how to clean ac coils

To clean AC coils properly, follow these steps:

1. Turn off the power to the AC unit at the thermostat and circuit breaker to ensure safety.
2. Remove the outer cover or grille to access the condenser coils using a screwdriver or nut driver.
3. Inspect the coils for dirt, debris, and any bent fins; straighten bent fins with a fin comb if needed.
4. Apply an AC coil cleaner (foaming or non-foaming) generously onto the coils. Foaming cleaners help penetrate and dissolve grime without much scrubbing, while non-foaming cleaners may require gentle brushing with a soft brush.
5. Let the cleaner sit for the recommended time to break down debris.
6. Rinse the coils thoroughly with a garden hose, spraying from the inside out to flush away dirt and cleaner residue, taking care not to bend the delicate fins.
7. Inspect the coils again and repeat cleaning if necessary.
8. Reassemble the outer cover or grille and secure with screws.
9. Restore power and test the unit to confirm proper operation and improved cooling.

Wear safety goggles and gloves during the process, and use gentle water pressure when rinsing to avoid damaging the coils. Cleaning the coils annually or as needed keeps the AC unit efficient and prolongs its lifespan. Indoor evaporator coils cleaning is better done by professionals due to electrical risks and warranty concerns.