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06-12-2017, 02:55 PM
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#1
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Established Member
Join Date: Apr 2017
Location: Dekalb
Posts: 11
M.O.C. #19744
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A/C Ducts
We have a 2017 3731FL and ran the A/C's for the first time last week. After awhile we noticed that we weren't getting much airflow. I read some past forums that said to turn the fan to high. I did that then heard a bunch of crap blow through the duct work. Any ideas how to remove it and where is it going?? Thanks for any help.
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06-12-2017, 04:34 PM
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#2
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Montana Fan
Join Date: Sep 2016
Location: West Melbourne
Posts: 310
M.O.C. #18980
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That crap is probably saw dust left over from construction. I had to open my AC housing to fix a water leak and vacuumed a bunch of sawdust. I also vacuumed the return air ducts....
__________________
Butch and Kathy
2016 3160RL Legacy, Sailun S637, Centramatic Balancers, 2-T105s, Amish Refrigeration, ARPrv, SoftStartRV, FlexArmor roof
2016 F350 6.7L SRW
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06-12-2017, 04:50 PM
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#3
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Established Member
Join Date: Dec 2015
Location: Fort Walton Beach
Posts: 23
M.O.C. #18101
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My 2016 had partially collapsed return air ducts. I put a 10" X 1.25" piece of PVC in each of the return ducts (I pushed the in about 1/2 way between the vent and the A/C unit) and the airflow noticeably increased. If you do this, be sure to sand the end edges smooth as to not damage the vent when pushing them in.
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06-14-2017, 03:40 PM
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#4
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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Remove ac vent covers, stick shop vac hose in and suck away. Being a new unit, the sawdust will go round and round the race track ducting.
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06-14-2017, 04:02 PM
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#5
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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And plan on doing it several times as you shake things up during travel.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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06-14-2017, 05:36 PM
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#6
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Established Member
Join Date: Apr 2017
Location: Dekalb
Posts: 11
M.O.C. #19744
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Thanks for all the input, I'll do some vacuuming!!
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06-16-2017, 09:03 AM
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#7
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Established Member
Join Date: Sep 2016
Location: Gresham
Posts: 11
M.O.C. #19065
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Sawdust
Opened my rear AC to fix a return air duct water leak and found a significant amount of sawdust in the pan. Seems like it should have been vacuumed during factory installation. Will probably climb up there again to inspect the front AC. Also installed some short lengths of PVC in the return air ducts while it was open. Surprised to see how much the return air ducts had collapsed - bad design.
Larry and Loralei
2017 3160RL
2012 Chevy Silverado 3500 Duramax
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06-16-2017, 11:14 AM
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#8
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Established Member
Join Date: Apr 2017
Location: Dekalb
Posts: 11
M.O.C. #19744
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Interesting, I'll have to take a look. Thanks
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06-26-2017, 03:29 PM
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#9
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Montana Master
Join Date: Apr 2016
Location: Auburn
Posts: 879
M.O.C. #18474
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Check your vents. Do they have a long neck on them and stick up past the ceiling into the ducts? If so, remove them until you can get home and to a dealer or order new ones online. The ones pictured stop a lot of the air flow. The newer style are the shorter ones and let air get through the vents.
__________________
2020 Montana 3790RD Legacy EditionOnan, TST TPMS, TrailAir pin, Discs,
2013 F350 DRW 4x4 CC LBViair 10007, Ride-Rites, Westin HDx, 12k Smittybilt
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06-26-2017, 04:06 PM
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#10
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Established Member
Join Date: Apr 2017
Location: Dekalb
Posts: 11
M.O.C. #19744
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I have the shorter ones, thanks.
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06-26-2017, 06:48 PM
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#11
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New Member
Join Date: Jun 2017
Location: Mayfield
Posts: 5
M.O.C. #20050
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a/c has no air flow
Quote:
Originally Posted by BC.Fire94
We have a 2017 3731FL and ran the A/C's for the first time last week. After awhile we noticed that we weren't getting much airflow. I read some past forums that said to turn the fan to high. I did that then heard a bunch of crap blow through the duct work. Any ideas how to remove it and where is it going?? Thanks for any help.
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we have a new 2017 and that happened to us and found the a/c units were not located properly on the roof of the trailer they had to be moved 4to5 inches, the air was going back thru the return on the roof. after putting unites in proper place not has plenty of air flow it did fix the problem.
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06-26-2017, 06:49 PM
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#12
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New Member
Join Date: Jun 2017
Location: Mayfield
Posts: 5
M.O.C. #20050
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for any help.we have a new 2017 and that happened to us and found the a/c units were not located properly on the roof of the trailer they had to be moved 4to5 inches, the air was going back thru the return on the roof. after putting unites in proper place not has plenty of air flow it did fix the problem.
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07-07-2017, 04:06 PM
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#13
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Established Member
Join Date: May 2017
Location: ormond beach
Posts: 49
M.O.C. #19826
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Quote:
Originally Posted by Golfmedik
Check your vents. Do they have a long neck on them and stick up past the ceiling into the ducts? If so, remove them until you can get home and to a dealer or order new ones online. The ones pictured stop a lot of the air flow. The newer style are the shorter ones and let air get through the vents.
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If you have the long style, you should be able to cut them down with a pair of tin snips. It would save you the cost of buying new ones
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06-18-2018, 10:06 AM
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#14
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New Member
Join Date: Jun 2018
Location: McCalla
Posts: 6
M.O.C. #21994
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Quote:
Originally Posted by Decook2010@hotmail.com
for any help.we have a new 2017 and that happened to us and found the a/c units were not located properly on the roof of the trailer they had to be moved 4to5 inches, the air was going back thru the return on the roof. after putting unites in proper place not has plenty of air flow it did fix the problem.
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Did you move them your self or take it to a shop. How did you discover this.
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