Carrier heat pump with air handler installed in 2015. All electrical connections are tight with no corrosion. Heat strips are pulling proper amperage. Blower motor is acceptable. Evaporator coil is clean. UV bulb needs to be replaced. 60/5 dual run capacitor is within tolerance. Compressor and condenser fan motor are acceptable. Refrigerant levels are in range. Highly suggest a compressor saver to help the system start up and run more efficiently.