How To Clean The Closet Dehumidifier
A closet dehumidifier is really just an air conditioner working the other way round – it is subject to the same problems and cured by the same repairs. So if your dehumidifier does not pull out the humidity from the air, the problem could be a simple one that often stops a cooling air conditioner: The filter and the coils are clogged by dirt. What is the solution? Give it a thorough cleaning.
Unplug the closet dehumidifier, then remove and empty the water retention tank. Remove the front and rear grilles. You will have to use a spatula and pry between the top of the grill and the body of the cabinet to release the catches or use a screwdriver to unscrew the screws. Remove the mesh filter, if the equipment has one. It can be attached to the front grid or set on a track in front of the evaporator coils.
Clean the filter with a mixture of warm water and soap and bleach. Chlorine will kill any appearance of mold, so it will not be blown around the room when the machine is running. Clean the evaporator coils, using a vacuum cleaner with a brush attachment. Remove stubborn dirt; wash with a brush and a household spray cleaner, such as Formula 409. Scrub lightly so as not to bend the fins covering the coils. Reassemble the closet dehumidifier, reinstall the water retention tank and plug in the unit.