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Open Roads Forum  >  Truck Campers

 > Do you save LP if you use the furnace with slide closed?

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Harleybullet

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Posted: 06/04/12 05:31pm Link  |  Print  |  Notify Moderator

I have a 2005 AF 1150 with one slide and was wondering if at night in the winter if you close the slide (therefore less volume and tighter) would there be a savings in LP fuel and possibly battery drain because you were heating a smaller volume. Any one keep any records on that... it seems you should save?


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Posted: 06/04/12 05:40pm Link  |  Print  |  Notify Moderator

Not enough to notice. But the RV will be a bit warmer.


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Posted: 06/04/12 07:14pm Link  |  Print  |  Notify Moderator

Never tried it, but I would first check if the slide closes over any floor vents.

harold1946

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Posted: 06/04/12 06:24pm Link  |  Print  |  Notify Moderator

I have not kept a record but I have done so and believe it would be a savings. Any time there is less volume to heat or cool there would be a savings.
Using the cubic feet of my slides it is an additonal 188 cu. ft. when they are extended.


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mguay

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Posted: 06/04/12 06:36pm Link  |  Print  |  Notify Moderator

I haven't kept a record.....but it does warm up alot faster!


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kerry4951

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Posted: 06/04/12 07:03pm Link  |  Print  |  Notify Moderator

It has to save some....having the slide out in certainly makes a better tight seal with less cold air infiltration.


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pigman1

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Posted: 06/04/12 07:25pm Link  |  Print  |  Notify Moderator

It's not just the smaller volume you're heating, it's also the heat loss. When you extend the slide you add surface area on the top, bottom and sides that all loose heat. Any windows in the slide ends make it worse as windows loose heat much faster than walls. Definitely use more energy in slide out condition, both in how much gas you use and how much power you use to run the blower(s).

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Posted: 06/04/12 07:44pm Link  |  Print  |  Notify Moderator

Have an 1150 and can answer that real quick...If you use it year round you'll find out soon enough but the fact is this: The wiper seals, especially underneath the slide have a lot of air infiltration where the rails exit the TC. If you camp in a side wind in very cold temps you will notice right away. On extreme cold nights sealing the outside perimeter better utilizes the thickness of the exterior slide wall plus the fact your heating a smaller space. Sometimes if I can't get parked where the wind is not hitting the side with the slide out, I just throw some duct tape around the rails to seal them up better...Just a band aid but it better than nothing.

* This post was edited 06/04/12 07:50pm by KKELLER14K *

brirene

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Posted: 06/04/12 08:39pm Link  |  Print  |  Notify Moderator

joeprinter wrote:

you will save LP but probably not enough to make a difference.


That was my thought also, unless your seals are bad and not preventing most air infiltration and heat loss. Can't see it making a great deal of difference.


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Posted: 06/04/12 07:35pm Link  |  Print  |  Notify Moderator

you will save LP but probably not enough to make a difference.


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