Before operating your air conditioner for the summer months begin by first turning off the breaker and the disconnect switch at the unit. Allow 30 minutes before working on the unit due to an electrical charge that is stored in the capacitor. Begin by removing any leaves, pine straw or any other debris that may have accumulated over the winter months. If the coils are dirty they need to be cleaned with a soft brush and the assistance of a vacuum cleaner. If the coils appear to be soiled after the initial dry cleaning you will need to use a coil cleaner (follow closely the manufacturer’s directions for use). When rinsing the coil cleaner spray water to the outside of the unit and avoid water contact with wires, electrical connections and the fan motor. Do not spray water into the unit. After the unit has been properly rinsed you must allow ample time for it to dry before operating. Check fastening hardware and tighten any screws or bolts that are loose. Make certain that the unit can drain properly via drain and/or weep holes located at the base of unit, debris collects here over time and blocks the passages. Inspect the area around the unit to be sure that nothing obstructs the cooling such as plants, shrubs, etc. Replace the air filter and after the unit is completely dry turn on the breaker and the disconnect switch. If you are inexperienced or unsure about servicing an air conditioner please contact a local HVAC company and schedule a service appointment.