Clean the Filters for Under-Bench RV SystemsUpdated 2 days ago
This article explains how to clean the anti-dust filters for Under-Bench RV Inverter Packaged Heat Pump Air Conditioners (PYR).
Remove the air filters, then wash them gently by hand with a detergent solution. Allow the filters to dry before reinserting them back into place.
Repeat this process every 30-45 days. 
If an optional active carbon filter is installed, replace them yearly.