Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 08-06-2017, 09:47 AM   #1
Member
 
Join Date: Jul 2017
Posts: 30
Cooling the back of the RV while driving

When driving in these 90-100+ days, I pretty much have to run the generator full time to run the AC in the back to keep the MIL and kids cool. Not to mention the wine.

Is there a way to keep it cool back there without running the generator? We close all of the blinds, have tried the ceiling vent fan, crank the front AC up to 4 and point it straight down the middle.

I was thinking of getting driver/passenger fans, but those only would seem to benefit those up front. We tried a fan in the back and it helps if it isn't direct sun, or at about 85 degrees, but MIL starts complaining after that.
__________________

__________________
rayzor is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 08-06-2017, 09:53 AM   #2
Senior Member
 
Mr_D's Avatar
 
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 27,168
My rig has a second OTR air con unit under the bed. Not something very many MH's have.
Running the generator and air cons is accepted practice for most people.
__________________

__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 08-06-2017, 09:59 AM   #3
Senior Member
 
JohnBoyToo's Avatar


 
Monaco Owners Club
Join Date: May 2012
Location: DFW, Tex-US
Posts: 4,457
Don't even give it a second thought about running the generator !!!
It NEEDS to be run about monthly anyway to keep it from rusting up

and why sacrifice your (or your passengers) comfort for a 1/2 gallon of fuel per hour?

what we typically do, is once it's cool, we turn off the dash air, makes for a quieter ride and we can hear the audible book betta !

and even further, we set the roof air to a comfortable temp and turn the genny on and off with the dash switch for remote control since the DW is ALWAYS colder than me and so I got one of these too for me.
__________________
'11 Monaco Diplomat 43DFT RR10R pushed by a '14 Jeep Wrangler JKU. History.. 5'ers: 13 Redwood 38gk, 11 MVP Destiny, Open Range TT, popups, vans, tents...
JohnBoyToo is online now   Reply With Quote
Old 08-06-2017, 10:16 AM   #4
Senior Member
 
JFXG's Avatar
 
Newmar Owners Club
Freightliner Owners Club
Join Date: May 2012
Location: Today? Bellingham, Massachusetts
Posts: 3,552
Cooling the back of the RV while driving

I have read more than a couple of threads and articles arguing that it is actually more fuel efficient to run the generator with rooftop a/c units, rather than the dash a/c unit. The argument posed is that the engine mounted compressor supporting the dash a/c saps more HP- and thus fuel- from the engine than the generator burns to support the a/c units.
__________________
John & Diane, Fulltimers. RVM103 NHSO
On the road since June '12 with Lincoln, the guard cat.
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element
JFXG is offline   Reply With Quote
Old 08-06-2017, 10:21 AM   #5
Senior Member
 
Monaco Owners Club
Join Date: Apr 2009
Location: Where ever we stop
Posts: 508
When traveling if the outside temp is above 70DEG, our generator is always running and the roof top AC's are on. We want to be comfortable when we arrive. If you can afford the motorhome, you can afford to run the generator.
__________________
Chet
Monaco 2004 Signature 45' Castle IV Detroit 60
Towing 2015 Jeep Grand Cherokee diesel
super_rep is offline   Reply With Quote
Old 08-06-2017, 03:09 PM   #6
Senior Member
 
GoneToTheDog's Avatar
 
Join Date: Sep 2016
Location: Mesa, Arizona
Posts: 245
Quote:
Originally Posted by super_rep View Post
When traveling if the outside temp is above 70DEG, our generator is always running and the roof top AC's are on. We want to be comfortable when we arrive. If you can afford the motorhome, you can afford to run the generator.
I totally agree.
__________________
2017 Winnebago Spirit 25b
Nothing fancy about it.
Exactly what we wanted.
GoneToTheDog is online now   Reply With Quote
Old 08-06-2017, 03:27 PM   #7
Senior Member
 
TripleGGG's Avatar


 
Winnebago Owners Club
Appalachian Campers
Ford Super Duty Owner
Join Date: Mar 2017
Location: Knoxville, TN
Posts: 515
Quote:
Originally Posted by super_rep View Post
When traveling if the outside temp is above 70DEG, our generator is always running and the roof top AC's are on. We want to be comfortable when we arrive. If you can afford the motorhome, you can afford to run the generator.
X2 for us as well. Actually 68 on the temperature setting.
__________________
Greg, Gina & Ginger the rescue dog
2002 Winnebago Sightseer 30B, Ford Chassis V10, TOAD 2004 Buick Rendevous
Knoxville TN / FMCA - F467719
TripleGGG is offline   Reply With Quote
Old 08-06-2017, 03:32 PM   #8
Senior Member
 
nctox's Avatar
 
Tiffin Owners Club
Join Date: Jun 2013
Location: Western NC
Posts: 381
Hey! Let's get our priorities straight here. That wine has to stay cool.
Run the genny.
__________________
Seeing this country from ground level.

