Came out today to do a full HVAC inspection for buyer. The home is for sell. System is a split system a natural gas furnace and ac/coil. Changed (16x25x1) system filter. This is a two zone system. Checked over all operations of heating unit, inducer draft motor amps tested good, blower amps were high due to very dirty blower wheel. Blower motor capacitor testing in a very weak range. Duct system has a lot of dirt build up inside of it. There is a pan float switch on system, there is no in line float switch on drain line. Both zone dampers are opening up properly with no issues. Zone board is located in attic and is working properly. Duct system is in good shape no signs of air leaks. Checked operations for ac unit, condenser coil is very dirty, outdoor capacitor testing in a very weak range, contactor is very pitted and weak as well. System is cooling had a 20 degree split between the supply and return of system. Recommend blower wheel cleaning, new blower motor capacitor, cleaning du