I talked to a guy the other day that does AC work on RV's and he's recommending a new unit. He says it sounds like the fan motor and he could replace it but since the compressor is over 10 years old, it could go next.The unit is $650 according to him, although I found it online on one site that I know nothing about for $458. He wants about $950 the unit and installation plus tax. Is this something that's easy to do? I have no experience with working on RV's or AC's.

Lots of videos on line (google: "replacing an rv ac").How handy are you?Is your existing ac ducted? This will make it more difficult.You will probably need some help getting the new unit up on the roof.I probably wouldn't tackle it, but I'm sure many members here on the Forum have done so successfully.Good luck with it.

If you are considering replacing the whole unit as DIY. Then a motor replacement would be a piece of cake comparatively speaking.The hardest part of replacing the whole unit would be getting the replacement on the roof without a hernia.BTW my coleman A/C is 27 years old

I'm pretty handy but not sure I want to tackle this job. I'm worried more about leaks later than getting the unit installed. It's a roof air that's non-ducted.downtheroad wrote:Lots of videos on line (google: "replacing an rv ac").How handy are you?Is your existing ac ducted? This will make it more difficult.You will probably need some help getting the new unit up on the roof.I probably wouldn't tackle it, but I'm sure many members here on the Forum have done so successfully.Good luck with it.

That's good to know. I got the feeling that this guy was trying to score a big sell rather than just a repair job. I've heard of some of the AC's running more than the average 5 years, which is what he told me. He said it was rare to see one running 10 years.darsben1 wrote:If you are considering replacing the whole unit as DIY. Then a motor replacement would be a piece of cake comparatively speaking.The hardest part of replacing the whole unit would be getting the replacement on the roof without a hernia.BTW my coleman A/C is 27 years old

Replacing rooftop A/C units is one of the most overrated (consequently the costliest) functions RV repairman do, considering the time it takes.I'm not a RV repairman but have replaced a couple of my own, and helped others do their's. Very simple; 4 bolts connect top to bottom; 1 electrical plug to join top and bottom; that's it. It may be worth it to pay another $65. or so and replace the lower panel.Regarding getting old one down and new one up; a new Mach III weighs 110 lbs.I'm lucky, having a Kubota with front loader makes that job a snap. However,I have used a long extension ladder, set bottom far as I can from the RV, and gradually slide the new one up the ladder (of course no problem getting old one down................) Main area of concern, is making sure the flange around the hole in top of you RV is very, very clean. Then just follow the directions given for mounting the foam rubber gasket, and by all means do not over-tighten it.To make the RV owner feel he is getting his money's worth, a RV Tech. might fool around and take an hour +, but if he is any good he can replace upper/lower in 30 to 45 minutes.Once you replace a unit you will wonder why RV techs charge so much.Good luck; DIY and save a bundle ! ! !

Coleman Mach 3 AC replacement | Good Sam Community

roadjunkie
Explorer
May 22, 2017
I'm pretty handy but not sure I want to tackle this job. I'm worried more about leaks later than getting the unit installed. It's a roof air that's non-ducted.

downtheroad wrote:
Lots of videos on line (google: "replacing an rv ac").

How handy are you?
Is your existing ac ducted? This will make it more difficult.
You will probably need some help getting the new unit up on the roof.

I probably wouldn't tackle it, but I'm sure many members here on the Forum have done so successfully.

Good luck with it.
darsben1
Explorer
May 22, 2017
If you are considering replacing the whole unit as DIY. Then a motor replacement would be a piece of cake comparatively speaking.
The hardest part of replacing the whole unit would be getting the replacement on the roof without a hernia.
BTW my coleman A/C is 27 years old
downtheroad
Explorer
May 22, 2017
Lots of videos on line (google: "replacing an rv ac").

How handy are you?
Is your existing ac ducted? This will make it more difficult.
You will probably need some help getting the new unit up on the roof.

I probably wouldn't tackle it, but I'm sure many members here on the Forum have done so successfully.

Good luck with it.

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