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Old 06-07-2010, 11:40 AM   #1
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Is water in the HVAC overflow pan normal?


Last week, we replaced the coil in our second floor Goodman HVAC equipment because of a leak. This unit is mounted in our attic in unconditioned space. Currently, the attic temperature is 90 degrees with 34% humidity.

I just went up to check on the equipment and I noticed the overflow pan had about 1/2 to 3/4 of an inch of water, but not enough to trigger the shut-off switch. I took a sponge and removed the water, which totaled about 1/2 gallon.

Is that much water in the pan normal? I'm not sure how these things work.

Thanks,
Kelly

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Old 06-07-2010, 03:11 PM   #2
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Is water in the HVAC overflow pan normal?


No. Means your main drain is not draining the water fast enough. Could be a restricted drain, or other problem.

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Old 06-07-2010, 05:11 PM   #3
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Is water in the HVAC overflow pan normal?


Thought so. HVAC tech is coming out this Wednesday.
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Old 06-07-2010, 05:29 PM   #4
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Is water in the HVAC overflow pan normal?


Is the drain pan part of the coil assembly and new?

The outlet tube could be positioned so that the last half an inch or so of water doesn't drain out by itself. Poor design.

I had that problem on an AC coil assembly I installed several years ago and the best I could do is tilt the tray/coil slightly so the corner with the outlet was a bit lower.
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