Technical information

Airflow is important for perfect sauna

For proper function of your sauna heater and for efficiency and longevity of your sauna, well-tuned ventilation is a must. Different types of sauna heaters and rooms require different principles for ventilations.


Natural Draught Ventilation

The Architecture

This type of ventilation uses thermal energy form rising heat to vent the sauna room properly. To ensure proper function, an inlet vent is placed below the sauna heater and an extraction vent is placed opposite, just below the ceiling.

The Dynamics

Enjoy a cooler floor and lower bench, and hotter the higher up you sit. No appliance is needed for it to work. No servicing and no extra power is required.

The Heaters

Our heaters are designed to specifically work in conjunction with natural draught ventilation. This ventilation suits all of our heaters.

Forced Air Ventilation

The Architecture

Uses an electric fan to draw air through the sauna room. The fresh air inlet is placed just above the sauna heater or on the ceiling and the extraction vent is placed opposite on the floor. A second extraction vent is placed just below the ceiling but is kept in its closed position when sauna bathing.

The Dynamics

The electric fan provides an even temperature in the sauna room. It is an easy and efficient way to obtain similar temperature at all benches.

The Heaters

All Helo heaters may be installed in a sauna room using forced air ventilation, Tylö Sense, Tylö Expression and wood burning heaters on the other hand require natural ventilation.


Find your sauna or steam solution

Visit our dealers for more information