Steps

1. Remove the filters
2. Spray antibacterial spray everywhere behind the filters (see: Firclim brand)
3. Set the unit to cooling mode at 18 degrees with the fan on full blast to prevent condensation
4. Wash the filters and the hood
5. As soon as there is no more foam, turn off the air conditioning and replace the filters

Warning

1. To be done every time the operating mode changes, so when switching from hot to cold and vice versa