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Old 07-21-2019, 03:14 PM   #1
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Join Date: Feb 2012
Posts: 246
Interior overhead round A/C vents

i have a 31 foot national seaview model 8310 with 2 rooftop a/c units.

i notice that when i turn on my front a/c unit and put my hand up in front
of my a/c vents that some of my vents are blowing out harder and others are
blowing less and a few are barely blowing? was wondering if this is normal
or do u think that maybe some vent ducts maybe blocked or plugged up
somehow? just wondering if anyone else has experienced this problem
and what did u do to rectify the situation? thanks for any comments ort
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Old 07-21-2019, 03:20 PM   #2
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Richard S.'s Avatar
National RV Owners Club
Ford Super Duty Owner
Join Date: May 2007
Location: El Cajon CA
Posts: 2,083
They all blow different volumes of air
2007 Sea Breeze LX 8321 Ford Chassis
2004 Ford Ranger Edge
El Cajon CA.
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Old 07-21-2019, 05:07 PM   #3
Join Date: Sep 2006
Location: Texas
Posts: 76
Not a problem. Some are just closer to the source. If you want to change the distribution shut down the vents a little that are closer to the source. The source being the A/C unit itself.
The air path from front to back is a cutout in the styrofoam ceiling insulation.
2000 National Sea Breeze
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Old 02-20-2020, 06:41 PM   #4
National RV Owners Club
Vintage RV Owners Club
Join Date: Jun 2011
Location: San Diego, CA
Posts: 87
Blog Entries: 1
Had this problem when I first got my 8310. The PO did a good job cleaning up any signs of rodents however my vents were plugged with mice nesting. I spent a lot of time cleaning the rectangular vents by pulling a rag thru with a fish tape.
Current -1999 31' National Seaview V-10 Ford
Past - many
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Old 02-20-2020, 09:55 PM   #5
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Workhorse Chassis Owner
Join Date: Jan 2002
Posts: 1,846
We have 2 roof units also. #1 blows hard in front and almost none in the bedroom. #2 blows the opposite. Run them together....and the circuit breaker activates.
2003 Dolphin LX 6355 w/ W22 chassis; 8.1L gas & Allison 1000
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