How to re charge roof ac

sorry to tell you this but you may not be able to find a shop that will recharge your A/C for you. they do not come with factory recharge ports and they will just tell you that you need a new A/C and that's it.

How old is the RV? If it is still under warrant, they might fix it. If not under warranty, then the 4-5 hours of shop time required to find and fix the leak, install fittings to recharge it, and add a couple of hours just in case it comes back in the first 90 days under warranty, then they could have bought a new unit for $700 and cost less.

I did fix a air conditioner for a buddy, and it did take me about 4 hours. I had to go home and get more tools, vacuum pump, torch, copper fittings, freon, and gauges, then come back, solder the leak, install the fittings, evacuate (that takes 1 hour, but you could be doing something else at that time, so normally the shops do not bill for that hour). Recharge with freon, and it was good to go.

If it is a older unit, normally they use R-22 freon. Brand new units, within about 3-4 years old, they would use R-410 Puron.



Good luck!

Fred.

Thanks for the reply. Guess I will have dealer check it out once it's out of storeage.

RV roof top AC units are not able to be charged without brazing in brass fill valves. They are sealed systems. IF you suspect low coolant charge, then IF it leaks you have to find and solder the area that is cracked. There are procedures that can test a RV roof AC unit that will determine if the AC charge is correct. They only hold 1 lb of Freon/410. Doug