Lennox heat pump with air handler installed in 2019. All electrical connections are tight with no corrosion. PSC blower motor and capacitor are acceptable. Blower wheel and evaporator coil are clean. Heat strips are pulling proper amperage. Dual run capacitor and primary electrical control are acceptable. Compressor and condenser fan motor are running as they should. Refrigerant levels are in range. Compressor saver and a panel mounted surge protection were installed on this visit.