauna heat source with hands-on control, COZY TW 12 kW is purpose-built for the wood-fired routine—bring the stone mass up to temperature, then add water for steam as needed. The thru-wall design is a practical differentiator: you can load and manage the fire from outside the hot room, helping keep the sauna space cleaner and more comfortable during sessions.
From a build perspective, the stove is specified as steel construction with a durability-focused 5 mm stainless-steel flame cutter, and it includes functional components like a glass door, ash box, and cleaning hatch to support regular use. The size and rating target 210–423 cu ft sauna rooms, making it a fit for many small-to-mid traditional sauna layouts where wood heat is preferred.
At the brand level, Cozy Heat positions these stoves around classic sauna bathing—wood-fired heat, stone-driven steam, and install guidance intended to support safe operation. If your sauna plan supports a thru-wall layout and you want a wood-fired experience without loading wood in the hot room, this configuration is built specifically for that use case.

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.

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)

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.