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Old 08-07-2016, 10:48 PM   #1
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Condensation inside

When running our AC over night in the humid summer we always seem to wake up with condensation on things inside the camper. We have both roof vents open. The only exhaust fan is in the bathroom and can't leave that door open as it blocks the kids bunks.

Anyone else have condensation and how do you eliminate or handle?


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Old 08-08-2016, 12:00 AM   #2
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We had so much when we were in florida i thought the sink was leaking
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Old 08-08-2016, 12:08 AM   #3
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We shut all roof vents to the outside when camping in humid weather.
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Old 08-14-2016, 09:32 AM   #4
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I left the roof vent open by accident and had a condensation issue. Closed it and the issue went away.
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Old 08-14-2016, 09:47 AM   #5
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Interesting. I always thought you should have vents open to decrease the condensation. But seems like that's not the case....


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Old 08-14-2016, 10:18 AM   #6
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Hi,

The open vents allow humid outside air to enter the unit, and the cooler interior, somewhat less humid, environment promotes condensation.

FWIW.

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Old 08-15-2016, 01:29 PM   #7
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The A/C is basically a dehumidifier, so keeping the RV closed as much as possible will allow the A/C to lower the humidity in the unit. Leaving the vents open results in moist outside air migrating into the less humid RV, as eluded to above in a couple of posts.
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Old 08-15-2016, 01:38 PM   #8
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If you have condensation inside, then you have a massive air leak that's allowing warm humid air to get in and the moisture is condensing on the cool surfaces.

It appears your massive air leak is your open vents.

Close the vents and I bet your condensation problem goes away.
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Old 08-15-2016, 01:49 PM   #9
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Winter time is the opposite, warm moist air trapped inside will condense on any surface in contact with cold outside surfaces. This is when you need to vent.
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Old 08-15-2016, 01:52 PM   #10
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Cold outside vents open to prevent condensation
Hot out vents closed to prevent condensation.
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