Zehnder Manuals & User Guides

Zehnder Group is an international leader in the field of indoor climate solutions, tracing its roots back to 1912 in Switzerland. The company develops and manufactures products designed to create healthy, comfortable, and energy-efficient environments for residential, commercial, and industrial spaces.

Zehnder's comprehensive product portfolio includes comfortable indoor ventilation systems with heat recovery, decorative radiators, heating and cooling ceiling systems, and industrial air cleaning units. Known for Swiss precision and quality, Zehnder provides integrated solutions that ensure fresh air and optimal temperatures while reducing energy consumption.

• How often should I change the filters in my Zehnder ventilation unit?

  Filters should be checked regularly and typically replaced every 6 months, or when the filter alarm on the control unit is triggered, to ensure optimal air quality and system performance.

• What does the automatic bypass function do?

  On units like the Zehnder EVO, the automatic bypass allows cooler outdoor air to bypass the heat recovery system during summer nights, helping to cool the indoor environment naturally.

• Can I install a Zehnder ventilation system myself?

  It is strongly recommended that Zehnder systems be installed by a specialized engineer in accordance with local building and safety regulations to ensure proper operation and to maintain warranty validity.

• Where is the condensate drain located on Zehnder EVO units?

  The condensate drain connection point varies by model but is generally located at the bottom of the unit. Ensure it is connected to a drain system with a siphon to prevent odors and verify it is protected from frost.