Residential ventilation with heat recovery for efficiency and comfort

The quality of life and work in confined spaces depends in part on controlled air exchange. However, ventilation by opening windows is haphazard ventilation—it results in either too much or too little ventilation, and therefore wastes energy. A mechanical ventilation system provides continuous air exchange and reduces CO₂ concentrations in living spaces to less than 0.1 percent by volume. Residents perceive this as “fresh air.” This means windows can remain closed year-round. This provides increased safety and quiet for residents, as street noise remains outside.

Mechanical ventilation with heat recovery of exhaust air

Modern mechanical ventilation systems are extremely energy efficient: A powerful heat exchanger recovers up to 98 percent of the latent heat in exhaust air and uses it to warm incoming fresh air. This prevents heat loss through emergency ventilation during cold weather, and constant air exchange ensures consistently high indoor air quality. A significant reduction in energy consumption significantly improves the family budget. CO₂ emissions are also reduced.

Central mechanical ventilation with heat recovery in a new building

Every new building equipped with mechanical ventilation has a central unit that supplies fresh air to all rooms through a duct system. In most cases, the duct system is concealed in the floor or built into the walls, with only the air diffusers visible. The air exchange rate is automatically regulated by the central ventilation unit. It operates silently and isolates from outside noise.

Mechanical ventilation with heat recovery

Advanced mechanical ventilation systems continuously change the air in living spaces to create a healthy, comfortable indoor environment and remove odors and harmful substances. They are also extremely energy efficient: a powerful heat exchanger recovers up to 98 percent of the latent heat in the exhaust air and uses it to warm the incoming fresh air during colder months.

Thanks to efficient DC motors, 15 times more thermal energy is recovered per kWh of electricity. For a living space of 150 m², savings can amount to approximately 300 liters of fuel oil per year. In summer, the heat exchanger is completely bypassed via a built-in bypass damper: A temperature-controlled circuit allows cool, filtered outside air to enter the living space at night.