W3/W4 filter set

Allergy filters for even cleaner supply air. Suitable for Swegon CASA W3 and W4 air handling units.

The anti-allergy filter set includes:

• 1 Filter class ISO ePM1 70 % (F8) for supply air
• 1 ISO coarse (G3) for extract air

Please note that a separate setting of the unit is necessary and that filters must be replaced more often than standard filters.

Spare part code W304FSF8

Choose original Swegon CASA filters!

Using original filters ensures that your device has a valid factory warranty.

How often should filters be changed?

Filters should be changed at least once a year, but preferably twice a year – in spring and autumn.

How to change filters?

Replacing the filters is quick and easy and requires no tools or specialist knowledge. For more information, please refer to the maintenance manual or service video below.

Visit CASA W3 Genius and CASA W4 Genius the latest equipment.

Filter replacement guide FS_GUIDE