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Old 06-24-2019, 12:48 PM   #1
Thor Owners Club
Join Date: Feb 2019
Posts: 41
Thor Vegas Roof AC While Driving

Hi All,
We are in the process of checking out a lot of motorhomes as we begin the journey of purchasing our own Class A somewhere in the future...possibly near future.
In the meantime, we have made a deposit on the rental of a 2019 Thor Vegas 27.7 for a week in mid August this year. In discussion with the owner, we were told to anticipate lots of hours running the generator because since it is summer and hot, we would need to run the roof air conditioner and to do that, we would need to run the generator, even while driving. That could mean several hours each day, and a sizable charge for those hours running the generator.
After a few days, I got to thinking about that and decided I don't think it makes sense. So would some of you Vegas owners please comment to let me know if the owner is correct. Would we indeed have to run the generator if we want/need to run the roof AC while driving?
2020 Thor Palazzo 33.2
NW Arkansas
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Old 06-24-2019, 01:10 PM   #2
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I just came north from FL., 3 weeks ago, in my 2017 Axis 25.2

The dash air isn't enough in 90° days. You will need to,

#1: Run the generator so you can run both roof top and dash air.

#2: Pick up a 8' X 92?" Insulated drape from Walmart. Lower the overhead bed a few inches, lay the drape over the edge, and lift the bed back up to the ceiling, pinching it up there.

Now the dash air will cool the driving compartment. Of course, if you have more then 2 people traveling, this won't work for your passengers.
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Old 06-24-2019, 01:42 PM   #3
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I drive for a dealership that involves going out of state. When it's hot out I always run the generator and roof air to make the trip bearable. Whether it's a Class C or a 45' diesel pusher, I've got the house a/c going. There's been times when the house a/c was so good that I turned off the dash air.

And, yes, you gotta run the generator to make the 110 volts needed to run the house a/c.
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Old 06-26-2019, 04:22 AM   #4
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If you plan to stay in campgrounds each night, you can reduce your generator time by leaving early each day you travel and hitting the camp ground early so you can plug in. This is a big reason I don't boondock in the summer. Would rather pay campground fee than run genny all night.

If I leave at 6 AM and run until Noon I can usually make around 300-350 miles. You probably would not need your roof air until 10-11 AM. Maybe not at all, depends how tough you are.
1998 Min Winnie, 2000 Winbago Journey, 2015 ACE 29.3
2016 Thor Miramar 34.2
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Old 06-26-2019, 04:43 AM   #5
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Originally Posted by harvnlois View Post
<snip> Would we indeed have to run the generator if we want/need to run the roof AC while driving?
That seems to be the OP's question, which I don't think has directly been answered.
Yes, you must run the generator if you want to use the roof AC while driving.

And I agree with the others, if you're driving during the heat of the day you will want to run the roof AC in order to keep comfortably cool.
2013 Winnebago Sightseer 36V
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Old 07-26-2019, 04:16 PM   #6
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We had an Axis 24.1 until earlier this year. Enjoyed it for many reasons, but when it was hot outside, we had to run the cabin air conditioner while driving to maintain a comfortable temperature, which meant running the generator. It was tolerable without the cabin air until outdoor temps reached 85 or 90.
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gas, roof, thor

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