How to Clean Evaporator Coils

How to Clean Evaporator Coils

These are the steps that your Carrier expert may complete:

• Turn the air conditioner or heat pump and furnace off and wait until they have cooled down.
• Remove the access panel to expose the coil.
• Lightly brush the coils, or use a shop-vac to remove any unwanted dirt and debris build-up.
• Clean the fins by using a low-pressure sprayer using a mixture of water and mild household detergent on all exposed surfaces of the coil. Also be sure they are not using a detergent that is highly acidic. Acidic cleaners damage the copper and alloy metals used in the coil, and potentially cause corrosion which will shorten the life of the coil.
• If available use a wet-vac to further clean the coil.
• Check the drain pan for signs of bacteria or mold. If there is minor growth, clean the base pan only with a 50/50 mix of bleach and water, and make sure to rinse thoroughly.
• Check that the condensate drain tube is working properly by pouring water in the tube.
• Check the coil and repeat the process on any areas that are not fully cleaned from the first application.
• Replace the panel when finished cleaning the coils.
• Turn the HVAC system power back on.