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03-29-2012, 11:46 AM
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#1
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Seasoned Camper
Join Date: Oct 2009
Location: Ft Worth
Posts: 56
M.O.C. #9785
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AC BTU'S?
We have a pamplet about our AC, but it doesn't give the BTU's. It's the original AC that came on the RV when we bought it. We want to add another AC to the front of the RV and need an idea of the size to get. This back one just doesn't cut it in these HOT AS H--- Texas summers. Thanks.
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03-29-2012, 12:01 PM
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#2
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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If I was putting a new one in the rear I'd get a 15,000 BTU one.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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03-29-2012, 12:12 PM
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#3
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Montana Master
Join Date: Nov 2002
Location: Midlothian
Posts: 956
M.O.C. #40
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The original one that came with the trailer was 15,000 and the bedroom has a 13,500. This is what came from the factory.
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03-29-2012, 01:02 PM
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#4
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Montana Master
Join Date: May 2011
Location: Fayetteville
Posts: 4,200
M.O.C. #11401
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I suspect that your original is 15. There s a data plate under the shroud. If that is the case, you should add a 13.5.
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03-29-2012, 01:41 PM
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#5
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Site Team
Join Date: Aug 2007
Location: Omaha
Posts: 6,750
M.O.C. #7560
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You don't say what year your unit is but my 2004 unit came with a 13500 BTU as the original. We were having problems with it so I had a new one put in and it is a 15000. If I would put an A/C in the front I'd be putting a 13500 and make sure it is a low profile! If yoou put a regular A/C in the front you may find it makes the Monte pretty high in measurement and you may have problems with clearance under bridges, in tunnels and etc.
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03-29-2012, 02:10 PM
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#6
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Montana Master
Join Date: Nov 2007
Location: Atlanta
Posts: 908
M.O.C. #7915
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Normal is 13.5 in the front and 15 in the back.
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03-29-2012, 02:32 PM
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#7
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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Depending on the rig and the year. It was confusing knowing which was the main unit and the secondary on the 3750. It was different in 2011 (our main is in the front - which is actually the middle). Our second ac is in the bedroom and I believe that both are 15,000 btu models but I have never checked. I suppose the only way to check is to pull the cover off?
Bingo
__________________
Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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03-29-2012, 02:53 PM
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#8
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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We have 15,000 front and rear, and have experienced no clearance issues on the road.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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03-29-2012, 04:00 PM
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#9
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,707
M.O.C. #7992
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I added a second couple years ago. Following advice from this forum I went with the 15,000. Thought was if main went out the second unit could cool the rig better if it was bigger. I also stayed away from the low profile as the regular unit was only 2" higher than the maxaire vent cover I was removing. I have a little smaller unit than some on this forum but with the reg height 15,000 BTU I'm still only 12'10" high. Jim
P.S. adding that second unit was one of the best mods we have made to the 5'er.
__________________
2006 3000RK
2009 Ram 2500
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03-29-2012, 04:23 PM
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#10
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Montana Master
Join Date: Jun 2009
Location: Williamston
Posts: 631
M.O.C. #9432
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The only reason to go with a 13,500 is if you plan on running an air conditioner with a smaller generator. Many generators will not operatate a 15,000. The 13,500 is a little cheaper, but the difference is not that much. As you said in the South you need all the BTUs you can get.
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03-29-2012, 04:23 PM
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#11
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Those who are recommending a 13,500 unit, need to consider he is in Texas in the summertime. Ours are both 15,000 and we needed it last summer camping in 113 degree heat, and we are in Kansas. At least the same heat and humidity in Texas if not worse.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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03-29-2012, 04:40 PM
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#12
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Montana Master
Join Date: May 2011
Location: Fayetteville
Posts: 4,200
M.O.C. #11401
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A/Cs work better when there is humidity. Arid places make cooling tougher. They cool the air by removing moisture.
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03-30-2012, 04:32 AM
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#13
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Montana Master
Join Date: Mar 2010
Location: Land O Lakes
Posts: 2,783
M.O.C. #10246
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Quote:
quote:Originally posted by awaywego
The original one that came with the trailer was 15,000 and the bedroom has a 13,500. This is what came from the factory.
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Such was the case with ours....
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03-30-2012, 05:35 AM
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#14
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,657
M.O.C. #9969
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15K main unit and added the low profile 13.5K to the bedroom.
__________________
Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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03-30-2012, 06:48 AM
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#15
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Montana Master
Join Date: Dec 2011
Location: Roswell
Posts: 627
M.O.C. #12028
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I don't think you add on will be tied into the coach vent system and will be direct flow, I know on ours, you can hang beef in the bedroom, if you run it on high cold.
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