Today I arrived on site and performed a summer tune-up. The system is currently working properly. **Maintenance Actions:** * Replaced the 20x25 pleated filter using customer-supplied spares. * Cleaned the outdoor coil. * Cleared the condensate drain line. * Cleaned out the primary and secondary drain pans. * Tested the safety switch. * Dusted the return grills and thermostat. * Checked the thermostat batteries and tested its operation. **Component Inspections & Testing:** * Verified proper operation and amperage of the blower motor, compressor, blower run capacitor, compressor run capacitor, fan run capacitor, contactor, electrical wiring, and defrost control board. * Confirmed the blower wheel, burners, exhaust flue, heat exchanger, primary drain pan, secondary drain pan, secured electrical wires, and ductwork are in good condition and working properly. **Temperature Readings:** * Return air temperature: 75.0 Degrees Fahrenheit. * Supply air temper