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08-11-2015, 09:44 AM
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#1
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Senior Member
Join Date: May 2013
Location: North Central Vermont
Posts: 1,485
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Air Conditioner with roof vents open/closed
Going through a heat wave in Montana and single 13.5K is having trouble keeping up. I am not sure whether it is best to have the roof vents open or close. Part of me thinks it is still good to let the rising heat escape and part thinks everything closed is best while running the AC. For now, LR vent is closed and bathroom vent is open in the fiver.
Thoughts?
__________________
2015 F350 XLT PSD CCSB SRW, Andersen Ultimate hitch
'12 Cougar High Country 299RKS, Mor/Ryde Pinbox
1/77 Armor Bn, 5th Mech, I Corps
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08-11-2015, 12:57 PM
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#2
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by SkiSmuggs
Going through a heat wave in Montana and single 13.5K is having trouble keeping up. I am not sure whether it is best to have the roof vents open or close. Part of me thinks it is still good to let the rising heat escape and part thinks everything closed is best while running the AC. For now, LR vent is closed and bathroom vent is open in the fiver.
Thoughts?
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SkiSmuggs
Right or wrong I seldom open a roof vent when an A/C is running, (especially in HOT weather).
Mel
'96 Safari, 141k miles
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08-11-2015, 01:10 PM
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#3
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 52,857
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Keep the vents closed! JMHO  
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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08-11-2015, 01:15 PM
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#4
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Senior Member
Join Date: Jul 2014
Location: Sedona, AZ
Posts: 713
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Vents closed. The AC recirculates the air on it's own via the intake. Opening the roof vents can bring it the hot outside air at the same time the cooler inside air is escaping.
__________________
Tim, Tara and Canyon - 'TnT' (& C now...)
2015 Thor Outlaw 37LS w/FJ Cruiser Toad
Columbia 400, 1967 Corvette, KTM 350 EXC-f, TTR 125 LE, XR50 for toys
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08-11-2015, 01:57 PM
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#5
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Senior Member
Join Date: Dec 2014
Location: High up in Arizona
Posts: 2,050
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Quote:
Originally Posted by MonkeyClaw
Vents closed. The AC recirculates the air on it's own via the intake. Opening the roof vents can bring it the hot outside air at the same time the cooler inside air is escaping.
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Exactly what happens. As you recirculate the inside air it will continually get cooler but not if you open vents and let new hot air inside. Keep them closed.
__________________
2019 Allegro Bus 37AP towing a Jeep JK Rubicon Wrangler
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08-11-2015, 02:03 PM
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#6
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Senior Member
Join Date: Jan 2011
Location: Wandering below the Gnat Line
Posts: 1,801
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We keep the bathroom vent about one inch open here in Texas; that seems to be the best tradeoff between heat and ......
I think you really should have some air exchange or the interior, especially for liveaboard, gets to smelling like a musty old tavern even when no one's smoking or drinking.
__________________
-jbh-
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08-11-2015, 04:15 PM
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#7
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Senior Member
Join Date: Dec 2014
Location: High up in Arizona
Posts: 2,050
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Quote:
Originally Posted by johnhicks
We keep the bathroom vent about one inch open here in Texas; that seems to be the best tradeoff between heat and ......
I think you really should have some air exchange or the interior, especially for liveaboard, gets to smelling like a musty old tavern even when no one's smoking or drinking.
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True but I prefer to air it out at evening when cooler and shut down a/c.
__________________
2019 Allegro Bus 37AP towing a Jeep JK Rubicon Wrangler
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08-11-2015, 05:20 PM
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#8
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Senior Member
Join Date: May 2013
Location: North Central Vermont
Posts: 1,485
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Thanks, folks, I just closed the bath vent as it is 100 out and 80 inside.
__________________
2015 F350 XLT PSD CCSB SRW, Andersen Ultimate hitch
'12 Cougar High Country 299RKS, Mor/Ryde Pinbox
1/77 Armor Bn, 5th Mech, I Corps
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08-12-2015, 06:16 AM
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#9
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Senior Member
Join Date: Jun 2010
Location: Upstate New York
Posts: 3,717
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We leave the BR vent open about an inch just so there is some small amount of fresh air coming in to the 5er. We also run the ceiling fan on low to help circulate it as well - though I'm not sure that's the best way
__________________
Dave W
2011 Ford F250 6.7 Lariat CCLB, Gone but not forgotten
2014 Montana High Country 343RL (sold it!)
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08-12-2015, 09:33 AM
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#10
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Senior Member
Join Date: Oct 2010
Location: OH - H - EYE - OH
Posts: 733
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Quote:
Originally Posted by SkiSmuggs
Going through a heat wave in Montana and single 13.5K is having trouble keeping up. I am not sure whether it is best to have the roof vents open or close. Part of me thinks it is still good to let the rising heat escape and part thinks everything closed is best while running the AC. For now, LR vent is closed and bathroom vent is open in the fiver.
Thoughts?
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Kind of off topic but would a little table top fan help cool the area?
__________________
On 10/15/10,
Puchased a 1989 Class B Dodge Xplorer In Cash
On 5/2/15, Fiance' purchased 2002 Dynamax Carri-go in cash.
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08-12-2015, 09:56 AM
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#11
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Senior Member
Monaco Owners Club
Join Date: Jan 2008
Location: Olympia, Wa
Posts: 2,772
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Vents closed, window shades closed on all but needed light area's and vent pillows with the aluminum foil on one side. Awning down for as much shade as possible. Wind screen cover and under a tree.
LEN
__________________
2004 Clss C 31' Winnebgo
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08-12-2015, 10:06 AM
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#12
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Senior Member
Join Date: Oct 2012
Location: Foley AL
Posts: 7,138
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Quote:
Originally Posted by OLYLEN
Vents closed, window shades closed on all but needed light area's and vent pillows with the aluminum foil on one side. Awning down for as much shade as possible. Wind screen cover and under a tree.
LEN
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Absolutely !!
__________________
2005 Newmar Essex 4502, 2013 Caddy SRX
1997 HR Endeavor 37, CAT, 1996 Geo Tracker
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08-13-2015, 12:29 AM
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#13
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Senior Member
Join Date: May 2013
Location: North Central Vermont
Posts: 1,485
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Quote:
Originally Posted by OLYLEN
Vents closed, window shades closed on all but needed light area's and vent pillows with the aluminum foil on one side. Awning down for as much shade as possible. Wind screen cover and under a tree.
LEN
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We'd love shade! Not much of it in Montana or now, Idaho.
We have a table top fan. DW thought the cats on our bed needed it more than we did in the living room. Guess I'll have to get one of the 12v fans out of front storage. LOL
__________________
2015 F350 XLT PSD CCSB SRW, Andersen Ultimate hitch
'12 Cougar High Country 299RKS, Mor/Ryde Pinbox
1/77 Armor Bn, 5th Mech, I Corps
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08-13-2015, 08:11 AM
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#14
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Senior Member
Join Date: May 2013
Location: North Central Vermont
Posts: 1,485
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Quote:
Originally Posted by OLYLEN
Vents closed, window shades closed on all but needed light area's and vent pillows with the aluminum foil on one side. Awning down for as much shade as possible. Wind screen cover and under a tree.
LEN
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What do you mean by wind screen cover?
__________________
2015 F350 XLT PSD CCSB SRW, Andersen Ultimate hitch
'12 Cougar High Country 299RKS, Mor/Ryde Pinbox
1/77 Armor Bn, 5th Mech, I Corps
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