Performed preventative maintenance Located unit in garage Inspected and tightened electrical. Inspected uv light. Inspected blower wheel. Inspected evaporator coil. Cleared drain line and pan. Calibrated and tested thermostat. Cycled heating. Took amperage of heat strip and indoor motor. Cycled cooling. Tested float safety. Took temperature difference. Need 10 ft ladder to access attic. Located condenser onside of garage Inspected and tightened electrical. Inspected surge protection. Checked capacitor. Rinsed condenser coil. Cleared debris from condenser housing. Checked refrigerant levels. Took amperage of outdoor motor and compressor. Condenser coil is starting to deteriorate due to age. System operating to factory standard.