Fridgeaire 4 ton heat pump 5 kw electric heat Air handler blower meets manufacturer specifications spoke with customer about replacing yearly uv light bulb and moved existing bulb to apex of evaporator coil flushed drain line added drain pan treatment also spoke with customer about duct work do to age and high static pressured ..82 supply pressure is .75 Wasn’t installed in do anything today used duct fresh on evaporator coil Condenser all motor amps meet manufacturer specifications refrigerant level is questionable so do liquid line dryer rusting at condenser washed condenser coil Would strongly recommend have a field supervisor out to quote duct repair or replacement Please do a google review today Thanks so much for your business and being the best part of AirNow Jesse Piper Large drain pan treatment