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

• Wood-burning sauna stove
• Thru-wall (TW) design with combustion chamber extension
• Floor/thru-wall installation type
• 12kW rating
• Sauna room sizing: 210 to 423 cu. ft.
• Intended for dry or humid sauna heat
• Designed for pouring water over heated stones for steam
• Steel construction
• Color/finish: Black steel
• Glass stove door
• Top flue connection location
• Combustion design separates combustion air into multiple paths
• Stove stones required for operation
• Required stones type (sold separately): Split faced stones
• Required stones type (sold separately): Round stones
• Rock/stone capacity: 265 lb
• Maximum firewood length: 12.95 in (329 mm)
• Firewood diameter range: 3.15 in to 4.72 in (80 mm to 120 mm)
• Minimum room height: 72 in (1828 mm)
• Safety distance (sides): 6.69 in (170 mm)
• Safety distance (back): 9.05 in (230 mm)
• Safety distance (front): 19.68 in (500 mm)
• Includes ash box
• Includes cleaning hatch (stove maintenance access)
• Includes safety cloth for handling hot components
• Chimney pipe diameter: 114 mm (4.48 in)
• Not suitable for installation in a shared flue system
• Warranty: 2-year warranty (consumer use)
• Certification/listing: German BIMSCH certificate
• Tested/listed to EN 15821:2010
• Referenced standards include DIN EN 13240 (level 2)
• Referenced emissions regulation: BImSchV
• Sell package quantity: 1 EA
• Fuel type: Wood

• Model: COZY QUATTRO TW
• Item Number / MPN: COZYQUATTROTW12
• Fuel Type: Wood
• Kilowatt Rating: 12kW
• Room Volume: 210–423 cu. ft.
• Construction Material: Steel
• Color / Finish: Black steel
• Installation Type: Floor/Thru-Wall
• Flue Connection Location: Top
• Rock Capacity: 265 lb
• Maximum Firewood Length: 12.95 in (329 mm)
• Firewood Diameter: 3.15–4.72 in (80–120 mm)
• Stove Length/Depth (from Door): 24.60 in (625 mm)
• Stove Length/Depth (from Handle): 26.18 in (665 mm)
• Stove Width: 17.32 in (440 mm)
• Stove Height: 27.55 in (700 mm)
• Product Weight: 159 lb
• Shipping Weight: 424 lb
• Minimum Room Height: 72 in (1828 mm)
• Safety Distance (Sides): 6.69 in (170 mm)
• Safety Distance (Back): 9.05 in (230 mm)
• Safety Distance (Front): 19.68 in (500 mm)
• Warranty: 2-year warranty (consumer use)
• Certifications & Listings: German BIMSCH certificate

If you want wood-fired sauna heat but prefer not to bring firewood, ash, and tending activity into the hot room, the thru-wall (TW) layout is the practical difference. You get a 12kW stove sized for 210–423 cu. ft. sauna rooms, plus a 265 lb stone capacity that supports steam sessions when you ladle water over the stones.
Cozy Heat’s COZY stove lineup is built around sauna-appropriate fundamentals—stone-based heat, wood-log firing, and combustion airflow design intended to support efficient burning. The result is a stove format meant for repeat use in a sauna environment, with specifications and installation guidance tied to recognized testing standards.
Over the long term, this stove supports a straightforward ownership experience: stock the correct stones, plan the chimney path around a top flue connection, and build your layout so loading from outside the sauna is convenient. It’s a clean way to keep your sauna session focused on bathing while still getting the traditional feel of wood heat.

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.