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Old 07-17-2016, 05:07 PM   #1
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Will a second AC help?

We have a new Rockwood 2905ws that we bought in May. It currently has a 15000 AC, but we are thinking about adding a 2nd AC in the front bedroom.

My question... is it worth $1000? Our AC will cool about 20 degrees lower than the outside temperature and that's what I understand to be on par. In texas this weekend it was 100 outside and the camper was 80 inside during the day and around 68 during the night.

Would adding a 2nd AC make the camper cooler during the day or would a 20 degree difference still remain? Would 2 ACs keep the camper say 70 or so during a 100 degree day?

Thanks

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Old 07-17-2016, 05:26 PM   #2
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Will a second AC help?

More cooling capacity will help. May not achieve the 70 but get you another 10 degrees. There are some thread on here with people adding a second AC and running this on a separate 20 amp circuit.

I have thought about doing the same thing.
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Old 07-17-2016, 05:36 PM   #3
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Thinking of doing this to my 2013 831ress , But putting the second Ac in the vent above the main living area really don't need it in the bed room as it it gets plenty cool at night , also thinking of going with a power saving Ac so I can run it of my generator when I boondock , probly just run a separate power an plug straight into the pedestal at the campground
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Old 07-17-2016, 05:39 PM   #4
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I believe the main problem with temp control in modern TTs and 5th wheels is a lack of proper insulation. It's like living inside an oil drum in full sunlight. Not much you can do about it unless you can install or pump more into the walls and ceiling. I'm sure a second AC would help, just don't know how much and that is only if you are wired for 50 amps, because you WILL need it to run two units.
We had a Keystone Passport before our Aviator and it had only one AC unit and it struggled to keep it livable inside. Our Aviator has as much as 5" of slab styrofoam in the walls and ceiling and we only use one AC [15,000 btu] even at 100* outside. It still cycles on and off when set at 72*. We haven't used the bedroom AC in over two years.
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Old 07-17-2016, 05:49 PM   #5
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Defiantly add the 2nd air will make a big difference. I have two on mine and in 96 degree heat i can cool to 72 degrees and if some shade even better. Later RJD
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Old 07-18-2016, 10:03 AM   #6
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Thanks for the feedback. Im just over thinking it I guess. Will need to pull the trigger and just do it I guess.
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Old 07-18-2016, 10:12 AM   #7
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You could try putting reflectix insulation cut to fit the windows in the bunk/bedroom areas too. I did this before our trip to Branson, where the weather was 96+ all week and our 13,500BTU unit kept up with it all week and kept temps in the low 70's. It even turned off a few times. Before in temperatures similar, it was constantly running and not keeping up. It only costed me $10 for the roll....plus it keeps the sleeping areas nice and dark!
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Old 07-18-2016, 03:24 PM   #8
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I also live on the Texas Gulf Coast and my 38 foot fiver has two ACs, 15000 ducked in the living area and 13,500 ducked in the bedroom. They do an excellent job even in the Texas summer.
I didn't like the non-ducked 13,500 that I had in the bedroom of my last fiver. It is off or on and it did make lots of noise. Good Luck
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Old 07-18-2016, 04:20 PM   #9
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At 100 degrees, my single ducted 13.5 will probably only make 80 / 81 degrees. So, I added a Haier 10K BTU portable in the garage (toy hauler) on its own 20A feed for hot weather camping. With it both running I can easily get to my goal, which is about 76 - 77 degrees. The Haier sits on the floor and is ducted through the floor, the nice things is how quiet it is and that in a pinch I can run it off of my Honda 2000EU and sleep in the bed back there. I also love that it has dehumidifier and fan only modes, as well as having a remote control. When I'm home, I put in the bedroom and save on my electric bill. I sound like a Haier commercial, I know.

I have reflectix for all windows and have added insulation to the entire floor.
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Old 07-18-2016, 04:35 PM   #10
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you can also ass the reflectix out side the slide walls , being as mine are black they really absorbed the heat . after covering with the reflectix it cut the AC use in half . where it could not keep up set at 70 to turning on and off like one would expect . Also did the windows
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