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Old 12-24-19, 12:04 PM   #6
Apprentice EcoRenovator
Join Date: Jul 2016
Location: Georgia
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Most A coils have a hole in the end of the frame to install the light inside the A. This is where I was told the light would be most effective. My system did not have an A coil so I put the bulb in a return air duct. Closer to the coil would have been better as that seems to be where the mildew forms.

The instructions that came with my lights said to leave them on all the time.
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