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Is this furnace end cover necessary? (lemmy.today)
submitted 6 months ago by 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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[–] [S] 1 point 6 months ago (2 children)

Huh, I hadn’t thought about turning the light on for short periods. And if ozone is mostly generated with moving air, then turning the light on with the furnace off seems to be safest. Thanks for the suggestion.

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  • [–] 2 points 6 months ago (1 child)

    If your intent is to sterilize the coils so that they can't grow anything funky, then yes, probably that would be for the best.

    Also, you could certainly test it by setting it to turn on when the furnace is on so you can see how stinky the ozone is. If it smells kind of strong, then that's probably too much, right?

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  • [–] [S] 2 points 5 months ago

    I had it on for a few days straight and it didnt smell at all. But I think to be safe, I’m going to keep it unplugged and then run it for couple of hours each month (with the furnace turned off).

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