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Old 02-23-2019, 05:45 PM   #41
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Trailer: 2011 KZ Sportsmen 242SB / 2004 Ram-Cummins 2500 2wd
British Columbia
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Amen on the comments re: Small window units. They're a fraction of the cost of roof mounts, and use substantially less power. A neighbor bought my niece's ancient 'Stickie', and wanted to buy a spare roof-top I had. My advice: Don't get yourself involved in trying to install a high-priced RV unit, unless you're positive the structure will support it, and what about power? The old 'Stickie' had a cupboard at the foot of the bed, with a window above, and a power outlet close. Set A/C on cupboard, shim as required to extend condenser section for venting and drain, plug in! Kewl!
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Old 02-24-2019, 10:07 AM   #42
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Name: Al
Trailer: Casita
Louisiana
Posts: 21
Walmart a/c in right front corner

My Casita did not come with AC and I had to redo all the interior anyway. I saw other units with the AC on the floor by the door and thatís where I put mine. The intake for the condenser comes in on the side and the exhaust exists out the front with a baffle in between. The 6000 BTU unit will cool the camper down to 69į when itís 90 outside in the shade !
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Old 02-24-2019, 10:24 AM   #43
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Name: John
Trailer: Parkliner
Virginia
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My Parkliner came with a 5000 btu window unit. It'll freeze you out.
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Old 02-24-2019, 10:25 AM   #44
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Trailer: 2011 KZ Sportsmen 242SB / 2004 Ram-Cummins 2500 2wd
British Columbia
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That's a pretty neat install, Al. I'll bet it drops the temperature quickly, too (in my opinion, most RV units are way over-sized. 'Instant-cool' is not necessary, just wasteful)
Assuming your power distribution is also under dinette, makes it easy to power up. I also assume you arranged a 'Condensate catch pan' with drain out bottom, through floor?
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Old 02-24-2019, 10:48 AM   #45
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Name: Al
Trailer: Casita
Louisiana
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Drain nipple

Yes, the AC unit had a metal catch pan and I fastened a brass fitting to drain out the condensation water. There is a small hole in the floor that the fitting goes right through. If we are on a concrete slab I put a small catch pan down there to catch the condensation as we live in the south and it drips a lot.
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Old 02-24-2019, 10:58 AM   #46
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Name: Vicki
Trailer: 2019 Scamp 13' with 2015 Nissan Frontier V6
Alabama
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My thanks to everyone posting such great ideas! Especially the pics showing different install methods. This is such a help.
I now have more than one path to research to figure out what will work for me. Thank you all so much!
Vicki
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Old 02-24-2019, 11:06 AM   #47
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Trailer: 2011 KZ Sportsmen 242SB / 2004 Ram-Cummins 2500 2wd
British Columbia
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Quote:
Originally Posted by Altemplet View Post
Yes, the AC unit had a metal catch pan and I fastened a brass fitting to drain out the condensation water. There is a small hole in the floor that the fitting goes right through. If we are on a concrete slab I put a small catch pan down there to catch the condensation as we live in the south and it drips a lot.
And the condensate is essentially 'Distilled', good for batteries.
Can also be drinking water for pets, right from the catch pan.
You could even add a connection for hose (garden or otherwise) to drain away from area of door. No mud!
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Old 02-25-2019, 03:23 PM   #48
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Name: David
Trailer: U- Haul
Massachusetts
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off grid AC

I have been working on running a 900 watt portable rolling ac unit 5000 btu off of my honda 2000 eu generator, works fine, and I have been susscessfull running it off magnum inverter on two 6 volt lead acid batteries (12v), no generator. how long it will run not sure yet,but working on solar powered AC
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Old 02-25-2019, 03:37 PM   #49
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Name: Alexander
Trailer: 1979 Boler B1300
New Hampshire
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So with the AC run off the inverter you are probably drawing close to 1000 watts or about 83 amps at 12 volt. Assuming you have 100 amp hours of usable power from your batteries, you could run the AC for a little over 1 hour on pure battery power. Now assuming ideal conditions, 4 100 watt solar panels would produce around 20 amps of power. So if you use 4 panels you could run for about 1.25 hours. If you use 8 panels, you could run a little over 2 hours and if you used 12 panels, you could run close to 5 hours. Mind you this is spitball approximation. You probably would get less or more depending upon a lot of factors.
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Old 02-26-2019, 07:30 AM   #50
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Name: JD
Trailer: Scamp 16 Modified (BIGLY)
Florida
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As to AC in a small trailer in the real South, anything else is not really and option I care to think about.
Besides the heat there is the unrelenting humidity, not to mention the bugs.
I am happy with the mini-split as to weight and noise factor.
A window unit could be made to work as well, but anything worth doing is worth overdoing as well...
Also the heat pump means that the heater (for hookups) is taken care of as well.
We use our camper for travel and as a mobile motel room that we don't have to carry luggage up to every night.
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