Zehnder ComfoAir Flex 350 with Pre-Heater 990 320 031 These can be purchased by

These can be purchased by clicking this LINK

Vent Axia Astra Heat recovery Unit Replacement filter set comprising 2 G3 filters for all Astra models 443889

VIGOR PLUS SET UWA-2E

If your unit is near a main road / high pollen area you may want to change more often

Zehnder ComfoAir Flex 350 with Pre-Heater 990 320 031 These can be purchased byThe Zehnder ComfoAir Flex has been developed as an ideal solution for apartments and small dwellings, where an efficient use of space for living is important. Thanks to its compact design with minimal dimensions of 1068 x 868 x 299 mm (L x W x H), the Zehnder ComfoAir Flex enables space saving installation in suspended ceilings for a harmonious integration into any apartment. The Zehnder ComfoAir Flex delivers an impressive performance with air