Can I wash my HVAC filter? Selesthe Borbon January 24, 2023 21:36 It is important that you never wash your HVAC filter. Doing so will damage your filter, making them unusable. Related articles How often do I need to replace my AirDoctor HVAC filter? How to Clean Your Pre-Filter How much do AirDoctor HVAC filters cost? What if I don't like my AirDoctor HVAC filter? AirDoctor cost per speed per setting Comments 0 comments Article is closed for comments.