Thread Tools Search this Thread Display Modes
Old 05-01-2017, 02:00 PM   #1
1 Rivet Member
2017 27' Flying Cloud
Mount Dora , Florida
Join Date: Aug 2016
Posts: 5
Question 2017 Flying Cloud: A/C Condensation Running Down Side of Trailer

Hello all:

I have a 2017 Flying Cloud 27FB (6 mos old), with 2 Dometic a/c units.

On our most recent trip (temps in the high 80's during the day), I noticed that condensation from the rear air conditioner was running down the side of the trailer right behind the entrance door. This was NOT happening for the front a/c even though we were using it as well.

I checked the a/c drain tube on the streetside of the trailer by the wheels and it appeared to be working and draining water as it should.

Is this normal? Suggestions?

Thank you for your help.
jackmgm46 is offline   Reply With Quote
Old 05-01-2017, 06:42 PM   #2
Rivet Master
FCStreamer's Avatar
2014 30' Flying Cloud
Tampa , Florida
Join Date: May 2016
Posts: 1,364
Blog Entries: 1
I had a similar problem in my 2014. After much consideration and several AC tech visits, I determined that the condensation was overwhelming the drainage lines. I live in middle Florida. And some of the condensation was overflowing into the trailer. So I had some extra holes drilled into the drainage pans of both ACs, draining onto the roof instead.

No, not elegant. But functional. No water inside the trailer. I have water coming out of both lines AND the side of my trailer. The price to pay for living in paradise...
2014 Airstream Flying Cloud 30 Recliner - WBCCI #4850 - AIR #110821
2018 Nissan Armada SL Tow Vehicle, Equal-i-zer Hitch
Visit Our Flying Cloud blog for my latest adventure!
FCStreamer is offline   Reply With Quote
Old 05-03-2017, 05:30 AM   #3
3 Rivet Member
2020 30' Classic
Blue Ridge , Georgia
Join Date: Mar 2016
Posts: 137
2015 FC ducted AC. Have the same issue with water running down the sides of the trailer. Cleaning the ceiling air intake filters yesterday and noticed the clear drain tube had a bend in it limiting the water flow. A simple 90 degrees fitting would correct this. Has anyone had the same problem?
Gleverett is offline   Reply With Quote
Old 05-03-2017, 05:49 AM   #4
Rivet Master
centennialman's Avatar

2016 20' Flying Cloud
Centennial , Colorado
Join Date: May 2006
Posts: 1,564
I had the same issue last year. When I had the Airstream for some warranty work they found a kink (bend) in the tubing. They fixed it and no more problems.
Steve "Centennial Man"
centennialman is offline   Reply With Quote
Old 05-03-2017, 05:19 PM   #5
Rivet Master
GammaDog's Avatar
2014 25' FB Eddie Bauer
Vero Beach , Florida
Join Date: Sep 2014
Posts: 568
Images: 26
Ditto suggestions above. Also, try changing the pitch of your trailer. Even within comfortable limits for humans, a degree or two on the nose-to-tail pitch (adjustable with the tongue jack) or side-to-side (I use Anderson camping leveler so, but blocks do fine too) can make the difference between the condensate draining through the tube as intended, going over the roof or even coming into the trailer from around the filters.

I live near you in Florida, and find that the heat and humidity cause me to AC the trailer all summer (roughly May to November). Green algae in the drain lines is a problem. At least once a year I use a dilute bleach and water solution plus compressed air to clean those clear plastic drain lines. They can be inspected from inside the trailer by removing the grills from the AC units. You can even clean them from inside if you want to disconnect a joint in the line.
GammaDog is offline   Reply With Quote
Old 05-03-2017, 05:36 PM   #6
Rivet Master
KJRitchie's Avatar
2008 25' Classic
Full Time , Texas
Join Date: Nov 2012
Posts: 4,309
I had a new Dometic 15k unit installed on my 2008 Classic 25fb with the drip cups. I noticed condensate coming off the roof. With the AC air distribution box pull I noticed the T in the drain tubes was located closer to the curb side. We pushed water up the drain tube in the wheel well and noticed the draining of the water. The longer tube from the street side didn't drain. I suggested the T fitting to be relocated more in the center and the drain tubes to have more of an down hill angle to the T and the line downstream from the T fitting. Also the trailer wasn't perfectly level laterally. So condensate backed up on the street side drain cup and there wasn't enough pressure to push it through the T fitting so it overflowed. Since the change are made and the trailer more level it drains via the wheel well without over flowing. I opted for the drain cups vs the drain pan. Better to overflow outside the trailer vs inside the trailer if a restriction occurs.

2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
KJRitchie is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Powdery substance cuts down condensation? Gmutt Electrical - Systems, Generators, Batteries & Solar 17 08-21-2016 05:18 PM
Goin' down, down, down... Aironius Axles 12 08-23-2014 08:09 AM
Awnings: are they really up/down/up/down ... Belbein On The Road... 6 06-08-2014 01:55 PM
AC condensation drain leaking inside window frame, running down screen Aggie90 General Repair Forum 0 04-11-2014 07:25 PM
Street side Zip-Dee collects condensation Scotman Awnings 0 02-03-2013 06:16 AM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

All times are GMT -6. The time now is 02:09 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.