2 carrier heat pumps with air handlers. Downstairs unit installed in 2017. Heat strips are in range. X13 blower motor is good. Blower wheel and evap coil are clean. All electrical connections are tight. 70/7.5 dual run capacitor and contactor are good. Fan motor and compressor are good. Reversing valve and defrost control board are functioning as they should. Air flow and refrigerant levels are satisfactory. Upstairs unit installed in 2017. Heat strips are in range. X13 blower motor is good. Blower wheel and evap coil are clean. All electrical connections are tight. 35/5 dual run capacitor and contactor are good. Reversing valve and defrost control board are functioning as they should. Air flow and refrigerant levels are satisfactory. Both units need a drain switch.