Good Sam Club Open Roads Forum: General RVing Issues: AC question
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DownTheAvenue

Sunny South

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Joined: 07/30/2014

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Posted: 08/10/19 06:26am Link  |  Quote  |  Print  |  Notify Moderator

Rice wrote:

It depends on the unit. My four-door Norcold uses about 7 kwh/day when it's on electric in moderate conditions. In the summer in South Texas, it will be running close to 24 hours/day, which would be about 10 kwh/day.


$0.15 per kwh is the national average.
At 7 kwh per day equals $31.50 per month
At 10 kwh per day equals $45.00 per month

WTP-GC

FL

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Joined: 12/22/2015

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Posted: 08/10/19 06:37am Link  |  Quote  |  Print  |  Notify Moderator

the bear II wrote:

Leaving anything running unattended is asking for trouble. Moisture can be managed with products made to eliminate moisture in stored RVs.

Based on the stories I've seen in the RV forums and on the news a majority of RV fires are traced back to the fridge.

Read the recent post about the A/C units with smoke coming from the vents. https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/29945396.cfm

Of the zillions of RV’s out there (new, old, should be condemned, etc.), you rarely ever hear of anything like this. It’s a lot of “chicken little” to sit around and worry about what might happen. If that’s how we operated, we’d never get out of bed in the morning.

I know people who leave their RV setup on a permanent site in FL and come back to visit no more than about once or twice a month. They leave their AC turned up a little and the fridge on all the time. Granted, electric rates and usage differ by region, but their metered usage is less than $50 per month.

OP, I’d say give it a try and see what results you get. No one can tell you what to expect, but a month or two of experience will give you plenty of info. Leaving both items running will do absolutely no harm.

Please don’t be the person that spends all their money on a rig and site rental, but then can’t afford to properly use and/or maintain.


Duramax + Grand Design 5er + B & W Companion
SBGTF

pianotuna

Regina, SK, Canada

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Joined: 12/18/2004

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Posted: 08/10/19 08:39am Link  |  Quote  |  Print  |  Notify Moderator

My 6 foot Dometic uses 5.7 KWH per day when the ambient temperature hovers around 20 C (68 f).

WTP-GC wrote:

Fridge won't eat up much utility cost.



Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

ajriding

st clair

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Joined: 12/28/2004

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Posted: 08/10/19 09:46am Link  |  Quote  |  Print  |  Notify Moderator

AC - no. You will be able to cool it off pretty quick when you arrive.

Fridge - leave running. Set temp so freezer is still freezing and fridge in the low 40's. Absorption fridges take a long time to cool down from being off, so by the time it cools enough to be a fridge your weekend is half over.
I have put in frozen foods and cold foods then turned on the fridge and all was fine, but I was driving and not accessing the fridge either.

For one week absences leave on for sure, if 3 weeks or a month then turn it off.
Absorption fridges like to be left on, so they will be fine, where you will wear your AC out running it all the time.

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