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Home Care Library

Central Air Conditioning

The Home Wizard app calculates your ideal home care program to avoid problems with your Central Air Conditioning, but sometimes trouble can still occur. Here are answers to questions about central air conditioning coating on ac compressor.


A/C compressor fins have developed a white coating. Appears to be some type of oxidation. Is there any way to clean it?


Dear Joe:

The white coating could be oxidation, or it could be residue if an acid cleanser was previously used.

Here is a webpage that describes how to clean air conditioner compressor fins:

Also, if you see a number of bent fins (or if you accidently bend some of them when you are cleaning the fins), then you might want to consider using a "fin comb" to straighten them back out. And here is a short video on how to use a fin comb:

Hope this is helpful.

Central Air Conditioning