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Old 07-11-2016, 01:51 PM   #1
2 Rivet Member
cdufault's Avatar
1977 28' Argosy 28
Mission Viejo , California
Join Date: Nov 2015
Posts: 74
How old is your roof top air conditioner?

What the maximum life expectancy is for a roof top air conditioner? The A/C in my 1977 Argosy 28 MH blows about 20 degrees cooler than outside temp. My local Camping World said a new A/C wouldn't cool much better (but I suspect replacing my AC was too much work.)

As far as I can tell I have an original roof top air conditioner on my 1977 Argosy 28 MH. The shroud has the same beltline trim as the motorhome, and the inside roof control matches the ceiling finish.

The shroud is still in tact and doesn't seem too brittle although I've painted it to provide some sun protection.

I'm just curious if there are older air-conditioners still in the service among air forum members.

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Old 07-11-2016, 02:03 PM   #2
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2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,717
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Mine is only 10. My old SOB was 17. A 20 - 22 degree drop from INTAKE air is normal A/C guideline. IOW, measure the temp at the air intake by the filter, then take and insert your thermometer in the AC outlet grille.


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Old 07-11-2016, 02:38 PM   #3
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1978 25' Tradewind
Metro Phoenix , Arizona
Join Date: Jun 2003
Posts: 1,428
My Armstrong is original to the trailer - 38 years. It has a new fiberglass shroud, and a crack in the refrigerant tubing was repaired.

These older units are pretty sturdy, and will hang in there for you very well.
"Between what matters and what seems to matter, how should the world we know judge wisely?" - E.C. Bentley, Trent's Last Case
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Old 07-11-2016, 02:54 PM   #4
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1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,219
Images: 2
Blog Entries: 5
The 42 year old Armstrong on my Argosy is still running. If it fails while I own the coach I will have it repaired if I can't do it myself.
Knowledge: "A gift to be shared. A treasure to receive."
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Old 07-11-2016, 03:30 PM   #5
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1976 25' Caravanner
Salt Lake City , Utah
Join Date: Oct 2013
Posts: 374
I just posted copies of the Armstrong manuals at the following thread. They have sections on troubleshooting, which might be helpful.

Mine still works great. I just put a new shroud on it.
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Old 07-11-2016, 03:37 PM   #6
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1977 23' Safari
Niagara on the Lake , Ontario
Join Date: Aug 2011
Posts: 658
Images: 3
39 years and still going
1977 Safari Land Yacht
2005 Toyota Tundra SR5
2010 Ford Flex Ecoboost
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Old 07-11-2016, 04:18 PM   #7
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2006 23' Safari SE
Biloxi , Mississippi
Join Date: Nov 2011
Posts: 8,278
Images: 33
Original was 8 years old when replaced by Jackson Center due to recall. New unit just over 2 years old.

Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
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Old 07-11-2016, 05:53 PM   #8
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1972 31' Sovereign
1975 31' Excella 500
Currently Looking...
Benton , Arkansas
Join Date: Mar 2013
Posts: 5,047
Images: 11
44 years.

Using several tricks, it is 104 outside, and 74 inside right now.

Not bad for a 31 footer with an 11,000 btu unit.

Gradiens super tenui glacie.
The fact that I am opinionated does not presuppose that I am wrong......

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Old 07-11-2016, 05:57 PM   #9
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1988 25' Excella
1987 32' Excella
Knoxville , Tennessee
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One is 1.5 years old. The other is 9 years old. The 1987 Armstrong that I just replaced had a rusted fan and shaft on the outside of the unit. I had the first one replaced while it was still working before I found that people like the old ones better than the new ones. But I was headed to Alaska via a very hot spell in the southwest first and opted for a new one.
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Old 07-11-2016, 07:02 PM   #10
Well Preserved

1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,324
The new air conditioner dates from 1992. The original worked great, but the sheet metal pan had rusted so badly I had to use an umbrella inside the trailer.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
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Old 07-12-2016, 10:59 AM   #11
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2013 30' Classic
Greenwood , Mississippi
Join Date: Oct 2012
Posts: 12,103
I know a guy with a 2008 or so Carriage Cameo fifth wheel.
He wanted a new a/c unit, but the RV serviced guy refused to replace it because he said there was nothing wrong with it.
My buddy is so afraid it will quit on a trip.
A new one might quit on a trip.
That is the reason for a 50 amp trailer and 2 units- redundancy-
If one quits, you still got the other-
His bedroom unit was installed new last summer-
He might be a bit OCD...
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
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Old 07-12-2016, 11:30 AM   #12
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1969 23' Safari
Palmer Lake , Colorado
Join Date: Oct 2014
Posts: 553
the original Armstrong on my 69 quit working and who knows when it stopped working. It actually never worked very well (my family has owned the trailer since new) it leaked condensate into the trailer, and it was very noisy. When I brought it to Colorado after the trailer being unused for 35+ years, A/C replacement was not on the list of immediate items of attention but was on the 2nd list of "get to when we can" items. We evaluated having it rebuilt but decided to go with a new, quieter, and more energy efficient unit. It turned out the cost of rebuild was about the same or slightly more than installing a new one including the metal work and reinforcement involved to replace the Armstrong unit. We went with a new one with a black shroud and an internal pump that actively pumps out the condensate upon compressor start and it is much quieter while running and boy does it work! We are very happy with the choice
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Old 07-12-2016, 11:31 AM   #13
1972 21' LY Globetrotter
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1972 21' Globetrotter
Pico Rivera , California
Join Date: Dec 2009
Posts: 13
The original a/c on our 1972 is still working great. Not used often, since we love beach weather. Installed a new cover a few years ago.
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Old 07-12-2016, 11:54 AM   #14
2 Rivet Member
1980 24' Caravelle
vallejo , California
Join Date: May 2016
Posts: 68

1980 carevalle, coleman ac,still running strong.

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