|
07-05-2011, 06:35 PM
|
#1
|
Senior Member
Join Date: Jun 2011
Location: College Station, Texas
Posts: 2,841
|
Add third A/C to Ventana
Picking up my new 2011 Ventana 3962 in a few days. I live in West Texas and am concerned that the standard 2 x 13.5K AC will not be adequate. I'm sure that this new coach is better insulated than my old 1997 aluminum-skinned Safari, but our weather conditions are brutal (trust me).
I'll be pleasantly surprised if the stock A/C can keep up. Thinking ahead though. Is it possible physically (is there a cutout) to add a third A/C? Looking at the Newmar web page, it seems to be an option on some models.
Is there much to be gained to switch the 2 x 13.5K units for 2 x 15K units?
I'll give a good stress-test in a few days as pickup is in Reno, NV and I'll be driving home through western NV, Vegas, Arizona and New Mexico.
|
|
|
|
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!
|
07-05-2011, 06:49 PM
|
#2
|
Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
|
We have a 2002 Dutch Star 41' with two 13.5 heat pumps. In AZ we stayed at a friends place in Yuma. Usually only needed 1 heat pump going even with all three slides out. BUT we do have the optional roof insulation package, dual pane windows and covers over the slides.
Try yours first, adding an add'l A/C won't be trivial and will require a 50 amp hookup or good EMS. You would need to add add'l roof support and tie into the air ducting in the roof also. The Essex we looked at had three as I remember, but it was 45' long too.
Switching to 15K units gains the 1,500K on both. May or may not be worth it. If the dealer will do a swap and give you a reasonable price it might be worth it but ONLY if you really need it
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
|
|
|
07-05-2011, 07:00 PM
|
#3
|
Senior Member
Tiffin Owners Club
Join Date: Aug 2008
Location: Las Vegas, NV
Posts: 125
|
We have a 2009 Ventana 3936 and live in Las Vegas. We have travelled extensively throughout the West in extremely hot weather upwards of 105-110 degrees and the two AC units have been very adequate. The key is to have them running before it gets too hot. If you turn them off, leave the motorhome, and then return in the middle of the afternoon and turn them on, you can expect them to take a long time to cool the coach down; therefore, we leave at least one AC unit on while we are away for the day. I can really see no reason to even consider adding a 3rd AC unit, if it's even possible given the electrical load it would cause.
__________________
Roger & Fran
US Army (Ret)
2018 Tiffin Wayfarer, 2012 Honda CRV with Invisibrake
|
|
|
07-05-2011, 07:18 PM
|
#4
|
Senior Member
Join Date: Jun 2011
Location: College Station, Texas
Posts: 2,841
|
Encouraging replies - thanks. I am slightly more optimistic.
I know the MH insulation, ducting, slide toppers, MCD shades and dual pane windows are far better than my last two rigs (Safari class A and Keystone Toy Hauler). Both of those rigs had similar AC but poor (or no) ducting, single pane windows, and scanty insulation. My shakedown cruise from Reno --> West TX will be a great test of this as the temps will be above the century mark most of the way.
|
|
|
07-05-2011, 08:03 PM
|
#5
|
Senior Member
Tiffin Owners Club
Join Date: Aug 2008
Location: Las Vegas, NV
Posts: 125
|
There's another issue and that is keeping cool while driving in hot weather. We just returned from a 10-day trip to Great Basin and upon returning to Vegas, the temp was around 100. The dash air on normal with fan speed 2 was more than adequate to stay comfortable. We have driven from Phoenix to Tucson when the temp was 110+ and in that case, we turned on the generator and ran the front AC unit while driving. You should also close the bedroom door to minimize the space to be cooled and keep the shades closed on the sunny side of the coach. Have a good trip!
__________________
Roger & Fran
US Army (Ret)
2018 Tiffin Wayfarer, 2012 Honda CRV with Invisibrake
|
|
|
07-10-2011, 06:50 AM
|
#6
|
Senior Member
Join Date: Jun 2011
Location: College Station, Texas
Posts: 2,841
|
Quote:
Originally Posted by Saber77
There's another issue and that is keeping cool while driving in hot weather. We just returned from a 10-day trip to Great Basin and upon returning to Vegas, the temp was around 100. The dash air on normal with fan speed 2 was more than adequate to stay comfortable. We have driven from Phoenix to Tucson when the temp was 110+ and in that case, we turned on the generator and ran the front AC unit while driving. You should also close the bedroom door to minimize the space to be cooled and keep the shades closed on the sunny side of the coach. Have a good trip!
|
On last leg of journey bringing my baby home. All is well - stayed cool through Death Valley during middle of the afternoon. 400 mile to go today.
__________________
Bob in College Station, TX
2015 Entegra Cornerstone 45K
2012 Jeep Rubicon, 1994 FXLR
|
|
|
07-10-2011, 06:57 PM
|
#7
|
Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
|
Gaining access to your vent system could cause a problem when mounting the third AC. Check pictures.
Newmar roofs and sidewalls and floors have extra insulation in them so cooling or heating will be easier.
Newmar construction.
Welcome to the Newmar forum & Newmar family.
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|