Is this furnace end cover necessary? (thelemmy.club)

submitted 3 weeks ago by loopy@lemmy.today to c/diy@beehaw.org

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I am adding a UV light to my furnace coils. I decided to cut an access panel for easier cleaning and access to the UV light. I did not realize there were these triangular end covers for the A-frame of the furnace evaporator coils.

I don’t see them anywhere online when looking up diagrams of furnace coils. When I search online, it is also not clear if these covers are necessary. Are these covers beneficial? Or can I take one side off to fit the UV light underneath the A-frame?

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[-] loopy@lemmy.today 2 points 2 weeks ago

Oh gotcha. Yeah I don’t really have an HVAC person to ask, but I found a few reputable sources on YT and they recommended on the underside of the coils, because that’s where the moisture (and then bacteria) accumulate.

this post was submitted on 29 Apr 2026

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