Wondering what this might be?


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Old 02-07-23, 03:20 PM
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Wondering what this might be?

Opened my AC unit's closet door and found this mineral like substance on the drain pan. It has a texture and not easy to remove. I was thinking maybe just mineral deposits from the water where the AC had a few small leaks and it left that behind however in the several years Ive been here, Ive never seen this before. Being not super knowledgeable I figured Id ask this forum and see if you had any ideas and what I should do. I was thinking of hooking my drain line to my wet dry vac and using bleach and distilled water on it this weekend. Thanks!

 
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Old 02-07-23, 03:59 PM
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You are correct..... just left over minerals. Mostly calcium (salt) stains.
Nothing harmful and should be easy to clean off.
 
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Old 02-08-23, 04:12 AM
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Ok thank you. Is it correct in my thinking to do the flushing every 3 or 4 months and do use distilled water and bleach to do so? I take off the panel and pour into the pan and use the shop vac to clean the line.

Also any thoughts on the spray foam for the coils? I do that like once a year. Thanks!
 
 

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