ComfoAir Q

MVHR filters should be maintained regularly, every 3 to 6 months, in order to maintain the air flows and keep the energy use to a minimum. As the Zehnder ComfoAir Q system is volume flow constant, soiled filters, pressure changes and other factors will neither cause an imbalance nor reduced ventilation, which is an integral part of a high quality system. Clogged up filters will therefore result in an increased energy use as the MVHR has to work against the resistance of the filters, in order to keep the air flow at the same level. If the filter medium is fully covered in dust, it is high time to clean or change the filters. Another indication that the filters need to be checked is an increase in fan noise.

In most cases filters can be cleaned out with a vacuum cleaner (with brush attachment). If the filter cannot be cleaned e.g. when covered in grease or soot, it needs to be replaced. All filters should be completely changed over at least once a year.

MVHR filter:
1. Open the dark maintenance cover and take out the filter covers of the ComfoAir Q unit.
2. Access the menu and go to filter changes.
3. Take out the filters by pulling on the little triangular corners (please be careful not to touch or inhale the dust) and place the soiled filters in a bin liner, seal and discard
4. Insert clean filter with the arrow mark on the filter pointing upwards.
The pollen filter should be inserted on the intake side of the MVHR which is in most cases the side with the insulated ducts which leads to the outside.
5. Replace all covers and switch MVHR back to normal operation.