Preformed a winter maintenance on a 3 Ton Ruud heat pump. Indoor unit: I checked amps on blower motor and heat strips, I checked coils, I checked drain pan and drain line, I checked both float switches, I checked I checked for rubbed wires, I checked for bacteria, I noticed a light amount of bacteria on the wires and the door panel, I wiped everything down. Outdoor unit: I checked amps on compressor and fan motor, I checked capacitor, I checked around the contactors and the board, I looked into the unit for rubbed wires, I vacuumed the drain line and washed the unit down with water.