Problems Removing Mold Build Up on a Sweating Air Handler

Mold and mildew buildup can cause a wide range of problems in your sweating air handler. Mold will spread as the condensed water overflows the condensing pan. Learn more about where mold builds up, and how you can remove it to prevent damage to your air handler.

Light Mold and Mildew Buildup

Clear out a light layer of mold in the air handler with a special aerosol disinfectant spray. Spray this chemical disinfectant directly into the air handler's air intake.

Heavy Mold and Mildew on the Cooling Coil

You must remove heavy mold and mildew from your air handler correctly, to keep the mold spores from spreading through your home ductwork. To clean the cooling coil, spray the coil with an aerosol cleaner made for air handler coils, and brush the coil toward the coil fins. Vacuum off the cooling coil with a vacuum hose and round brush.

Heavy Mold in the Condensing Pan

The condensing pan, where atmospheric water collects, is mold's preferred growth spot. To remove mold and prevent future growth, place a chemical algae-retarding strip in the condensing pan. Keeping the condensing pan clear of mold will also reduce sweating on your air handler. Remove the condensing pan and empty it manually on very hot days.