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Old 06-27-2020, 08:26 PM   #16
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Re: Does UV damage coils? or infrastructure?


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Originally Posted by wraiththe View Post
You have a point there I had not considered. If the resistance from the filter was high, it could have been somehow sucking air from the walls surrounding it. Maybe I should check them.
the more "effective" your grill filters are, the higher the leakage you'll have downstream from them, probably making the issue worse. I would suggest at a minimum making them merv 8.
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Old 06-27-2020, 11:32 PM   #17
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Re: Does UV damage coils? or infrastructure?


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Probably have some return leakage then.

What size a/c? 14x25x1 pleated - better not be more than 2 tons.

You can put el-cheapo fiberglass in the return grill as a pre-filter.
1.5 ton condenser 2 ton handler.
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Old 06-28-2020, 10:20 AM   #18
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Re: Does UV damage coils? or infrastructure?


filter size is okay, do what you can to reduce return duct leakage.
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I am not in the business of any trade I give advice on. I have non-professional hvac experience + good knowledge of theory. Attempt repairs at your own risk. Never jump out safeties - especially pressure switches - on a furnace for testing with fuel supply on; use a meter. Do not troubleshoot with live line voltage present unless there's no alternative.
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Old 06-28-2020, 01:04 PM   #19
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Re: Does UV damage coils? or infrastructure?


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filter size is okay, do what you can to reduce return duct leakage.
Ugly, but what I had. Also painted it with good paint.
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