Cozy 12 O-TW Wood-Burning Sauna Stove

Cozy 12 O-TW Wood-Burning Sauna Stove

The Cozy 12 O-TW is a 12 kW wood-burning sauna stove for sauna rooms of approximately 6–12 m³. Its through-wall external loading tunnel lets you tend the fire from an adjoining space, helping to keep the sauna room clear while delivering the traditional heat and steam of a wood-fired sauna.

Key Benefits

• External loading tunnel for through-wall installation
• 12 kW output for compact and medium-sized garden saunas
• Large 110 kg stone capacity for a gentler, more sustained sauna experience
• Top flue connection designed for a 115 mm chimney pipe
• Suitable for firewood up to 33 cm long

Technical Specifications

• Brand: Cozy
• Model: 12 O-TW
• Heater type: Wood-burning sauna stove with external loading tunnel
• Power: 12 kW
• Recommended sauna volume: 6–12 m³
• Stone capacity: 110 kg
• Flue connection: Top, 115 mm
• Maximum firewood length: 33 cm

Designed for Your Sauna

This is a practical wood-burning sauna heater for a compact garden sauna or a medium-sized barrel sauna where loading the fire from outside the hot room is preferred. The open stone mass stores heat and helps produce a softer steam when water is ladled over the stones.

Installation & Chimney Requirements

A suitable chimney system is required. Installation must follow the manufacturer’s instructions, the specified safety clearances and applicable UK Building Regulations. Use a competent installer and confirm the flue route, wall penetration and ventilation requirements before installation.

Sauna Stones

Sauna stones are not included and must be purchased separately. Use stones suitable for sauna heaters and follow the manufacturer’s loading guidance.