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Old 07-10-2016, 10:09 PM   #1
rsl
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Tips on keeping a 371 cool

I am having issues keeping my 371 cool even with the 2 15K A/C's. The main area does a so so job keeping cool with the one AC in the main bedroom. However in the garage area, I cannot seem to get and keep cool in the heat of the day with the AC in there; even with the quick dumps on that AC open. I have figured out if I put the top bunk down about a foot it does seem to work a little bit better. I am in need of advice/suggestions. I thought about taking a piece of fabric or something starting at the front quick dump vent and pinning it to the ceiling to make a tunnel for the cold air to force it out from the bunk area.......Sort of like they do in refrigerated tractor trailer, trailers. Thoughts/ideas/suggestions?

I do find the lack of cooling ability strange since this is a 39 foot unit with 2, 15k AC's. My last camper was a 2009 36 foot 5th wheel with one 15k AC and it had no problems (except for the 9 degree plus days in the middle of day with no shade) keeping the camper at a nice cozy 74 degrees.
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Old 07-11-2016, 04:41 AM   #2
ctbruce
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I added a couple of small fans to circulate the air in my Impact last week. It helped a lot. Cooled the camper down from a toasty 100 to 78 in a couple of hours. Both of my units have a split dump also. I open one and close the other, which pushes some of the air through the vents. Good luck with your issue.

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Old 07-11-2016, 07:40 AM   #3
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We have one of these portable a/c's we run when we first get to the campground to help cool it down faster ,and then sometimes we have to turn it back on thru out the hottest part of the day when its up close to 100 degrees
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Old 07-15-2016, 10:46 AM   #4
rsl
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I just fid it odd that a 2010 36 foot 5th wheel stayed pretty cool with one 15k unit yet to 15 k units wont keep a 39 footer cool that supposedly has super insulation because of the blizzard package?????
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Old 07-15-2016, 12:19 PM   #5
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We are camping this weekend and asking ourselves the same question......we had a 29' Outback with 13500 btu and it kept the unit very cool during all conditions for 10 years. Our new 31' Cougar TT had 15000 btu and just cannot keep up. Plus windows are tinted on this new one. How could 2' make that much difference - Especially with a stronger a\c?


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Old 07-15-2016, 12:20 PM   #6
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*has not had


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Old 08-16-2016, 10:07 AM   #7
alsdas88
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Quote:
Originally Posted by lesleyinky View Post
We are camping this weekend and asking ourselves the same question......we had a 29' Outback with 13500 btu and it kept the unit very cool during all conditions for 10 years. Our new 31' Cougar TT had 15000 btu and just cannot keep up. Plus windows are tinted on this new one. How could 2' make that much difference - Especially with a stronger a\c?


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A lot of the AC problems we experience is just due to the new modern environmentally friendly Freon gas that we are now being forced to use. The older units had a different Freon gas that was far better than what is allowed to be used today. A 13.5 unit with the older gas is a far better capable unit than a modern 15 unit simply because the Freon is just not as good. You might get the same capability in cooling if a 18 unit was used, but that would be a heavy and large unit to put on the roof of most RV's.

I remember back in the 70's my dad's Buicks would blow snow out of the AC systems on a hot humid summer day. Today, with the less efficient Freon being used in modern vehicles, that would never happen.
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Old 08-16-2016, 10:41 AM   #8
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Refrigerant that is not as good as Freon is one I never thought of. Definitely a factor.

Varying installation quality (ductwork, main unit install/chambers, paths to roof not sealed, etc.).

Varying insulation in camper

Varying heat loss/absorption (probably not correct terms) in camper

Varying cubic feet to cool. Remember, length of camper doesn't fully explain the issue. It is cubic feet of air to cool.

Slides? Varying number and sealing

Sun/shade/outside temp

Overall quality of a/c unit

I have a 38' TT with two a/c units (one 15 and one 13.5). It does OK in mid 90's... but nothing to write home about. I have a 25 degree delta, so they are working correctly. The campers just aren't insulated that well.

Remember to keep you a/c going. Maintaining temp is easier that getting there if it is hot out.


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Old 08-16-2016, 01:38 PM   #9
ctbruce
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You might check this thread out.
http://www.keystonerv.org/forums/showthread.php?t=25849

Chip Bruce, RPH
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Old 08-16-2016, 07:41 PM   #10
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Originally Posted by lesleyinky View Post
We are camping this weekend and asking ourselves the same question......we had a 29' Outback with 13500 btu and it kept the unit very cool during all conditions for 10 years. Our new 31' Cougar TT had 15000 btu and just cannot keep up. Plus windows are tinted on this new one. How could 2' make that much difference - Especially with a stronger a\c?


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IMO those tinted windows we have now are drawing a ton of heat. Thankfully, my Cougar came with real window blinds not the light weight folding ones most prevalent ones.
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