Efficient, quiet, and intelligent Zehnder ComfoAir Q ushers in a new era of ventilation units. Whether new build or renovation the unit provides a healthy indoor climate for single and multifamily houses. Zehnder ComfoAir Q is equipped with a diamond shaped heat exchanger with a larger surface for maximum heat recovery and less resistance for low energy consumption. The quietest fans on the market and optimal airflow ensures an almost noiseless ventilation experience. Left- or right-hand unit configuration combined in one device, provides planning and installation flexibility.