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Old 07-21-2016, 12:40 PM   #1
2 Rivet Member
1984 31' Excella
Naples , Florida
Join Date: Jan 2016
Posts: 28
AC Leaking

OK, hit my first bump in the road fulltiming. My AC which is less than a year old is leaking down into the trailer somehow. I pulled the filter panel off to see if I could find where it is leaking from and can't see a thing other than a small leak (can't tell where it's coming from) and is very clean. I looked on the outside to see if draining and seems too be. I originally thought it was the rain but it is not, only happens when using AC.

I washed the outside before this started to happen and was very careful not to spray into or on the AC. Is it possible I plugged the drain line? Also can't seem to find where that "line" is.

Should I get on top again and take the cover off to see if something there?

I looked on You Tube to see if video to show where drain line is but none of them show that part, just how to clean them.

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Old 07-21-2016, 02:12 PM   #2
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1973 21' Globetrotter
Houston , Texas
Join Date: Sep 2009
Posts: 1,902
You may get some insights at the following:

Did you install the AC youself?

Does it sit in a plastic condensate catching pan, or does it have a couple of little cups mounted under it to catch the condensate?

When you say it is draining on the outside, do you mean you can see condensate running down the outside of the trailer, or is it coming out of the drain tube (which should be located near your wheel well on the street side)?

Are you seeing a steady drip, steady stream, or just a few drops occasionally?

I have a problem with my AC creating condensate that drips down into the trailer on really humid days where I am coming in and out of the door a lot. It isn't a matter of the drain not working properly, it is just that the air is condensing on surfaces that aren't designed to catch liquid, so it just drips.

good luck!

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Old 07-21-2016, 02:33 PM   #3
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2014 30' Flying Cloud
Tampa , Florida
Join Date: May 2016
Posts: 726
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My AC was leaking, but inside the trailer. I found out that the drain lines were not plugged. There were just not big enough to keep up with the condensate being created in the hot Florida weather. So I took the drastic action of drilling holes in the pans. Now the water leaks outside on the roof of the AS. Not inside. Lesser of two evils.
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Old 07-21-2016, 03:58 PM   #4
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2002 30' Classic S/O
Melbourne Beach , Florida
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Mine "leaked" for a while after I changed the orientation of the vents. Make sure your outlet vents are not rotated down so as to direct any air back into the lower part of the housing. When I turned the vents back up, the "leak" stopped. My theory was that the air blowing into the housing was pushing water over the side of the drip pan.


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Old 07-21-2016, 04:15 PM   #5
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2000 25' Safari
1999 34' Excella
Davidson County, NC , Highlands County, FL
Join Date: Aug 2006
Posts: 2,049
Your drain line should be on the road side (same as the driver's side) either in the wheel well or just in front of the wheel well near the outside edge of the belly pan. It is a 1/2" black plastic pipe.

If the pipe is clogged near the low end try using small stiff wire to break through any debris. Then use a wet dry vacuum to clean it out. If it will not come loose this way because it is clogged further back up inside the pipe, try blowing compressed air in the pipe before digging into the ac.

My trailers that I have kept in Florida often had dirt daubers and spiders plug up the AC drain pipe. After I had this happen a few times in one month I cut a piece of window screen and used a worm gear clamp to fasten it around the end of the AC drain pipe, sort of like a purse. It's been a few years ago and I have had no problem since I did this.
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Old 07-21-2016, 08:12 PM   #6
3 Rivet Member
1977 Argosy 28
Euless , Texas
Join Date: Jan 2014
Posts: 144
A/C also leaking

We pulled into a campground this evening and it was 93 outside and 98 inside so I hooked up and turned on the A/C. A storm was coming but the a/c was cooling well before and condensate was running out of the overflow tube under the trailer. I am on concrete and noticed that it was a lot of condensate.

The rain hit with high winds and driving rain and it cooled down outside about 10 degrees and the inside temp was about 79 when I noticed a lot of water dripping from the unit inside on the drivers side and onto the floor. The only thing different from prior rains is I am hooked up to the TV and the trailer slopes slightly to the rear. I have driven in driving rain with no leakage and in fact it rained last night with pretty strong winds with the A/C on with no leakage.

Should I be looking for a leaking seal at the roof when I get home or could this be condensate overflowing because of the very high humidity?
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Old 07-21-2016, 10:04 PM   #7
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1977 Argosy 28
Euless , Texas
Join Date: Jan 2014
Posts: 144
I didn't mean to hijack the thead but, same or similar problem. I unhooked and leveled the trailer and the water leak went away so it must be condensate spilling over. I was surprised at how much water I was getting and it was also running down the ceiling seam trim and dripping at the end about 8' away.

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