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08-19-2011, 08:33 AM
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#1
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Junior Member
Join Date: Aug 2011
Location: TX
Posts: 3
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Dual A/C's - Trying to Keep Cool In Texas
I just purchased the Montana 3750 and here in my area (TX) the temp has been in the 100 + range for some time, it has dual A/C's but i still can only get the inside temp down to mid 80's during the hotter periods of each day, any suggestion or is something wrong?
(Moderator's Note: This and following 3 posts have been moved from New Member Welcome to Keystone Questions)
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08-19-2011, 09:22 AM
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#2
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Senior Member
Join Date: Feb 2011
Location: calif
Posts: 193
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I think A/C will only cool 10 degrees below outside temp so your like to
to have 80 degrees.
if you go outside for a few minites and go back inside it will feel much
cooler
__________________
2500HD Chev 6.0
2011 326MKS Cougar
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08-19-2011, 09:25 AM
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#3
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Site Team
Join Date: Jun 2009
Location: Venice
Posts: 5,346
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Welcome to the forum. I'm sorry to say it but a 20° differential in a trailer without shade is just about normal. You can try getting it cooler in the early morning and hope it holds temp a little better. Keep cool, Hank
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Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs ( SOLD .. Gonna miss her ... looking for new 5r)
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
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08-19-2011, 10:11 AM
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#4
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Senior Member
Join Date: Mar 2011
Location: On the road
Posts: 163
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If the temperature difference between the intake air and outflow is 15 degrees or better, your units are doing the best they can. Finding a shady camping spot is about the best thing you can do now.
If you search this board, you'll also find some threads on retaping your A/C ducts. That can help a little. Makes the existing units a little more efficient.
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Kent K.
Full Timer
2010 Raptor 300MP
2004 Harley Screamin' Eagle Electra Glide (for fun), 1 dog (great company)
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08-19-2011, 11:09 AM
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#5
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Senior Member
Join Date: Oct 2010
Location: FL
Posts: 322
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Using fans in addition to the AC will help a lot.
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08-20-2011, 05:51 PM
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#6
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Member
Join Date: Jul 2011
Location: West Virginia
Posts: 42
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I got insulation, From Camping World last year. Cut it to fit the windows and helped a lot in Az last summer.
It looks like aluminum with ins. sandwiched and sewn like a quilt. Cut to fit windows,and it stops a lot of sun. and heat.
Works well in the cold also.
They carry 2 different size rolls. Larger one fits big windows in Slide-out and across the back.
I think I had to buy two large rolls, and a small one.
Measure the windows,footage is on rolls
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04-07-2012, 08:05 AM
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#7
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Junior Member
Join Date: Mar 2012
Location: St. Petersburg, FL.
Posts: 24
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I have a similar problem in Florida's heat and sunshine. I've used the foil window treatment but my wife doesn't like the dark cave-like atmosphere. I'm thinking window awnings and slide toppers, but finances won't allow this until next spring.
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04-07-2012, 08:16 AM
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#8
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Site Team
Join Date: Mar 2009
Location: Fraser Valley BC Canada
Posts: 7,015
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fivergeezer -
I remember reading an article about slide toppers and their effectiveness in keeping the RV's interior cooler in hot weather. If my memory serves me correctly - which may be asking a lot) - slide toppers do little, if anything, to keep the inside temperature down. Unfortunately, I can't give you any factual reference but perhaps others can. If you are going to purchase toppers for the sole purpose of keeping the inside temps down, it might be worthwhile to do some research to find out if, in fact, they actually do work this way.
__________________
2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax
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04-07-2012, 09:45 AM
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#9
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Senior Member
Join Date: Mar 2011
Location: Washington State
Posts: 859
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Quote:
Originally Posted by Festus2
fivergeezer -
I remember reading an article about slide toppers and their effectiveness in keeping the RV's interior cooler in hot weather. If my memory serves me correctly - which may be asking a lot) - slide toppers do little, if anything, to keep the inside temperature down. Unfortunately, I can't give you any factual reference but perhaps others can. If you are going to purchase toppers for the sole purpose of keeping the inside temps down, it might be worthwhile to do some research to find out if, in fact, they actually do work this way.
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Festus: In my opnion the slide toppers do help keep the interior cooler. I have felt the sidewalls in the slide in the direct sunlight, then the ceiling of the slide and there is definetly a noticible difference in temperature. Just my 2 cent worth. Happy Cool Campin.................Ron
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Ron
99 Freightliner FL70 Western Hauler CC 300 HP Cat/Chipped/ Allison Auto
12 Montana 3800RE/Level-Up Auto Leveling/Slide Toppers/MorRyde Hitch/VuQube 2000
01 F350 7.3 PSD Crew Cab DRW 4X4 6 Speed/Chipped
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05-16-2012, 11:35 AM
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#10
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Member
Join Date: Apr 2012
Location: Houston, Tx.
Posts: 64
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Insulation from Lowe's
I too, have my Alpine 3200RL in west Texas. We have already had ays of over 100 degrees. I bought the quilted insulation that was talked about in one ove the above post from Lowe's for $42.00 for the 4 ft. x 25 ft. roll. Cut them to fit all the windows and have no problem getting my RV down to 71 degrees. It sure made a big differance in the cooling. The local RV store wanted $75.00 for the same stuff.---Smitty
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05-16-2012, 11:59 AM
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#11
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Senior Member
Join Date: Sep 2009
Location: North Carolina
Posts: 1,037
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The foil type insulation is great. We used it one summer on my pop up tent ends and it made a world of difference. I could see how it would work with the windows in 5er.
