How to Spray Clean an Evaporator Coil

Clean evaporator coils using spray cleaners.

Air conditioner evaporator coils need to be cleaned in order to keep them in good working order. A dirty and rusty evaporator coil can damage the air conditioning unit and necessitate coil repair or replacement. It is important to clean the evaporator coil often or dirt will build up and dirt becomes harder to remove as time goes on. Evaporator coils that are kept in good condition should last around 10 years.

Things You'll Need

• Foaming no-rinse coil cleaner
• Water
• Bleach

Instructions

1. Spray foaming coil cleaner straight onto the evaporator coil. Coat the entire surface evenly.

2. Watch the no-rinse foam break down the dirt on the coil. There is no need to scrub the coil at all.

3. Observe the cleaner as it liquefies and runs down the coil. This rinses the coil off, thereby removing dirt.

4. Check that the PVC line is algae free and has no clogs. Pour a solution of equal parts water and bleach into the drain pan. This will keep the line clear.

Tips & Warnings

• Clean the coil on a hot day because the air conditioning will rinse the coils with its condensation.

References

• Handyman How To: How to Clean Air Conditioner Evaporator Coils