Thread Tools Display Modes
Old 08-14-2014, 07:43 PM   #1
Senior Member
Join Date: Jul 2014
Location: Ontario Canada
Posts: 101
Explain pre-wired for second A/C

Spent a little time searching trying to inform myself but didn't really figure it all out.

My trailer is pre-wired for a second a/c in the front bedroom. There is a breaker for second a/c and the block off plate in the roof by the bedroom roof vent.

Question is this, would a second A/C be installed into the ducted system running off the therm o stat with the other unit. Both run together to increase air flow in the ducts.
Or would it be like an older trailer A/C where you operate the controls from the a/c unit on the roof itself?

First trailer with this option so learning.

2015 GMC Sierra 3500HD DRW
2014 XLR Hyper Lite 30HFS5

Yamaha G9 Golf Cart
2010 Harley FLHX with lots of mods
bowtie_guy is offline   Reply With Quote
Old 08-14-2014, 08:02 PM   #2
Junior Member
Join Date: Sep 2012
Posts: 4
It would work like the old units. Air coming out of the a/c unit only with controls on the unit unless you wanted to wire in a thermostat

gschick is offline   Reply With Quote
Old 08-14-2014, 08:09 PM   #3
Phat Phrog Stunt Team
TURBS's Avatar
Join Date: Aug 2011
Location: Iowa
Posts: 34,205
Normally there's a second thermostat mounted in the same room as the second a/c.
Normally you'll get a ducted a/c and they both work together that way.


TURBS is offline   Reply With Quote
Old 08-14-2014, 08:34 PM   #4
Phat Phrog Stunt Crew
elind's Avatar
Join Date: May 2012
Location: Upper Penisula Michigan / Arizona
Posts: 2,144
Just had a second a/c installed on my 5er. When my was pre-wired it had
it's own breaker and a thermostat in the bedroom. The a/c is direct vent into the bedroom that sits on the 14x14 roof vent. It doesn't connect to the air ducts. The RV will have a 50 amp service to power the two a/c's.
Ed & Ruthann / Toby and Tucker
2014 GMC Sierra Crewcab 2500 Duramax
2014 Wildcat 327ck
2015 129 nites
2016 40 nites
elind is offline   Reply With Quote
Old 08-15-2014, 03:05 PM   #5
Senior Member
Join Date: Apr 2011
Location: Splendora, Texas
Posts: 1,112
My second AC in the bedroom was pre-wired for the unit only and it is a13,500 BTU stand alone unit, not ducked or connected to the duck work for the 15,00 BTU unit in the living/kitchen area which is ducted.
whj77372 is offline   Reply With Quote
Old 08-15-2014, 03:34 PM   #6
Senior Member
Witch Doctor's Avatar
Join Date: Feb 2012
Location: Clarksville Va.
Posts: 6,846
All these answers are correct depending on unit model. Your sales person might know if it is joint ducted or just a bottom drop. Joint ducting would be preferred in IMO.
Rockwood #8289 WS 2012
F250 6.0 / Husky 16k
With 4 point leveling system
Witch Doctor is offline   Reply With Quote
Old 08-15-2014, 04:55 PM   #7
Senior Member
jtstromsburg's Avatar
Join Date: Jul 2011
Location: Stromsburg, Nebraska
Posts: 1,579
Like turbs said, on my sabre, I added a second 15k btu ac unit and it is ducted. There was a wall mounted stat from the factory, along with 120v power near the original vent

Joel and Teresa
2016 Sabre 34TBOK
2006 GMC 3500 CC LB DRW 4X4
jtstromsburg is offline   Reply With Quote

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Virginia Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

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 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 01:19 AM.