When we bought our 5er that one request I had, to get the extra AC. we got the 13.5K unit in the bedroom it is NOT ducted and we used twice last summer. First night I had to get under the covers to keep from being cold. I usually sleep on top of them, not the nights we ran the 2nd AC. IT worked fine in the SC hot&humid summer months. We got eh inside down to around 73/75. that was comfortable compared tot eh temps outside. the year before we had the TT with one 13.5K AC I think the best we saw it was 87 inside during the day the AC worked its behind off all day and might have cut off in the middle of the night. One morning it was hot as I was cooking breakfast, I told the wife we were going to go shopping and we stayed at the mall all day long. it got to 99 that day...
I hope you can get it working like you want it. I use a large fan also inside and outside to keep air moving. Keep the all doors closed, pull the shades if you don't go with foil type material.
Randy
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Randy "Camp On"
2011 Cougar 327RES
2014 Ford F-350, 6.7L 4X4, CC, SRW
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05-16-2012, 12:14 PM
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#12
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Senior Member
Join Date: Mar 2012
Location: Tucson AZ
Posts: 616
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if I search for insulation on Lowes I will find it? We are already have 100 degrees here in Tucson
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05-17-2012, 06:35 AM
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#14
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Senior Member
Join Date: Apr 2011
Location: Arrey,
Posts: 2,368
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Howdy All;
Quote:
Originally Posted by JRTJH
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I thought I'd read something about using something like the reflectix (stuff mentioned in the quoted link), so I emailed the company...Here's the reply;
We do not recommend it on windows because there can be a heat build up that could cause the glass to crack.
Angelic Millspaugh
Reflectix, Inc.
Customer Service Rep.
Ph: 800-879-3645 ext. 148
Fx: 765-533-2327
"We are all of us stars, and we deserve to twinkle." -- Marilyn Monroe
Thought it warrented a small invistagion.
I think the foil that is refered to is like a window tinting 'film' that is stuck to the glass as a more 'permenant' solutionsuch as;
http://solutions.3m.com/wps/portal/3...ilm/Solutions/
Disclaimer... I don't work for or have any financial tyes to 3M....
hankaye
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Striving for a less complicated life since 1949 ...
Home: 2008 Cougar 278 RKS
T.V.: 2004 F-250 4X4, Level III BulletProofed , Detroit Tru-Track Differential (915A550)
Dog: 2006 Border Collie (Rascal) aka Maximum fur dispersal unit. (08/04/2006 - 12/16/2017) RIP.
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05-17-2012, 09:16 AM
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#15
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Senior Member
Join Date: Mar 2012
Location: Tucson AZ
Posts: 616
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so you think the foil would be ok, but don't go putting on the film? The windows are already tinted, but I was thinking of doing this too.
Did you all put it on the inside or fasten it to the outside (I know someone that did the outside). If inside then it is under the day/night shades correct?
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05-17-2012, 09:50 AM
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#16
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Senior Member
Join Date: May 2011
Location: Full-timing
Posts: 447
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Quote:
Originally Posted by charlie.leverett
I just purchased the Montana 3750 and here in my area (TX) the temp has been in the 100 + range for some time, it has dual A/C's but i still can only get the inside temp down to mid 80's during the hotter periods of each day, any suggestion or is something wrong?
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The max. input/output temp differential for A/C units is around 15 degrees but that doesn't mean that the max temp differential between inside and out can never be more than 15 degrees. That said, the heat load on an RV on the sun is very high and it is not at all unusual for dual A/C's being unable to keep up in extreme conditions (which virtually defines Texas in the summer ) About all you can do is take some steps as described in the thread, and start up early in the day so you don't get too far behind the curve.
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05-17-2012, 12:37 PM
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#17
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Senior Member
Join Date: May 2012
Location: North Florida
Posts: 1,241
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I plugged those blasted roof vents with the thick foam with the reflectix to prevent heat gain through them. The difference is noticeable. I never camp without some shade available in Florida and my one 13.5k unit does fine with my 32' TT that is poorly insulated.
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2006 Keystone Hornet 29RLS (The Cracker Cabana)
2009 F-250 SuperDuty CC 6.8L/4.10 (The Black Pearl)
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05-17-2012, 02:34 PM
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#18
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Member
Join Date: Apr 2012
Location: Houston, Tx.
Posts: 64
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Yes, I did put it between the day and night shades and the window.
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05-17-2012, 02:40 PM
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#19
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Senior Member
Join Date: Mar 2012
Location: Tucson AZ
Posts: 616
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thanks a bunch. That sure would help the big window in the frontroom.
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05-22-2012, 05:28 AM
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#20
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Senior Member
Join Date: Oct 2010
Location: Austin, TX
Posts: 122
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We had the custom made solar screens that snap on the outside put on. Made a huge difference just standing by the large windows. Normally you could feel the heat radiating in from the glass not it doesn't feel like any temperature difference. Works for homes, works for my RV.
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allentx1
2011 Avalanche 340TG
2010 Ford F-250 6.4l Power Stroke 2wd
Pullrite auto-slider hitch
Austin Texas area
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