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How do I clean mold from the coils of a room air conditioner (and also from the plastic fan blades, foam, and metal casing)?

I have a Kenmore 5,300 BTU window AC unit (Model # 580.75051800) that was sitting in a room with a mold problem a couple of summers ago. It has been sitting in a box in the attic since then. I just took it down and have been cleaning it out to use it. There are several spots of black mold on the inside of the front cover, and I am concerned that there is probably more mold inside the coils where I can't see it.


I have carefully vacuumed the coils and the inside of the unit and have wiped the fan blades with a damp paper towel, but I am concerned about mold on the half of the unit that blows air into the room. What can I use to clean this that will be effective for mold? Would tea tree oil be ok for the for parts that are plastic or foam?


And especially, is there anything I can safely use to clean the evaporator coils that will kill mold?


I really don't want this mold to re-invade the room via the AC unit. Thanks for any advice you can give!

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Kenmore , Upright Vacuums
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3 Answers from these members:
Manage My Life
Thanks very much for the advice. Is it safe to spray the bleach solution on the coils? My main concern is how to clean mold out of the coils. Thanks!
by Manage My Life
June 29th, 2010
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Lyle W
To kill the mold on the air conditioner, I recommend that you use a solution of liquid chlorine bleach and warm water. You can use 1 cup of bleach to 1 gallon of water. Wipe down all of the surfaces in the air conditioner with this solution. Use protective gloves when working with the bleach. The image below shows how to disassemble the air conditioner (with it unplugged of course). After you wipe down an area, let the bleach solution sit for a few minutes and then thoroughly rinse the area. You can use a spray bottle to spray the solution into the fins and let it sit for a while. Rinse the fins out with water. Let the air conditioner parts completely dry and then reassemble the unit. These tips should help you remove the mold from the air conditioner. As long as you thoroughly rinse the air conditioner off and let it dry after cleaning it with the bleach solution, you should not have any damage to any plastic parts.

Once the air conditioner is running in the room, it should help to dehumidify the space and this will help prevent mold and mildew.
by Lyle W Earned 2,989 community points in Kenmore
June 29th, 2010
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Manage My Life
Hey Sarah646,
I see you have been cleaning the mold out of the air conditioner, my best advise to you be to visit our Sears Home Services website. I attached the link below. Hope this helps!!!
by Manage My Life
June 26th, 2010
Answered in 18 minutes
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