Question about Heating & Cooling
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Posted on Jan 02, 2017
SOURCE: Have possible mold in window
You should be able to clean the mold from the coils with a bleach and water solution without any concern for damage to the unit. However.. there are products designed for this job. If you insist on using bleach I strongly suggest that you remove the unit from the window and perform the cleaning in an area where the bleach solution can drain out of the unit without dripping on and ruining carpeting, etc. inside or killing plants outdoors.
Below is a reply I gave to someone asking about cleaning coils. You might want to do this too, and these cleaners are designed for the task - and will remove the bleach smell at the same time.
Both the evaporator and condenser coils (inside and outside) can be safely cleaned with products specifically made for the job. Clean evaporator and condenser coils mean more efficient cooling - which means lower operating costs. Cleaning the coils can remove stale or other less desirable odors that originate from your air conditioner. An example of such a cleaner is made by Thermwell which is available at Lowes and other hardware and home improvement stores. There are many different manufacturers of the cleaners - so if this particular brand isn't available at the store you shop, another will do. Different brands and types have different application methods - so you should read and follow the directions on the can. Many of the canned foaming / spray type cleaners are "rinse free" - meaning it is not required to rinse the foam off - as running the unit will allow the condensation that forms of the coils to do the rinsing for you. If you remove the unit an clean outdoors - or driveway, etc. then go ahead and gently rinse with a garden hose. Keep the water from the inside electrical and electronic controls. It should be noted that window / thru the wall types and other non-central air conditioning units should be tilted so that the condensation and chemicals drain outside - not into the house. If your AC hasn't been dripping water inside, it should be fine. Usually all that is needed is to remove the front grill and filter to access the coil. With the unit off (preferably unplugged) spray the foaming cleaner into the coil and let it sit to work on the dirt, grime, mold, nicotine, etc. that has collected on the coil. When the last step of the can's printed directions are complete - the job is done. You can find some helpful videos on Youtube to show how the cleaning is done on the larger, central air type units.
Please rate this reply if it was helpful to you - good luck!
Posted on Aug 12, 2010
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