To clean an AC unit, follow these basic steps:
- Turn off power to the AC unit at the thermostat and breaker to ensure safety.
- Remove the outer cover or front panel of the unit to access internal parts.
- Remove and clean or replace the air filter.
- Inspect and clean the evaporator and condenser coils using a specialized AC coil cleaner or mild soapy water. Spray and let the cleaner sit, then rinse gently with a garden hose, avoiding high-pressure water to prevent damage.
- Clear away debris from the interior and bottom of the unit with a vacuum or by hand.
- Straighten any bent fins on the coils carefully using a fin comb if available.
- Reassemble the unit, restore power, and test the AC for proper operation.
Key points: Use a soft brush, coil cleaner, and gentle garden hose spray; never use a pressure washer; ensure the coil cleaner is rinsed off completely; and make sure the filter is dry before reinstalling it. Safety gear like gloves and goggles is recommended.
