Cooling Maintenance: (1) Condenser fan motor is operating within manufacturer specifications. (2) Compressor is operating within manufacturer specifications. (3) The contactor is okay. (4) The system doesn't contain a battery cap. (5) Refrigerant levels are good. Refrigerant type is R-410a. (6) The outdoor coil was cleaned. (7) The internal service compartment was cleaned. (8) Cleaned out the condensate line. (9) Found no damaged wires. (10) Tightened the wire connections. (11) The filter was replaced. Heating Maintenance: (1) The blower motor is operating within manufacturer specifications. (2) The blower housing is clean. (3) Filter was replaced. (4) The condensate lines are sealed and cleared. (5) Wires are in good condition. (6) Tightened eletrical fittings. (7) Gas line is secure. (8) Fire safety devices are operating properly. (9) Combustion motor is operating within manufacturer specifications. (10) The exhaust vent is clear of debris. (11) Return and supply plenums are seale