A/C ducting has condensation on it

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Old 06-12-15, 10:09 PM
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A/C ducting has condensation on it

Hello,

Not sure if this is the right section of the forum, but hopefully so.

So I'm in the process of repairing several sections of the underbelly of my trailer. But it's a bit frayed, so I'm using some Hurricane tape on the edges of each hole to help keep it from tearing further at a later date.

But while I was taping the edges off like that, I noticed that some of the underbelly was damp. After further inspection, it seems like the A/C duct tube has some condensation on it, which was/is in turn causing the surrounding area of the underbelly material to be wet.

What all could cause this to happen, as obviously I don't want to put more insulation in there and it get all wet/useless. I've seen somewhere that it could maybe be the a/c drainage tube not draining properly, but I'm wondering what all other possibilities there is also. It is a metal ducting system (aluminum I'm pretty sure).

Thank you ahead of time to anyone who can give me some ideas!
 
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Old 06-12-15, 11:14 PM
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Welcome to the forums.

The first thing we do when we get a question like this is to look at the posters location which you don't have filled out. It tells us what kind of weather/climate is involved.

It's important that all the ductwork be insulated or it will sweat and drip. You'll need to determine if that ductwork is internally insulated because if it isn't.... the outside needs to be insulated.
 
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Old 06-13-15, 12:18 AM
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Ugh lol....

Ugh lol, that was hell.. Wouldn't let me post from FB again, and the first account never received the activation email Lol..

But I'm sorry, it didn't give me the option to input location, I assume since I used FB to login the first time. But I'm in Strawberry Plains, TN.

But, since there IS a huge hole underneath it, and the insulation was ripped out, what are the chances of that being the cause of the condensation? I'm fairly certain that it's NOT internally insulated already though.

And last but not least, if it is due to the lack of insulation, then can I just wipe it dry with a cloth (with a/c off of course) and then slap some insulation under it and close up the hole? Assuming of course, that some insulation on the bottom is enough by itself. But I'm pretty sure that's how it was before the holes were made anyway though.

Thank you again btw!
 
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Old 06-13-15, 01:03 AM
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Hi, is that the main duct from the AC? Maybe a pic or two would help ,but at any rate it must be wrapped and sealed well to prevent condensation,think of a cold glass of beer on a warm humid day,condensation forms on the outside of the glass, condensate drain could be blocked allowing water to run inside the duct also.
Geo
 
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Old 06-13-15, 08:12 AM
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Have you verified that the AC drain is clear?

Is the cooling coil in the house or do you have a package unit with ductwork connecting the outdoor unit to the house?
 
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Old 06-13-15, 12:39 PM
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Yes, the cooling coil is located inside the trailer, and it doesn't seem that the AC drain is clogged, as the canal where the drain is located isn't full. It doesn't seem to get higher then the drain hole, so I assume that means it's clear enough.

Maybe I can get under there and take a couple of pics later.


Edit: Yes, thank you PJ. I had just woken up when I wrote that, it's corrected now.
 

Last edited by RoachyJosh; 06-13-15 at 02:50 PM. Reason: Used wrong wording due to being half asleep still.
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Old 06-13-15, 12:50 PM
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and it doesn't seem that the AC drain is clear,
You mean it is clear. .................
 
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