Designed and built in Estonia, COZY sauna heaters are all about delivering an exceptional sauna experience. With up to 160 kg of stones, they produce soft, voluminous steam and retain heat for longer, ensuring a relaxing and consistent session every time.

Fully off-grid and requiring no electricity, COZY heaters are ideal for remote locations, cabins, or anyone seeking a traditional and self-sufficient sauna.

They’re built for efficiency, using at least 25% less firewood and producing six times cleaner emissions, which keeps your sauna and chimney cleaner.

Made from durable 5mm structural steel and certified to top European standards, each heater is built to last and backed by a 5-year warranty. 

Efficient. Powerful. Reliable. That’s COZY.

Key Features

• Available in both standard and through-the-wall configurations
• Fully off-grid – no electricity required
• Large rock mass ensures soft, rich steam for the best sauna experience
• Up to 25% less firewood consumption
• Six times cleaner smoke emissions with fewer flying ash particles
• Keeps the chimney cleaner and requires less maintenance
• Lower flue gas temperatures for improved safety and efficiency
• Efficient secondary airflow supports a longer burning process
• Extended lifespan with a 5-year warranty
• Certified to the highest standards: BimSchV 2, DIN 13240, EN 15821

Documentation

COZY user manual

COZY12 drawings

COZY18 drawings

COZY12 declaration of performance

COZY18 declaration of performance