Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > GENERAL DISCUSSIONS > General Discussions about our Montanas
Click Here to Login

Thread Tools Display Modes
Old 11-18-2019, 10:41 AM   #1
Established Member
Join Date: Aug 2019
Location: Riverdale
Posts: 11
M.O.C. #24632
Bedroom a/c

Our Montana was built for Montana (the state), which was where we bought it, and has all the cold weather needs. We have the 10th Anniversary (340rlq) Big Sky.

We live in CA (for now) and need a second A/C unit for the bedroom.

A search in Amazon.com tells us there are a variety of units and prices within the units. Our unit appears to be prewired.

If anyone has already purchased and installed said A/C, will you pass on your knowledge?
JanCouch is offline   Reply With Quote
Old 11-18-2019, 01:54 PM   #2
Montana Master
prndl's Avatar
Join Date: Apr 2017
Location: 1000 oaks
Posts: 758
M.O.C. #19630
I installed the bedroom A/C myself. Get a low profile unit for clearance. Get a unit with the controls located in the inside housing. Running a wire to a new thermostat is for me a waste of effort. We use our front A/C when it is really hot and we need to cool the whole trailer down. The front one runs full blast until we don't need it anymore. No need for a thermostat for that. I installed a MACH 8 in my old 5th wheel two years ago and it sounded like there was a Cessna on the roof from the exchanger fan. That is a common problem for the MACH.
13.5BTU would be sufficient. I did not connect the front unit to the ducting. I blocked off the entire plenum area between the ceiling and roof during the install.
2011 2955RL Reese Sidewinder 5th Airborne
2014 RAM 2500 CD Demco Recon Hitch
4X4 Crew Cab/Short Bed
prndl is offline   Reply With Quote
Old 11-18-2019, 06:39 PM   #3
Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 5,599
M.O.C. #6433
I had a 13.5 k low profile air conditioner installed by Camping World. Typically we only use it when we first arrive at a new destination after a long drive on a hot day. Running both units til bedtime cools the trailer enough that we shut off the bedroom unit before going to bed and never start it again at that location. Even in really hot weather. But we are only 34’.
Ours is a stand alone unit not connected to the wall thermostat.
Bill & Patricia

2007 3075RL
2012 F350 SRW CC LB FX4 6.7
BB_TX is offline   Reply With Quote
Old 11-18-2019, 07:10 PM   #4
Montana Master
DQDick's Avatar
Join Date: Jun 2011
Location: Wilsey
Posts: 17,321
M.O.C. #11455
When we added the third AC to our rig the thermostat cable and the electrical connections were already in the ceiling and the other end of the thermostat cable was behind the fan control when I took it off. I used a low profile Dometic just to make sure the cable etc was compatible, but it should work with any unit.
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
2017 3500 Dodge Maxi DRW 4X4, Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, etc.
DQDick is online now   Reply With Quote
Old 11-19-2019, 08:04 AM   #5
Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,091
M.O.C. #12156
Installed low profile Dometic, no issues
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
1retired06 is offline   Reply With Quote
Old 11-19-2019, 12:36 PM   #6
Dave W
Montana Master
Dave W's Avatar
Join Date: Jul 2014
Location: Upstate NY
Posts: 1,237
M.O.C. #14547
Installed the 13.5Btu low profile Dometic Penguin myself on the HC. This has the cotrols built into the inside air box. I also added the 5000Btu heat strip. This a/c works very well and even non-ducted will do a good job of cooling the living area as well since cool air 'falls'.

If your 5er is pre wired, super simple job. If not, you need to provide a dedicated 20 amp service
Dave W
Traveling with my DW Susan, a couple poodlepups and our 2014 Montana High Country 343RL, being towed by a 6.7 2011 F250 CCLB using a B&W hitch and OEM puck system
Dave W is offline   Reply With Quote

a/c bedroom

Thread Tools
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
Forum Jump

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 08:04 AM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.