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 07-01-2015, 02:23 PM   #1
Member
 
Join Date: Jul 2011
Location: Tuscaloosa, AL (Roll Tide!)
Posts: 97
Dash Air Question

I am in the market for a new to me Class A. On most of the ones I have looked at the dash air does not work. Why? If it is the compressor why do so many go bad on a Class A and not on a Class C? If it is the compressor does anyone know the approximate cost to have it replaced?
__________________

__________________
smiybrneyes 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 07-01-2015, 02:27 PM   #2
Senior Member
 
TRNewsom's Avatar
 
Join Date: Aug 2014
Location: AR
Posts: 141
Ours did not work either. We bought used. We had it fixed but I don't remember how much it cost.
__________________

__________________
Jimmy (the driver) & Teresa (the mechanic) Newsom
2016 Forest River Cardinal 3825 FL/2012 Work and Play 18EU
then-2010 Fleetwood Discovery 40X
TRNewsom is offline   Reply With Quote
Old 07-01-2015, 02:34 PM   #3
Senior Member


 
Join Date: May 2013
Location: Chester, VA
Posts: 959
I don't use the dash air, but run my generator and basement air on the road. Keeps whole house cool and makes arrival into campground more comfortable. I did turn on dash air yesterday and found it needs to be recharged. Guess I'll take care of that soon.
__________________
Tom and Gloria 2017 Newmar Ventana 4369, TOAD: 2015 GMC Canyon, Blue Ox Towbar, Baseplate and M&G Braking System
TomandGloria is offline   Reply With Quote
Old 07-01-2015, 03:22 PM   #4
Member
 
Join Date: Feb 2015
Posts: 34
Especially with a DP, there is a lot of hose and connections between the dash and the compressor. Prone to leakage.
__________________
mn.roadking is offline   Reply With Quote
Old 07-01-2015, 04:30 PM   #5
Senior Member
 
Join Date: Dec 2014
Posts: 182
The old use it or lose it, mechanical things are meant to be used bearings need to roll seals dry out.
Probably the seals in the compressor leaked freon out.

This would be more true if you have been looking at older coaches, mine is 2000 and had 73000 miles on it which meant it probably wasn't sitting a lot and air worked but needed some freon.
__________________
Jerry & CP (copilot) Joyce
2000 Coachmen Mirada 340 MBS ( Pretty Penny )
Getting lost every chance we get.
pop-sicle is offline   Reply With Quote
Old 07-01-2015, 04:48 PM   #6
Senior Member
 
530ktm's Avatar
 
Join Date: Dec 2014
Location: Northern Arizona
Posts: 1,391
Quote:
Originally Posted by smiybrneyes View Post
I am in the market for a new to me Class A. On most of the ones I have looked at the dash air does not work. Why? If it is the compressor why do so many go bad on a Class A and not on a Class C? If it is the compressor does anyone know the approximate cost to have it replaced?
My last Adventurer was a 97 and dash worked great. It did need to be recharged once a year before summer but I would always run it monthly or more to keep the seals and oil moving around in there. I think that is the problem with so many units, they sit and do not get used. The cost for a new compressor and other parts can range around $1200 or more.
__________________
2014 Itasca Sunova 33C towing a Jeep JK Wrangler
530ktm is offline   Reply With Quote
Old 07-01-2015, 05:08 PM   #7
Senior Member
 
Join Date: Jul 2014
Posts: 9,909
I think, Class A, AC units are custom built, from aftermarket parts, using clamp on hoses, to the fittings.


There are always more chances of small leaks, then from factory made fittings.


With Class C, ACs, everything come from the chassis builder.


I found this, with aftermarket AC systems, compared to factory AC, in construction equipment.
__________________
twinboat is offline   Reply With Quote
Old 07-01-2015, 05:14 PM   #8
Senior Member
 
Nowabeachbum's Avatar
 
Entegra Owners Club
Join Date: Apr 2011
Location: Naples, FL
Posts: 1,283
Each class C motorhome is built on a van chassis which has the air conditioner built into it. Any given van chassis is designed and built by the manufacturer with the idea that 100,000 or more could be sold in its product cycle. Everything is custom built for the vehicle. The air conditioner and all of its components are designed and tested by environmental engineers using tools like an environmental chamber to work perfectly with each other right down to the location and material used for its hoses and tubing. Again all of its components are custom to that vehicle. A Class A motorhome gets its compressor and condenser from the chassis supplier already mounted when the chassis arrives. The evaporator, dryer and pressure switches come from an air conditioner manufacturer like Evans Products who doesn't even own an environmental chamber. The hoses will be purchased from a hose and fitting supplier. The actual design effort is done by the engineers at the motorhome manufacturer. They will know little about air conditioning and will focus on fit and function, not longevity.
Obviously this is not an ideal situation and leads to lots and lots of opportunities for failure!
There is nothing to gain from replacing a working compressor. More often than not something else has caused a problem.
__________________
Gary & Leigh
2018 Entegra Cornerstone 45Y
2010 Seneca, 2011 & 2014 Anthem,
2017 Cornerstone(All Sold)
Nowabeachbum is offline   Reply With Quote
Old 07-01-2015, 05:26 PM   #9
Senior Member
 
Thor Owners Club
Ford Super Duty Owner
Join Date: Oct 2013
Posts: 758
Being that the dash air is part of the chassis, and not the RV, it's only repaired at a repair shop that performs chassis work.

