Condensation Issue

[spurticus]

I have a Heritage Glen 272BH. Near the AC unit and at the top of the fridge area, condensation forms on the ceiling.

What’s causes this? Why this one particular area. The pics below show where I’m talking about.

[5picker]

It is caused by the expansion and contraction of the thin wood (LUAN) under the vinyl covering that is applied to it. As the wood expands and shrinks, it wrinkles the covering. Usually happens near a place where the wall/ceiling sheet is trapped by another piece of wood or trim. In your case, the cabinet.

I have seen this in several units we've owned and even in a manufactured home we lived in. As your rig ages, you'll likely see a few other spots develop. I've even seen it in brand new units at some of the R/V shows.

Although moisture can cause a similar issue, this has nothing to do with condensation.

[Flybob]

Another thing to check. Remove the inside cover of the AC unit ( may be able to just remove return grid). Look for areas between the cool plenum and the ceiling where cod air can enter the ceiling above the effected area. If you have AC dusts, use a flashlight or endoscope to check to see if they are properly connected. If the area is not sealed well, cool air can be forced into the area and cause moisture to condense on the inside surface of the ceiling.

[SeaDog]

It may be also that the warm air from the frig is condensing in that area because of poor insulation. On my Flagstaff the top of the frig is not sealed only fiberglass insulation stuffed in there to prevent the warm air from the coils migrating into the rig.

[spurticus]

Thanks all for the responses.

[chaps2018]

Originally Posted by SeaDog

It may be also that the warm air from the frig is condensing in that area because of poor insulation. On my Flagstaff the top of the frig is not sealed only fiberglass insulation stuffed in there to prevent the warm air from the coils migrating into the rig.

Exactly what I was thinking. Behind my fridge there is an open cavity where the hot air of the coils can collect.

In used reflextex and foil tape to make a pathway for the hot air to travel right out the top fridge vent vs stagnating in the top empty cavity heating up the Attic.

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