Annual Maintenance

Check evaporator coil Check fan motor Set manifold pressure Monitor expansion valve Check start and run capacitors Test fan limit switch Clean evaporator drain Check duct  runs Inspect blower wheel Adjust dampers Monitor refrigerant level Check for air leaks in attic Clean or replace filters Tighten electrical connections Measure voltage differences Check flame Evaluate safety controls Measure amperage draw Clean combustion chamber Measure temperature difference Clean and adjust burners Check heat exchanger Clean condenser coil Evaluate vent system Clean Flame Sensor Adjust thermostat calibration Measure gas input Check combustion air Check fan blades for tightness Check supply & return for air leaks  Check for Carbon Monoxide