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  1. #1
    Join Date
    Sep 2012
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    Default Water on Lens of Fluorescent Ceiling Light

    OK, this is just plain strange. We live in a 120 year old house in Colorado. Over the past couple of months we have been getting water building up on the inside of the lens of a fluorescent light ceiling fixture in our basement. We have looked everywhere for a leak and have found nothing. Also, we have found no moisture build up on anything around this light including on the light itself. We are thinking that this must be a condensation build up of some kind but we really don't understand how that could be. We have only been in the house for 2 years but this did not happen last winter when we had the same temp/moisture conditions in the basement that we have now. And it didn't happen at all during any other season. Any ideas? Thank you!

  2. #2
    Join Date
    Jul 2010
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    SoCal
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    Default Re: Water on Lens of Fluorescent Ceiling Light

    Is the condensation forming close to where the ballast is?

  3. #3
    Join Date
    Sep 2012
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    8

    Default Re: Water on Lens of Fluorescent Ceiling Light

    Yes, we think it is directly below the ballast.

  4. #4
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    Jul 2010
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    Default Re: Water on Lens of Fluorescent Ceiling Light

    You may have a faulty ballast. Now, if your fixture is the old fashion kind, with magnetic ballast, it could be hard to find a replacement. Replacing the whole fixture with a new electronic ballast one would make sense to me.

  5. #5
    Join Date
    Sep 2012
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    8

    Default Re: Water on Lens of Fluorescent Ceiling Light

    Thank you very much for your response! It probably is pretty old. Out of curiosity how would a faulty ballast cause condensation?

  6. #6
    Join Date
    Jan 2011
    Location
    Columbiana, Alabama
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    623

    Default Re: Water on Lens of Fluorescent Ceiling Light

    Moisture condenses in areas of high humidity on cold surfaces.

    Is the light mounted where cold air can get to it. Is the light in a humid place, like a washroom?
    Good Luck from Columbiana, Alabama
    Maurice Turgeon, Hidden Content

  7. #7
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    Jul 2010
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    Default Re: Water on Lens of Fluorescent Ceiling Light

    Quote Originally Posted by Catmomtoo View Post
    Thank you very much for your response! It probably is pretty old. Out of curiosity how would a faulty ballast cause condensation?
    If the worn out ballast produces excessive heat it can create condensation in a cold and/or humid basement.

  8. #8
    Join Date
    Sep 2012
    Posts
    8

    Default Re: Water on Lens of Fluorescent Ceiling Light

    Interesting...we are going to replace the light fixture (including ballast) and see if that helps. Thank you very much for your responses!

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