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Old 09-21-2016, 03:07 PM   #21
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Sure wish I would have seen these post before last week. I purchased a new 2017 Grayhawk 29 MV. Before we left the dealership we voiced concerns about the AC not cooling. We were told it takes time to cool down the coach. Brought it home and plugged it in. Temp outside was 92. Temp inside was 88. I live in Louisiana and if I can't use my new motorhome when the temp is above 80 degrees then I will not be going camping very often.
Bringing it back to the dealership next week but from what I'm reading I think I may have made a BIG mistake. Why don't they tell us these things before we purchase something they know won't work in our climate?
29 ft is right about that point where two AC units might be necessary on a really hot and humid day. But not everybody is interested in paying for two AC units, nor trying to find a campsite with 50 amp electrical service to power them. The larger your unit, the longer it takes to cool down. My old 26 ft toy hauler wasn't insulated particularly well, and it was a very large open space due to the very high ceiling in the back half. Took 3-4 hours to cool it adequately, and that's with the reflectix window insulation installed. If you don't cover your windows, the sun can introduce more heat than your single AC can get rid of. It also helps to be starting your day after a night of AC running in the unit so it can catch up. Every little bit of help you can give a single AC unit, the better the results.
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Old 09-21-2016, 04:06 PM   #22
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We close off the ac vents in bedroom and bathroom and close the doors, open the AC vents on the air conditioner itself, and use Heatshield Window Shades on the cab windows. It always stays comfortable in the RV.

https://www.heatshieldstore.com/sun_...50_w_rvm_/2016
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Old 09-21-2016, 05:25 PM   #23
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We close off the ac vents in bedroom and bathroom and close the doors, open the AC vents on the air conditioner itself, and use Heatshield Window Shades on the cab windows. It always stays comfortable in the RV.

https://www.heatshieldstore.com/sun_...50_w_rvm_/2016
Yep. I can tell you that leaving the cab windows uncovered and/or uninsulated on a hot sunny day, will heat up the entire rig. It's amazing how much heat can radiate from in there.
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Old 09-21-2016, 05:36 PM   #24
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On real hot days while driving with the cab AC on, I crank up my generator and turn on the roof air a couple of hours before camping for the night. Helps to lower inside temperature prior to setting up at a camp ground.
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Old 09-21-2016, 07:44 PM   #25
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It's a shame when you buy a $125,000 vehicle and you have to do all of these things to try and enjoy it when it is less than a week old. Someone should be held accountable.
Jayco should insulate better or offer a 50 amp option with 2 air conditioners for hotter climates. Dealerships should warn customers and not cover up the inadequate air conditioning before we buy them. I'm just pissed that they didn't tell me about the problem when we were in the parking lot and voiced our concerns before we drove away. Now that I got that off my chest I'll get off my soap box and try to enjoy my new coach. We really do love it except for the air conditioning or lack there of. Thanks everyone for the ideas.
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Old 09-21-2016, 08:26 PM   #26
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YOu need to be careful with adding too much A/C. If you have too large, or to many A/C the unit will cool down before it has a chance to remove humidity...you wind up with a cool clammy RV which is very uncomfortable. The A/C is sized for most applications, and yes, if your going to be camping in 100 degree temperature, it's going to be hot. Here in AZ on a day when it reached 105, the interior of my car after only being in the sun for about 15 minutes was 124 degrees. You have a metal box, with hot air on all 6 sides, with windows, doors, sky lights etc your not going to cool it to 72 degrees. I don't know about all units, but Jayco does offer upgrades to larger A/C or a second A/C on many units. Myself, if I knew how I was going to use my RV I would do my due diligence to check and make sure it would work in the climate I planed on using it. There is so much information (including here) on the Web it's very easy to find information on others actual experiences.. I hope you can find a remedy to your situation. Good Luck.
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Old 09-21-2016, 10:05 PM   #27
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Hmmm. Brand new 2017 29 MV. Hot SoCal day of 106. AC on auto high cool; doors/windows closed and shades were drawn. We could never get more than a 9 degree difference between inside and outside temps. Boy! Was it ever hot. We were in partial shade but I can't believe the AC was so weak. It's on our warranty list.

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Old 09-21-2016, 10:16 PM   #28
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Has anyone tried this? It gets pretty good reviews . . .

https://www.amazon.com/ADCO-2407-Win...2%3A2661618011
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Old 09-21-2016, 10:58 PM   #29
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Has anyone tried this? It gets pretty good reviews . . .

https://www.amazon.com/ADCO-2407-Win...2%3A2661618011
Many owners here have that one or one that is very similar such as we do which also includes panels held up by hook and loop tabs for all windows to open it up during the day for the view. Ours also has screens on the side windows to prevent pests with the panels open and the windows down.
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Old 09-22-2016, 07:58 AM   #30
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Originally Posted by ccradeur View Post
It's a shame when you buy a $125,000 vehicle and you have to do all of these things to try and enjoy it when it is less than a week old. Someone should be held accountable.
Jayco should insulate better or offer a 50 amp option with 2 air conditioners for hotter climates. Dealerships should warn customers and not cover up the inadequate air conditioning before we buy them. I'm just pissed that they didn't tell me about the problem when we were in the parking lot and voiced our concerns before we drove away. Now that I got that off my chest I'll get off my soap box and try to enjoy my new coach. We really do love it except for the air conditioning or lack there of. Thanks everyone for the ideas.
Jayco does offer both a second air conditioner and 50 amp option. They just don't offer it on units small enough that it's unnecessary. It's part of the lesson many RVers learn first time around. This website is chock full of lessons you can learn at someone else's expense, should you choose to research it. Jayco probably offers these options on your unit.


Quote:
Originally Posted by tomahawk View Post
Has anyone tried this? It gets pretty good reviews . . .

https://www.amazon.com/ADCO-2407-Win...2%3A2661618011
I have one of those. I still use the reflectix material on the inside of the cab windows in addition to the Adco cover on the outside. If necessary, I also have the inside curtain to string up around the cab windows. That is how much heat can be generated in that cab if you don't take steps.
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