Fall heater maintenance one system heat pump (upstairs only). Upon arrival the system was turned on in emergency heat mode. At the indoor unit the blower motor, evaporator coil, heat strips, duct work, and electrical connections were all inspected. The system was then turned on in heat mode and at the outdoor unit the compressor, fan motor, condenser coil, electrical connections, and refrigerant charge were all inspected. The filter was changed with one provided by the homeowner. The system is heating properly at this time.