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Old 07-29-2014, 09:25 AM   #11
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Forgot to mention that we're in the planning process of installing two fans. One in the bottom bunk where it gets really stuffy, and an oscillating one in the bedroom to get a little more air movement without having it blow directly on us. I replaced the vent in the bedroom from the louvered type to a twist-adjustable dump type because DW and I kept arguing about who would get the air blowing directly on us at night... The new one disperses air pretty well, but a little of it is wasted because it blows out 360* and the vent is in the corner of the room.
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Old 07-29-2014, 12:00 PM   #12
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Newbie, just purchased a used 2010 Grey hawk one AC when I close the main vents it does not seem like a lot of air is blowing in the back bedroom is this normal. And what should the temp be when blowing out the vent or duct work.

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Old 07-29-2014, 08:00 PM   #13
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Quote:
Originally Posted by CThomsen View Post
Currently on our second trip in our 2013 315fbhs. We're in tx-100 degrees daily. Should the vents on the bottom of the a/c unit be open or slid shut for max cooling? I have all of the circular ducts open but am unsure what to do with the sliding vents on the bottom of the unit itself. Thanks

Unless you close or partially close those unit vents, no air will be forced into the ducts.
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Old 07-30-2014, 07:20 AM   #14
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Cthomsen, The purpose of those vents is to "dump" cool air into the living area to rapidly cool that area, then once the living area is cool, close them to force the air through the ducts to the rest of the 5er. Having said that, I have a 31.5FBHS and I discovered that if one camps south of the Masson-Dixion line, one needs a second AC unit installed.
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Old 07-30-2014, 12:34 PM   #15
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Having said that, I have a 31.5FBHS and I discovered that if one camps south of the Masson-Dixion line, one needs a second AC unit installed.[/QUOTE]

X2 on that. Camp a lot in the southeast with a 36 foot fifth wheel and the second ac is a must for the bedroom and the hot natured DW!

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Old 07-30-2014, 02:03 PM   #16
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Our a/c is a 15000btu and is keeping up well here just west of ft worth. I've kept the unit vents partially open during the day and closed them at night. Thanks for all the replies.
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Old 07-30-2014, 03:07 PM   #17
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The AC unit cools more efficiently with the vents on the AC open and air is directed straight down. However, it is much nosier in most cases. In our Class C, I use the AC vents themselves for initially cooling, and close the bedroom door during the daytime. When the unit reaches a comfortable temp I then close the AC vents and use the ductwork to cool the unit. The ductwork is not very efficient but does ok after initial cool down. Seems like a lot of cool air is "wasted" traveling thru the ducts but that is a problem in the design I suppose.
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Old 08-01-2014, 12:01 AM   #18
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I just got back from 4 - 98 to 100 degree days and 3 - 80 degree nights in Roaring Springs, Tx. No shade in the spot I was parked in. Had 2 teenage grandsons with me who were in and out of the 5er all day. Single a/c ran most of the time but with the aid of a 20" box fan and 2 10" personal fans, we all were comfortable during the day and very cool at night. Left all vents wide open in the main area, bedroom and bunkroom. We survived ok but my next Jayco will definitely have two units.
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