Through-Wall Firebox: Allows firewood to be loaded from outside the sauna room or an adjoining space.

Two Output Options: Available in 12 kW and 18 kW configurations for sauna rooms from 210 to 635 cu. ft.

Square Open-Stone Design: Distinctive geometric construction combines substantial stone capacity with clean architectural lines.

Large Viewing Window: Glass heater door provides visibility into the fire from the loading side.

Wood-Burning Operation: Provides traditional solid-fuel sauna heating without an electric sauna heater or external heater control.

High-Capacity Stone Design: Requires a minimum of 175 lb of stones for the 12 kW model and 265 lb for the 18 kW model.

5 mm Stainless Steel Flame Cutter: Heavy-duty component designed for the high-temperature environment inside the stove.

Steel Construction: Durable construction designed for wood-fired sauna environments.

Efficient Combustion: Cozy states that its design can use approximately 25–40% less firewood than comparable sauna stoves.

Lower-Emission Design: Cozy describes its combustion system as producing significantly cleaner smoke gases.

Floor-Standing Through-Wall Installation: Designed for floor mounting with the firebox extending through the applicable wall.

Top Flue Connection: Manufacturer specifications identify a top flue connection.

Made in Estonia: Designed, engineered, and handmade in Estonia.

2-Year Warranty: Backed by a limited 2-year warranty.

Model: COZY QUATTRO TW

Product Type: Through-Wall Wood-Burning Sauna Stove

Available Outputs: 12 kW / 18 kW

Overall Sauna Room Range: 210–635 cu. ft.

Primary Fuel: Wood

Installation: Floor-Standing, Through-Wall

Firebox Configuration: Through-Wall / External Loading

Design: Square Open-Stone Construction

Construction: Steel

Flame Cutter: 5 mm Thick Stainless Steel

Flue Connection: Top

Heater Door: Glass

Sauna Stones: Required, Sold Separately

12 kW Stone Requirement: Minimum 175 lb

18 kW Stone Requirement: Minimum 265 lb

Country of Manufacture: Estonia

Warranty: Limited 2 Years

Included

• Cozy Heat Quattro-TW Wood-Burning Sauna Stove
• Outer Frame
• Chimney Pipe
• Heater Body
• Cleaning Hatch
• Heater Door with Glass
• Ash Box
• Installation and Operation Manual
• 2-Year Limited Warranty

Sauna stones are required and sold separately. The included chimney pipe should not be assumed to constitute a complete chimney/flue system. Through-wall construction and additional site-specific chimney and fire-protection components may be required.

Cozy Heat Quattro-TW 12 kW Sauna Stove

Width: 17.3 in (44 cm)

Depth: 26.1 in (66.3 cm)

Height: 27.6 in (70 cm)

Overall Dimensions: 17.3 W × 26.1 D × 27.6 H in (44 × 66.3 × 70 cm)

Stove Weight: 159 lb (72.1 kg)

Cozy Heat Quattro-TW 18 kW Sauna Stove

Width: Not provided in the standalone technical table

Depth: Not provided in the standalone technical table

Height: Not provided in the standalone technical table

Overall Dimensions: Not confirmed in the supplied standalone technical table

Stove Weight: Not provided in the standalone technical table

Shipment: This sauna heater system ships via scheduled freight delivery. The shipment arrives secured on a wooden pallet and protected with three-ply cardboard packaging.

Delivery: A delivery appointment is required. The freight carrier provides delivery service only, with limited assistance available at the delivery location.

Delivery Requirements: Prior to shipment, we may contact you to confirm delivery details and identify any access restrictions or special handling requirements that may affect delivery.

Shipping Rate: Shipping costs are determined based on location.

Accessory Freight: Eligible sauna accessories may be consolidated with the heater shipment to help minimize separate freight charges.

Cozy-Heat-Sauna-Stove-IOM-9.2026.pdf