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Registered
Join Date: Jul 2001
Location: Cave Creek, AZ USA
Posts: 44,756
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I'm gonna make the wild guess that the damage is done. That looked awful and speaks to years of neglect. There's a good spray to use for cleaning outdoor coils. I change my filter on the first of every month the unit is in use. I also send my tenant a 12 pack of filters so he does the same.
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2022 BMW 530i
2021 MB GLA250
2020 BMW R1250GS
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