Free 7 Day Trial RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
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 12-08-2021, 09:38 PM   #1
Senior Member
 
deprived's Avatar
 
Join Date: Nov 2013
Posts: 397
Replace ducted A/C with different model?

I might *MIGHT* have to replace my Coleman Mach 3 DUCTED A/C unit in the bedroom. The one in there now is a 15k BTU unit and it was MAJOR overkill for such a small space - plus very expensive to replace. 13.5 units are a bit cheaper and easier to come by these days in my area.

What i am wondering is whether or not there is anything unique to the air in/out configuration on the bottom of the unit that would make it necessary to replace the old unit with the exact same model or could I go ahead and get the cheaper/lesser unit?

They appear to be more or less the same but what do I know?
__________________
Full -Time On The Road
2008 Tiffin Allegro Open Road 35QBA
6.7L Cummins ISB Tuned to 300HP
deprived 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 12-08-2021, 09:45 PM   #2
Senior Member
 
Join Date: Aug 2007
Posts: 424
Living in Texas I would never downgrade an A/C unit on my coach. My current coach has two 13.5k units and they struggle to cool in the summer sun.
__________________
Lt Keefer
2018 Hurricane 29M
RetiredbutWorking is offline   Reply With Quote
Old 12-08-2021, 10:15 PM   #3
Senior Member
 
deprived's Avatar
 
Join Date: Nov 2013
Posts: 397
Quote:
Originally Posted by RetiredbutWorking View Post
Living in Texas I would never downgrade an A/C unit on my coach. My current coach has two 13.5k units and they struggle to cool in the summer sun.
But are the units interchangeable?
__________________
Full -Time On The Road
2008 Tiffin Allegro Open Road 35QBA
6.7L Cummins ISB Tuned to 300HP
deprived is offline   Reply With Quote
Old 12-08-2021, 10:38 PM   #4
Senior Member
 
Monaco Owners Club
Join Date: Jan 2020
Posts: 1,219
Yes they should be Ö.

Have you ever been in 100+ degree weather with 70+ humidity.

If not donít down size till your sure it will not mater and remember as time goes by the efficiency of the units drop and letís not even talk about how well the new units are made compared to the old.

RV AC units are one of the few items that have not changed over time, I believe, maybe a bit here or there but the 20 year old units on my coach are still cranking away.
__________________
New to us 2000 Monaco executive 40 500hp tag
Biljol is offline   Reply With Quote
Old 12-09-2021, 06:33 AM   #5
Senior Member
 
Join Date: Mar 2019
Posts: 415
Whatever you decide, make sure the roof gasket is the same.

Newmar adds a L shaped gasket in the middle to keep the supply and return ducts separate. Leave that out and the return and supply get mixed.
bentjm is offline   Reply With Quote
Old 12-09-2021, 07:43 AM   #6
Moderator Emeritus
 
TXiceman's Avatar


 
Ford Super Duty Owner
Join Date: Aug 2000
Location: Full Time, TX Home Base
Posts: 20,775
Blog Entries: 21
With the Coleman units, you need to check compatibility of the control board on the unit with the thermostat. I would never downgrade the size of an A/C in an RV. The smaller u nit will fit in the same hole, but you need to check the thermostat and control board.

Ken
__________________
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Travel with one Standard Schnauzer and one small Timneh African Gray Parrot
TXiceman is offline   Reply With Quote
Old 12-09-2021, 09:26 AM   #7
Senior Member
 
bddadles's Avatar
 
Join Date: Feb 2017
Location: Full Timing. When I park I'm home
Posts: 1,302
I agree with the others 'never downsize'. I replaced a Colemen heat pump (model 9014-876) this year (13 years old). The direct replacement for that was back ordered 4 months. A dealer found a model 48004-866 (taller unit). I contacted Airxcel tech service at 574-247-9235 and they told me the direct replacement numbers. They also gave me number for the ceiling shroud and a thermostat in case the new unit was not compatible. Both of these units are bottom mounted and when we put in the new one everything plugged in a worked just fine. So everything inside looks factory and the only difference is the new HP is taller about 4". Cold air this past summer was a good thing. Much more important than appearance.
__________________
2004 Volvo, 2009 smart car
2008 Hitch Hiker Champagne
Full timing January 2010
bddadles is offline   Reply With Quote
Reply

Tags
ace, replace



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
Ducted-Non ducted AC install Question JollyCamper MH-General Discussions & Problems 4 08-14-2019 12:17 PM
A/C: Ducted or non-ducted henboy Travel Trailer Discussion 32 07-27-2017 07:39 AM
Replace ducted air conditioner unit...something I can do? Bad Bolt Class A Motorhome Discussions 25 07-01-2014 12:34 PM
Anybody replace A/C in a fully-ducted system? MSHappyCampers Monaco Owner's Forum 15 05-22-2014 05:19 PM
Air conditioner help - ducted to non ducted 53block RV Systems & Appliances 14 07-29-2013 09:27 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 05:11 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.