Cozy Heat Quattro Thru-Wall Sauna Stove
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The Cozy Quattro TW Wood Sauna Stove is a high-performance wood-burning heater engineered for medium and large traditional saunas. Built from durable Finnish steel with a spacious firebox and high-efficiency burn chamber, the Quattro TW produces intense, even heat and luxuriously soft steam. Its large rock capacity and integrated water tank create a complete, authentic sauna experience that reflects true Finnish craftsmanship.
Key Features
- High-output wood-burning sauna stove ideal for medium to large sauna rooms
- Large glass fire-view door provides ambiance and visible flame control
- Integrated water tank heats water during operation for washing or steam enhancement
- Heavy-duty steel construction ensures durability and consistent high-temperature performance
- Efficient heat-to-rock transfer for powerful löyly and fast heat-up times
- Crafted in Finland by Cozy, a trusted manufacturer of premium sauna heating equipment
Required Components
- Sauna Stones: Minimum 176 lbs. Natural, angular peridotite or olivine stones recommended for optimal airflow and steam quality.
- Chimney System: A compatible chimney and flue kit rated for wood-burning sauna stoves is required for safe installation.
What’s Included
- Cozy Quattro TW wood-burning sauna stove
- Integrated 22-liter water tank
- Glass fire-view door, ash drawer, and grate system
- Installation and Operation Manual
- Manufacturer Warranty
Specifications: Cozy Quattro TW 12 kW
| Model | Cozy Quattro TW 12 kW |
| Heater Type | Wood-burning sauna stove with water tank |
| Power Output | 12 kW |
| Sauna Room Size | 353 to 706 cu ft (10 to 20 m³) |
| Stone Capacity | 176 lbs (80 kg) |
| Water Tank Volume | 22 liters (5.8 gallons) |
| Dimensions (W x D x H) | 20.5 in x 20.5 in x 29.3 in (520 mm x 520 mm x 745 mm) |
| Weight | 132 lbs (60 kg) |
| Flue Connection | 115 mm (4.5 in) top exit |
| Origin | Made in Finland |
Specifications: Cozy Quattro TW 18 kW
| Model | Cozy Quattro TW 18 kW |
| Heater Type | Wood-burning sauna stove with water tank |
| Power Output | 18 kW |
| Sauna Room Size | 494 to 988 cu ft (14 to 28 m³) |
| Stone Capacity | 176 lbs (80 kg) |
| Water Tank Volume | 22 liters (5.8 gallons) |
| Dimensions (W x D x H) | 20.5 in x 20.5 in x 29.3 in (520 mm x 520 mm x 745 mm) |
| Weight | 141 lbs (64 kg) |
| Flue Connection | 115 mm (4.5 in) top exit |
| Origin | Made in Finland |
Why Choose the Cozy Quattro TW?
- Authentic wood-burning heat provides a traditional Finnish sauna experience
- Large rock and water tank capacity for powerful steam and convenient hot water usage
- Reliable Finnish construction built for longevity and consistent performance
Shipping and Returns
- Ships: Typically within 3 to 7 business days
- Delivery: Free standard U.S. shipping
- Returns: 14-day return policy for unused items
Frequently Asked Questions
How large of a sauna will the Cozy Quattro TW heat?
The 12 kW model heats sauna rooms that measure 353 to 706 cubic feet. The 18 kW model supports larger sauna rooms between 494 and 988 cubic feet. Proper insulation improves heat-up time and performance.
Does the Cozy Quattro TW require a chimney?
Yes. A certified wood-burning sauna chimney system is required. Install a compatible flue pipe, heat shield, and chimney kit rated for sauna stoves and approved by local building codes.
How much water does the integrated tank hold?
The built-in water tank holds 22 liters (5.8 gallons). It naturally heats during operation and can be used for washing, warming ladles, or adding enhanced steam.
What type of stones should I use?
Use 176 pounds of natural peridotite or olivine sauna stones. These stones provide strong heat retention and airflow. Do not use river rocks or artificial stones.
What kind of maintenance is required?
Empty the ash drawer regularly, check the firebox and grates, and inspect chimney draw. Replace cracked stones to maintain efficient heating and protect the stove.
Can this stove be used in an indoor or cabin sauna?
Yes. The Cozy Quattro TW is designed for indoor installation in traditional wood-lined saunas, cabins, cottages, and off-grid locations. Always follow local building, clearance, and fire safety requirements.
How long does it take to heat the sauna?
Most saunas heat in 45 to 75 minutes depending on room size, insulation, stone placement, and wood type. The 18 kW model may heat faster due to higher output.
Is the glass viewing window heat-resistant?
Yes. The door uses tempered, heat-resistant glass that allows fire viewing while maintaining safe operation and a relaxing sauna atmosphere.
Is professional installation required?
Professional installation is strongly recommended. A qualified installer ensures correct chimney setup, safe clearances, and compliance with regional codes for wood-burning appliances.
Why Buy From Us
FAQs
Shipping & Delivery
Free curbside shipping on all orders. White-glove delivery/setup available at checkout in most areas. We’ll confirm your preferred date after purchase.
Warranty
Full manufacturer warranty, registered at purchase. Need help with a claim? Our U.S. support team handles it directly with the brand.
Returns
New, uninstalled items can be returned within the brand’s policy window. We’ll help coordinate pickup and any restocking requirements.
Installation & Power
Most saunas/hot tubs require dedicated circuits. We provide spec sheets and can recommend licensed installers in your area.
