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Old 08-04-2016, 02:55 PM   #1
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Anyone ever added a wall mount AC?

Anyone ever added a wall mount air conditioner to a smaller trailer like some new TTs come equipped with?
I'm thinking 7000 BTUS would be enough for a 20 ft box and I could use my 2000 watt quiet genny to power it instead of the bigger Coleman that thaks 3000+ watts (and big genny) to start.
Have a perfect spot above the foot of the bed underneath a small cabinet.

Ideas anyone?
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Old 08-04-2016, 03:06 PM   #2
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Go for it. If you can remove it for travel and close it up so it's watertight when needed, why would it be a bad idea?
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Old 08-04-2016, 03:50 PM   #3
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A 2000 watt generator produces essentially 20 amps. Most roof A/C units will run on 20 amps. My 15,000 btu unit does. Turn the temp high and and A/C control to cool. Set the fan to low speed and always on (not auto). Once it is running, set the temperature to your desired temp and let the compressor cycle on an off as needed.
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Old 08-04-2016, 04:23 PM   #4
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Many generators that are called 2000 are not. Honda eu2000 is a 1600 watt, 1800 surge, generator, capable of 13.6 amps.

I run a 8000 BTU portable AC with my Honda eu2000. It runs about 6 hours, with the compressor running constant. A 7000 BTU should run fine.
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Old 08-04-2016, 07:08 PM   #5
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Finding good ways to keep the heat out and the cool in will help a lot, too.
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Old 08-04-2016, 08:06 PM   #6
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My weekender 19' came with a 5000 btu Ac I upgraded to a 8000btu energy star rate and am very happy I did have to track down a bigger outside grill cover and I remade the inside cabinet bigger also as it only sticks out 1" from the side of the trailer
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Old 08-05-2016, 04:36 PM   #7
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If it were me, I would not put another large hole in the trailer wall. The structure would most likely not support the weight, much less when traveling down the road.
Can it be done? Sure. I wouldn't.
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Old 08-05-2016, 04:46 PM   #8
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They make room ACs now that sit on the floor and only require a small window insert to blow the hot air out. Seems like a better option than cutting a hole in your rig.

https://www.amazon.com/Honeywell-MN1...ioner+portable
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Old 08-06-2016, 06:13 AM   #9
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A load bearing shelf has to be designed and installed (not a big deal at all). There is a cabinet above the area for hanging support also. So a combination of shelf brackets down and attachment to the bottom of the cabinet will be sufficient to hold any loads imposed. This is a project for this winter.
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Old 08-06-2016, 06:26 AM   #10
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Quote:
Originally Posted by raineman View Post
They make room ACs now that sit on the floor and only require a small window insert to blow the hot air out. Seems like a better option than cutting a hole in your rig.

https://www.amazon.com/Honeywell-MN1...ioner+portable
Portable AC units, that have one hose out the window, are less efficient then standard window or wall units.

Standard ACs use outside air to cool the condenser coils, pulling air in the sides and out the back.

Portable single hose ACs take cooled air from the room and push it thru the coil and outside. As they push air out, hot, replacement air, has to come into the cooled area. That can happen thru gaps, door seals or any opening from the outside.

There are a few dual hose portable ACs on the market.
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Old 08-06-2016, 06:40 AM   #11
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Old 08-06-2016, 06:41 AM   #12
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Old 08-06-2016, 12:47 PM   #13
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I have a 2Kwatt Generator but it refuses to run even a 5,000 BTU window unit. Works for fan but soon as compressor kicks in it shuts down and overload lights up. Tried to over ride the governor on the engine and rev to full and it ran compressor but fan ran so fast the thermal overload shut the A/C fan off.

dont even attempt this with the roof unit. Mine even the fan kills the gen.

i would recommend having at least a 4Kwatt for A/C.

I got two small window units just to help the roof unit keep up in 100 degree summers. After 21 years of age the duo therm is on its last legs. Had to use a 30 amp breaker, hard start capacitor and Nest to help it out, Nest sets to 78 to 76, window units get to 71 and kick off. One is in the bedroom and the other up front.
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Old 08-06-2016, 12:53 PM   #14
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Yup,

Did this in my Ole Toyhouse several years ago. Got the idea from the Travel trailers that have window units.

When finished, mine looked factory installed and worked like a champ...

Follow the thread linked below. There are a lot of photos and documentation, including some infrared photos that show airflow and temperatures of the frig and AC unit.

How to - Window A/C in Dolphin - Improvement and Do-It-Yourself Projects you have done to Share! - Toyota Motorhome Discussion Board

..
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