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Old 02-03-2013, 03:04 PM   #1
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Side mounted AC vs. Roof/ceiling mounted AC

Is there a preference for the AC mount location when deciding on a new trailer?

I saw a youtube video that stated that wall mounted AC units have more water damage issues. Any truth to that?
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Old 02-03-2013, 03:30 PM   #2
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The wall mounted units just don't have the btu output the roof airs have. We had a wall unit that was fine part of the time, but would just not cool enough to keep up with Texas summer temps....
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Old 02-03-2013, 03:45 PM   #3
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Would 8K be enough for a 16' living space?
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Old 02-03-2013, 04:04 PM   #4
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All I know is the side mount units are just a home window AC mounted in the trailer. And, as such they are a heck of a lot cheaper. As to how good it works I suppose that could have a much to do with how wll the trailer was insulated as it does the unit it's self?
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Old 02-03-2013, 04:52 PM   #5
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I had a 23 foot C with a 12K btu roof unit. If it hit 85F it was a dog.
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Old 02-03-2013, 06:02 PM   #6
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Ry, may work in Canada, but down here it is not practical in the summer....
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Old 02-04-2013, 06:18 AM   #7
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I had a 23 foot C with a 12K btu roof unit. If it hit 85F it was a dog.
A class C has a lot of glass area. Still, you'd think a 12k unit would have done it. I wonder if it was working correctly?
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Old 02-04-2013, 06:46 AM   #8
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Our little 17' EggCamper comes with a 5K BTU wall mount AC and if the sun is shining directly on the camper on a hot day it can't keep up with the heat. In the shade, or once the sun goes down, it can handle it okay. Of course there isn't much insulation in an all fiberglass molded camper. If we camped more in the heat of the summer I would replace it with an 8k BTU. They are just household type units so they are very inexpensive to replace.

I don't know why the wall mount units would be more susceptible to water damage, as long as they are properly mounted.
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Old 02-04-2013, 07:32 AM   #9
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A class C has a lot of glass area. Still, you'd think a 12k unit would have done it. I wonder if it was working correctly?
It put out cold air. Just not enough.
If started early enough it can maintain pretty fair, but if you come back from being out and about it takes hours.
Same rig with 15K unit did much better.
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Old 02-04-2013, 07:39 AM   #10
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I have a 14ft with a top mount 13.5 BTU. Runs on high to initially cool down the trailer - usually while setting up - and on medium setting the rest of the time. Worked well even in the 100 degree weather last summer.

There are two adjustable blower vents that go to the front and rear of the rig. To me, that is the best advantage of the top mount. I can re-aim where needed, as one can in a wall mount, but often a wall mount is blowing width-wise to about 8 feet across to the other wall, while mine is blowing lengthwise to the entire 14 feet.

It can run converted to 15 amp out of an outside house outlet, and, it can run from a basic $300 generator.
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Old 02-04-2013, 07:46 AM   #11
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I would think the biggest "disadvantage" (if there is one) to a wall mounted unit is the uneveness of cooling the whole area. The age-old, "It's cold right next too it...not so much 10' away" idea. Whereas a properly place ceiling mount not only affects the interior air at it's worst, but can blow evenly front-to-back.
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Old 02-04-2013, 09:00 AM   #12
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Ya, the roof mount is probley better for air circulation I suppose. I know I love my roof mount unit but, if I ever had to replace it I would not like the price. I worry about that.
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Old 09-28-2016, 01:47 PM   #13
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Clearance issue

I am surprised no one mentioned a clearance issue with the roof top mount. I also was expecting more leaks from the roof top mount then the wall mount. I am buying a trailer and was offered the roof top for the same price as the wall mount. I turned it down and was looking for support of that decision
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Old 09-29-2016, 08:18 PM   #14
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I am surprised no one mentioned a clearance issue with the roof top mount. I also was expecting more leaks from the roof top mount then the wall mount. I am buying a trailer and was offered the roof top for the same price as the wall mount. I turned it down and was looking for support of that decision
I have never had a clearance issue, or leaks. But, if the side mount gives you peace of mind, then it is a good decision for you.
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