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Old 07-23-2014, 02:11 PM   #1
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Exclamation A/C and Roasting in Las Vegas

Not sure which forum to put this question. Moderators, please move this post if necessary.

We have to be in Las Vegas for the next month with our 29' Newmar. So far, the daytime temp varies from 100 to 112 degrees. This is our first experience with trying to keep the rig somewhat cool in extreme heat. We are in an RV park with good electric and parked under a sparse tree to keep some of the afternoon sun off the roof. We put Reflectix foil insulation in the sunny windows and foam pads in the vents.

Yesterday, we went out for a couple of hours and returned to find the A/C circuit breaker had popped. The rig was 103 degrees inside. Yikes.

Would appreciate advice and recommendations from more experienced hot weather campers. Thanks.
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Old 07-23-2014, 02:29 PM   #2
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That's really hot. We'd need more information about your rig. How many ACs do you have, is it a 50 amp unit, etc. In that sort of heat you're going to need both ACs running to keep it under control. Sounds like you've taken care of blocking the windows and vents. I have no idea why the breaker on your AC would kick. That statement makes it sound like you only have one AC. If that's the case, all bets are off.
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Old 07-23-2014, 02:30 PM   #3
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It is difficult to stay comfy in those extreme temps. I would caution you if you have double pane windows. Using Reflectix on the inside can cause the window seal to fail due to extreme heat due to reflection.
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Old 07-23-2014, 02:39 PM   #4
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glad your dogs weren't in there I almost went to vegas this month and decided against it.. because of the heat.
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Old 07-23-2014, 02:40 PM   #5
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It is difficult to stay comfy in those extreme temps. I would caution you if you have double pane windows. Using Reflectix on the inside can cause the window seal to fail due to extreme heat due to reflection.


It is much better to get window shades on the OUTSIDE of the window. It is better to reflect as much heat outwards as possible before it gets through the glass.
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Old 07-23-2014, 02:40 PM   #6
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The foil insulation you're using won't compromise your dual pane window. It does a good job of reflecting as we've found out with our times in Vegas. Don't know how many a/c's you have but to also move. Some air around get a fan or two. Again if you only have a 30 amp service you will be limited to what you can run. We fortunately have 50amp service and the two a/c's and tower fans do a good job. Good luck and hope you can stay comfy.
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Old 07-23-2014, 03:01 PM   #7
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glad your dogs weren't in there I almost went to vegas this month and decided against it.. because of the heat.
Appreciate the quick replies! Thankfully, no dogs. Our devoted Sheltie passed this spring after 14 years of camping companionship. We would never have left any pets alone anyway.

We have only one 13.5 A/C unit. In the three years we have had this rig, we probably only had the A/C on a handful of times. Hot weather RVing isn't our usual! We have a tower fan on the doghouse which helps.

Thinking about some kind of shade cover over the AC unit? It has a black shroud, to boot!
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Old 07-23-2014, 03:06 PM   #8
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I'm here in Vegas too, I recommand keeping the bathroom door shut and close off any vents in there. No need to keep the bathroom cool if you only use it a few mins a day, plus limits the space (sqft) the AC needs to cool.
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Old 07-23-2014, 03:08 PM   #9
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Also, use the reflectix foil insulation on any and all skylights. You could close off the bedroom too during the day and open it back up around 6 or 7 at night.
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Old 07-23-2014, 03:10 PM   #10
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We have only one 13.5 A/C unit.:
That sucks. Will be almost impossible for it to keep up.

My best recommendation would be to go out a pick up a portable unit and get some extra cold air maybe into the bedroom area at night and the living area during the day.

Like this...12001 - 15001 - 9001 - 12001 - Portable Air Conditioners - Air Conditioners - Air Conditioners & Coolers - Heating, Venting & CoolingÂ*at The Home Depot

Best of luck! Stay hydrated!
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Old 07-23-2014, 03:14 PM   #11
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I'm here in Vegas too, I recommand keeping the bathroom door shut and close off any vents in there. No need to keep the bathroom cool if you only use it a few mins a day, plus limits the space (sqft) the AC needs to cool.
Thank you for your service, Kevin-B! The only reason we are here for the month is because our daughter is completing her med tech training at Nellis AFB. Haven't seen her since basic and we would walk through the fires of h*ll to spend time with her before she leaves for her next post -- Alaska! What a change that will be.
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Old 07-23-2014, 03:20 PM   #12
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Thank you for your service, Kevin-B! The only reason we are here for the month is because our daughter is completing her med tech training at Nellis AFB. Haven't seen her since basic and we would walk through the fires of h*ll to spend time with her before she leaves for her next post -- Alaska! What a change that will be.
You're welcome. FYI Nellis has an RV park with lots off trees for shade. Your daughter could get you guys set up there; rates are cheaper.

Desert Eagle RV Park

FYI: I evacuate to Mt Charleston for the weekends.
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Old 07-23-2014, 03:34 PM   #13
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If your floor-plan allows it bring your slide(s) in during the day, less roof, less square feet inside.
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Old 07-23-2014, 03:41 PM   #14
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The foil insulation you're using won't compromise your dual pane window. It does a good job of reflecting as we've found out with our times in Vegas. Don't know how many a/c's you have but to also move. Some air around get a fan or two. Again if you only have a 30 amp service you will be limited to what you can run. We fortunately have 50amp service and the two a/c's and tower fans do a good job. Good luck and hope you can stay comfy.
I agree. And ... the key to Reflectix is to keep it as close to the glass (especially the windshield) as possible. Try to reduce any air space between the glass and insulation.

If you don't already have one, you may want to invest in a Progressive or similar protective device. It's possible you are experiencing low voltage at the campground.

EMS-PT50C
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