That means scheduling an appointment at Freightlighter, Ford, Roadmaster, etc... repair shop at pricy labor rates.

Then the fun begins! Unless if it's an obvious leak or main component replacement, diagnosis usually turns into a finger pointing match if it involves air mixers, ducting, electrical controls.

So..... they eventually are neglected and left inoperative.
__________________
BeachDude is offline   Reply With Quote
Old 07-01-2015, 05:45 PM   #10
Junior Member
 
Join Date: Jun 2015
Location: Pinellas Park, FL
Posts: 25
If you are talking about a newer class A with a v10 or even the older EFI 460 or 454 engines, all use a sanden style 134a compressor. 250-300$ new.

Install on either of these three engines is less than an hour book time for the compressor only. That is the very simple part.

Figure in, at minimum, a new dryer~accumulater 40$, expansion valve~orifice tube 15$, pag oil & freon ($varies widely)...usually around 1.75#'s for front engine class A's. If you have the internal signs of "black death", get ready, you'll most likely need a new evaporator & condenser (on top of the above) if they cannot be effectively cleaned. Get's pricy quick. FWIW, ALL modern EFI engines "cycle" the AC compressor clutch even in the dead of winter via the heat/defrost selection on the dash, by design. The purpose of this is to keep the AC compressor's internals lubricated via the pag oil suspended within the freon mix. Some go for years, some fail premature. It is what it is.
__________________
cutlooselily is offline   Reply With Quote
Old 07-01-2015, 06:29 PM   #11
Member
 
Join Date: Jul 2011
Location: Tuscaloosa, AL (Roll Tide!)
Posts: 97
Thanks for the answers.
__________________
smiybrneyes is offline   Reply With Quote
Old 07-01-2015, 08:29 PM   #12
Junior Member
 
Join Date: Jun 2015
Location: Pinellas Park, FL
Posts: 25
Quote:
Originally Posted by Nowabeachbum View Post
Each class C motorhome is built on a van chassis which has the air conditioner built into it. Any given van chassis is designed and built by the manufacturer with the idea that 100,000 or more could be sold in its product cycle. Everything is custom built for the vehicle. The air conditioner and all of its components are designed and tested by environmental engineers using tools like an environmental chamber to work perfectly with each other right down to the location and material used for its hoses and tubing. Again all of its components are custom to that vehicle. A Class A motorhome gets its compressor and condenser from the chassis supplier already mounted when the chassis arrives. The evaporator, dryer and pressure switches come from an air conditioner manufacturer like Evans Products who doesn't even own an environmental chamber. The hoses will be purchased from a hose and fitting supplier. The actual design effort is done by the engineers at the motorhome manufacturer. They will know little about air conditioning and will focus on fit and function, not longevity.
Obviously this is not an ideal situation and leads to lots and lots of opportunities for failure!
There is nothing to gain from replacing a working compressor. More often than not something else has caused a problem.

False. The above doesn't compute.
__________________
cutlooselily is offline   Reply With Quote
Old 07-01-2015, 11:53 PM   #13
Senior Member
 
HeapBigEngin's Avatar
 
Join Date: Apr 2010
Posts: 636
Quote:
Originally Posted by cutlooselily View Post
False. The above doesn't compute.
Care to elaborate a bit more?
__________________
2003 Fleetwood Revolution DP
HeapBigEngin is offline   Reply With Quote
Old 07-01-2015, 11:59 PM   #14
Community Moderator
 
"007"'s Avatar


 
Nor'easters Club
Workhorse Chassis Owner
iRV2 No Limits Club
Join Date: Oct 2004
Posts: 26,803
If its a Evans AC/Heater cooling dash unit the control valve maybe installed incorrectly this link will explain why problem has been around for some time on many different coach's with the Evans AC's.
__________________

__________________
98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans, now in good hands
VISIT the NEWMAR QUICK TIPS & EASYMODS 1 & 2
QUICK TIPS # 3
RV SYSTEMS & APPLIANCES & RECALLS --- TECH INFORMATION
"007" is online now   Reply With Quote
Reply

Tags
dash, dash air



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
Dash Air trabuco Monaco Owner's Forum 29 07-13-2015 05:21 PM
dash air snoopydad Winnebago Industries Owner's Forum 2 06-16-2015 08:35 PM
Dash air out Tom222 Fleetwood Products Owner's Forum 5 06-16-2015 02:09 AM
Air system question Bussinit Monaco Owner's Forum 15 09-12-2014 10:40 AM
Air conditioning question sgtsilverman Winnebago Industries Owner's Forum 8 09-10-2014 08:51 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:56 PM.


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