Performed a two system cooling maintenance on a 1999 Lennox & a 2015 Trane the ODT is 79°.Tested overall operation of equipment confirming the indoor & outdoor equipment was both fully operational.There are two 16x20x1 which were gently used not showing any signs of being discolored or clogged the filters were not replaced on this visit spares were left.Blower motor was fully operational not showing any signs of being intermittent or dropping out.Capacitor was tested confirming it was in specifications.Blower wheel was inspected finding it to be dirty when a blower wheel gets dirty it minimizes the efficiency of equipment along with places a strain on equipment and parts which shortens the lifespan of both a quote has been provided to clean blower wheel.Inspected indoor evaporator coil finding it to be dirty when a indoor evaporator coil gets dirty it minimizes the efficiency of equipment along with can affect the ability to heat/cool properly a quote has been provided to clean indoor