What an AC tune up covers
- Outdoor coil cleaning so the system can reject heat on hot afternoons
- Evaporator coil and blower inspection for restriction and buildup
- Condensate pan, drain line, trap, and safety switch service
- Capacitor, contactor, and motor amp draw measured against specification
- Refrigerant performance verified through pressures and superheat or subcooling
- Temperature split and airflow measured and recorded
- Thermostat operation and control wiring checked
