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04-09-2010, 08:03 PM
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#1
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Senior Member
Winnebago Owners Club
Join Date: Oct 2009
Posts: 1,170
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Driving mh in hot weather
I recall a post, from some time ago, regarding driving a MH in hot weather. The article said that rather than operating the generator to run the coach air, the poster installed a curtain just behind the driver and passenger seats to contain the dash air in the cab area. Has anyone done this or do you just run the whole house air and cool the entire coach? Ideas appreciated. Joe
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2008 Itasca Latitude 39W. Cummins ISB 6.7 Turbo 340HP. Allison 6 Speed. Freightliner XCS. Michelin XRV 255/80R 22.5 LRG. SuperSteer MCU. Safe-T-Plus.
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04-09-2010, 08:22 PM
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#2
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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Quote:
Originally Posted by azloafer
Has anyone done this or do you just run the whole house air and cool the entire coach? Ideas appreciated. Joe
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azloafer, We have run in quite a bit of warm weather and we have only needed the dash air. Running in the south west in summer we ran the generator/central AC and the dash air. We have not tried partitioning off the front of the coach. I do expect that your Latitude will be able to pump out enough cooling air from your dash registers.
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04-09-2010, 08:24 PM
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#3
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Senior Member
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,587
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Run the generator and the front house air. I would close the bed room door. I have seen the argument made that this is more efficient than the chassis air. It will most certainly keep you cooler.
Steve O
__________________
Steve Ownby
Full time since 2007
2003 Monaco Signature
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04-09-2010, 08:52 PM
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#4
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Registered User
Monaco Owners Club
Join Date: Oct 2006
Posts: 1,603
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Its good to exercise the generator so what better time to run it as when you need to be cooled down. Do you have pets? They might not appreciate the curtain
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04-09-2010, 08:53 PM
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#5
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Registered User
Monaco Owners Club
Join Date: Oct 2006
Posts: 1,603
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Scratch my last question regarding pets ( I just noticed your profile pic )
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04-09-2010, 08:58 PM
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#6
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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Joe, this link will bring you to thread that OP supplied for us with pictures. Because of age of post pictures no longer exist but the post will give you the information to do the same.
One other thing to check out is your heater/AC unit it maybe pushing a mixture of cold air and heat causing warm air coming out of your vents.
Not knowing what your heater/ac combination is if a EVAN's unit they had control valve problems cutting the heat part of unit. Let us know.
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04-09-2010, 10:45 PM
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#7
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Sep 2008
Location: Shadow Hills,CA 91040
Posts: 3,038
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We have run just the dash air and it works just fine in hot weather but I would not have a problem running the generator and using the house air to make it more comfortable if needed.
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NOTE; I am not responsible for typos, poor grammer or misspelled word !
04 Itasca, Meridian 34H, 330 Cat/2003 CR V Toad
1933 Ford 3 Window,as seen in Bye Bye Birdie
Pvt. E1 Retired, Shadow Hills,Ca.
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04-09-2010, 11:20 PM
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#8
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Senior Member
Vintage RV Owners Club Fleetwood Owners Club
Join Date: Dec 2009
Location: CA
Posts: 1,289
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Quote:
Originally Posted by azloafer
I recall a post, from some time ago, regarding driving a MH in hot weather. The article said that rather than operating the generator to run the coach air, the poster installed a curtain just behind the driver and passenger seats to contain the dash air in the cab area. Has anyone done this or do you just run the whole house air and cool the entire coach? Ideas appreciated. Joe
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I saw that idea on this site, I tried it and it worked great for the a/c and the dash heater.
J
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04-11-2010, 01:52 AM
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#9
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Senior Member
Winnebago Owners Club
Join Date: Oct 2009
Posts: 1,170
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Quote:
Originally Posted by Chuck 1935
We have run just the dash air and it works just fine in hot weather but I would not have a problem running the generator and using the house air to make it more comfortable if needed.
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I wonder how much fuel per hour is used by the 6,000 watt gen? Shouldn't be too much. Joe
__________________
2008 Itasca Latitude 39W. Cummins ISB 6.7 Turbo 340HP. Allison 6 Speed. Freightliner XCS. Michelin XRV 255/80R 22.5 LRG. SuperSteer MCU. Safe-T-Plus.
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04-11-2010, 02:48 AM
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#10
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Senior Member
Workhorse Chassis Owner
Join Date: Dec 2007
Location: Surprise Arizona
Posts: 1,994
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Quote:
Originally Posted by azloafer
I wonder how much fuel per hour is used by the 6,000 watt gen? Shouldn't be too much. Joe
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According to my Onan manual its about .8 gal. per hr. under full load. When it gets over 90 we normally shut off the cab refer, turn on the genset and run both house ac's.
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Harold & Linda
2009 CT coachworks siena 35V
W22 Workhorse 8.1L. Explorer Sport toad,
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04-11-2010, 09:37 AM
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#11
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Senior Member
Monaco Owners Club
Join Date: Oct 2007
Location: Washington State
Posts: 229
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We often run both dash and house air when traveling in 90+ degree weather. The thought being is having the coach cool when we arrive at our destination, not to mention traveling in comfort (why not?). Sometimes it's difficult to bring temps down once everything in the coach is hot. By traveling with both on we have a comfortable ride, arrive with a cool coach and no struggle to balance temps after setting up. Using an avg of .5 gal per hour for the genny is a small trade off.
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Corkey & Dana
2008 HR Endeavor (DIP) PDQ
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04-11-2010, 10:45 AM
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#12
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Senior Member
Vintage RV Owners Club Fleetwood Owners Club
Join Date: Oct 2007
Location: Oliver BC
Posts: 236
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Wer'e just wishing we had 90 degree weather 42 right now wish I was camping instead of spring cleaning
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Bob & Deb in a 1991 Southwind
being pushed by a 1976 MG Midget
Life is good
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04-11-2010, 02:11 PM
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#13
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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I have also heard it said tha tusing house air is more efficient.. I'm not sure that is true as I've never seen actual math to prove it. (I majored in math and like Dr. Epps.. I tend to trust the numbers..> TV show. NUM3ERS)
I do know, however that dash air just don't get the job done in hot weather
JC Whitney.. Used to sell a curtain to seperate the "Cab" from the house on a motor home.. Don't know if they still do. Don't know if I'd want one (or on a van for that matter)
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Home is where I park it!
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04-11-2010, 07:26 PM
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#14
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Moderator Emeritus
Ford Super Duty Owner
Join Date: Aug 2000
Location: Bryan, TX when not traveling.
Posts: 22,948
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When we reached the point that the dash a/c would not keep us cool up front, we cranked up the generator and ran the roof a/c. read the generator manual and see what the fuel usage is at full load and 1/2 load. Ours ran about 1/2 of the time so we averaged close to 1/2 load usage.
Generally most of the motor home generators do not get hours on them, so running them to cool the coach is doing them a favor.
Ken
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Amateur Radio Operator (KE5DFR)|No Longer Full-Time! - 2023 Cougar 22MLS toted by 2022 F150, 3.5L EcoBoost Tow Max FX4 Lariat Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
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