Residential HVAC Tune Up 1. General System Inspection & Safety Checks. Conduct a thorough inspection of the HVAC system including all components, such as compressors, coils, fans, and controls. a. Visual inspection of the indoor and outdoor units b. Checking for leaks, loose connections, and signs of wear c. Inspecting refrigerant lines for insulation damage d. Testing the thermostat for proper function 2. Air Conditioning (Cooling System) Maintenance a. Cleaning the condenser coil to improve heat transfer b. Checking and adjusting the refrigerant levels (charging if necessary) c. Inspecting and tightening electrical connections d. Measuring capacitor performance and checking for weak components e. Lubricating moving parts like fan motors and bearings f. Checking the compressor operation g. Cleaning and unclogging the condensate drain line to prevent leaks h. Testing the fan motor and blades for proper airflow i. Measuring temperature differentials across the coil j. Inspecting and testing safety controls 3. Heating System (Furnace or Heat Pump) Maintenance a. Cleaning and inspecting the burners (for gas furnaces) b. Testing ignition and flame sensors c. Inspecting the heat exchanger for cracks or carbon monoxide leaks d. Checking gas pressure and connections e. Lubricating blower motor and fan bearings f. Cleaning the blower assembly for optimal airflow g. Testing the limit switches for safe operation h. Inspecting the flue and vent system for obstructions...