I'm redoing my AC now.

What I know. There is a new product coming from Chrysler, supposedly, and
it will be in new cars next year, and you can recharge with it in past year
autos. I haven't read it but the grapevine says the new refrigerant is
ungodly expensive and can only be installed by certified shops. On the
other hand, there is another refrigerant that is OK to use identified as
HFC152a. This refrigerant comes under exceptions to the rule, but as I
understand it, it has to be done by the vehicle owner. I may be totally
wrong here. Maybe someone else can chime in here. The HFC152a is very
similar in performance to the old R12. Doesn't create near the head
pressure that R134a produces, making it easier on the compressor. It is
also leds dense than either of the others. HFC152a is environmentally safe
in that it doesn't eat the ozone layer. It is propane based but I have
viewed some flammability test and it blew out the flame, whereas the brahe
cleaner tested roar into a much bigger fire.

HFC152a is used as a computer canned air blaster to cleanout dust. You can
get it at Radio Shack, Walmart,  Best Buy, or any office supply place.
Cost at WALMART here in Alabama is $4.95 a can. Just be sure it says on the
can:  difluoroethane, HFC152A cas75-37-6

There are numerous videos on Youtube as to how to use it to recharge and
how it performs. Hope you can find someone who can make the change for you.

John
On Jun 21, 2016 20:44, "Doug Toomey" <drt@uoregon.edu> wrote:

> Would like to convert my AC over to new refrigerant. On road toward
> Yellowstone and then eastward. Can anyone recommend a shop to do it in
> Idaho, Wyoming or to east?
>
> Thank you. Just one of those things that did not get done before leaving!