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  1. #1
    Join Date
    Jun 2006
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    if you shin a light on the back of the coils in the air handler is the light suppose to go thru?

  2. #2
    Join Date
    Jun 2004
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    i would think it depends on the fin spacing, depth of the coil, and cleanliness. some coils yes, you would see the light, others, no you won't see the light.

  3. #3
    Join Date
    Feb 2006
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    I would be worried if it doesn't. Means my coil is dirty.

    Hey, is that a way to check your coil's cleanliness?

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