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Old 07-02-2015, 10:03 AM   #15
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Join Date: Jun 2015
Location: Pinellas Park, FL
Posts: 25
While I am new to full time rv living, we've worked on countless class a and c models in the past.

In my opinion, the aftermarket systems, Evans included, in the class a's beat the perceived comfort test/efficiency of any class c Van type chassis we've repaired and road tested. High end truck based class c's however, have very decent factory hvacs.

Assuming all components are properly installed, evacuated and charged, I can only attribute a comparison to available room and/or component sizing and actual heat in the area components are mounted.

There is a lot more room available in a class a chassis and the distance to high heat sources, like engine bay/exhaust typically are greater in a class a application.

I personally have not seen a failure rate one of more than the other down here in Florida in all the years we've been repairing hvac systems.

Like many others have said, no dash air system is going to cool or heat any open interior rv of livable size, that's why many run the generator and house ac's in hot climate driving.

One thing is definite... I'd much rather service a Class A's hvac any day of the week versus the tight confines of a van based Class C. Truck based Class C's fall right in the middle of serviceability.

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Old 07-02-2015, 10:40 AM   #16
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Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 4,548
Originally Posted by 530ktm View Post
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.
Right on. The compressor is not used for months at a time. The seals dry out. My motorhome is a 1998 Pace Arrow. It is 17 years old. The AC has never been serviced. I run the AC everytime I use it. I also turn it on when I run the engine and generator, when it has not been used in a while.

1998 Pace Arrow 35 ft. F53 Ford V10 2012 Honda Civic toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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Old 07-02-2015, 11:05 AM   #17
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Join Date: Oct 2013
Location: Houston
Posts: 1,068
Hope i'm not going to jinx myself but my 2002 is blowing cold and is all original and never been serviced. I only know this because I bought from the original owner and asked. I use it often so hope to get more years out of it.

2002 Newmar Kountry Star 3669
Freightliner 300HP Cummins
Towing 2014 Honda CRV EX-L & 2010 Tundra W/Remco DD
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dash, dash air

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