2016 Allegro Bus 40AP
nctox is offline   Reply With Quote
Old 08-06-2017, 03:38 PM   #9
Member
 
Join Date: Oct 2016
Posts: 79
I have considered adding a rear air setup or maybe an invertor big enough to run the roof ac off the house batteries for a while. Our propane generator means that on long driving trips with boondock destinations (rally races usually), we challenge our propane tank size after a while. The genny is so lightly loaded nearly all the time that it seems like an invertor and high capacity dc charger (from Genny) might be the better way to go in general anyway. I've considered adding a second alternator just for keeping up with the house batteries in such a situation.
__________________
LPerry is offline   Reply With Quote
Old 08-06-2017, 04:03 PM   #10
Senior Member
 
Join Date: Dec 2013
Location: Lake Havasu City, AZ & Plover, WI
Posts: 1,514
Start the morning with the genny running and the AC's on. Keep the interior cool all day. Once you let the furniture and rest of the interior warm up, it takes that much longer to cool everything down. We have found that by running all three roof ACs and turning the dash AC off, we can keep the entire coach uniformly cool by running the windshield fans to circulate. The roof ACs cycle on and off during the day.
__________________
2013 43 QGP Allegro Bus
Crasher is online now   Reply With Quote
Old 08-06-2017, 04:08 PM   #11
Senior Member
 
Mr_D's Avatar
 
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 27,168
Quote:
Originally Posted by LPerry View Post
I have considered adding a rear air setup or maybe an invertor big enough to run the roof ac off the house batteries for a while. Our propane generator means that on long driving trips with boondock destinations (rally races usually), we challenge our propane tank size after a while. The genny is so lightly loaded nearly all the time that it seems like an invertor and high capacity dc charger (from Genny) might be the better way to go in general anyway. I've considered adding a second alternator just for keeping up with the house batteries in such a situation.
A second 3000 watt inverter, a larger alternator and two more 8D AGM's to run the front heat pump OTR was a listed option for my rig but it doesn't have it. Would be nice to have though.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 08-06-2017, 04:10 PM   #12
Senior Member
 
Mr_D's Avatar
 
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 27,168
Quote:
Originally Posted by JFXG View Post
I have read more than a couple of threads and articles arguing that it is actually more fuel efficient to run the generator with rooftop a/c units, rather than the dash a/c unit. The argument posed is that the engine mounted compressor supporting the dash a/c saps more HP- and thus fuel- from the engine than the generator burns to support the a/c units.
I've seen the same thing but no definitive testing that I've found.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 08-06-2017, 04:36 PM   #13
Senior Member
 
Join Date: Jan 2015
Posts: 579
We live in central Texas and go to Corpus Christi fishing 4 times a year. We have found the fuel economy is about the same running the dash air or running the generator and the air conditioners. As a previous poster said keeping the coach cool is a lot easier the cooling it down when it gets hot. We start the generator when we leave home and shut it off at the campground when we get back on shore power. Didn't we spend all that money on these rigs to be comfortable? I did.
__________________
redcolorado is offline   Reply With Quote
Old 08-06-2017, 07:13 PM   #14
Senior Member
 
Kro1957's Avatar
 
Thor Owners Club
Join Date: Jun 2012
Location: Mitchell South Dakota
Posts: 1,047
Blog Entries: 2
Definitely run that Gen Set on Hot days

Since we have had the Motorhome we just ran into our first bout of hot weather on the road. It was in the 100's and we had to travel back to South Dakota mid July. Not knowing the right/wrong, I really did not care in that extreme heat, I had that Onan run with both AC's on High. Kept the coach nice and comfortable our entire trip and I did not notice hardly a difference at all in any diesel mileage. The only thing was we racked up some more hours on the Generator. Here's to life in the RV..... lovin it...
__________________

__________________
06 King of the Road 37RLQS
06 Coachman Cross Country 5.9L 300HP 382 DS
03 Jeep Wrangler, 4.0L James, Trina, SMSgt, USAF Ret
Kro1957 is offline   Reply With Quote
Reply

Tags
cooling



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Roof ACs Not Cooling While Driving - Work GREAT Parked f15epilot RV Systems & Appliances 35 10-22-2016 07:54 AM
Is this just our RV? No sound on TV while running Generator while driving? vanbuskirk Technology: Internet, TV, Satellite, Cell Phones, etc. 5 09-06-2016 01:52 PM
American Coach: A/C Cooling Fan / Radiator / Cooling GlennLever Fleetwood Products Owner's Forum 11 09-23-2014 03:37 PM
Norcold loses cooling while driving jkjourney RV Systems & Appliances 1 05-14-2013 05:00 PM
Norcold 1201IRIM 4 door unit not cooling while traveling SteveG RV Systems & Appliances 23 09-16-2009 03:16 AM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:03 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.