Jim,

R134A is currently used for the Air Conditioning in most vehicles sold in
the USA after 1996. I have a 1998 GMC Suburban, a 1998 Honda Accord, and
a 1999 Freightliner which all have R134A systems.

OTOH, my home ACs are Carriers, and they are R22 systems. Carrier also makes
a "Puron" system which doesn't use R22.

Later,

Don W.

Jim Woodward wrote:

Marineaire, probably the largest player in air conditioning on boats
over 30 feet, currently uses R22. I've seen R134a in refrigeration
units (the Sea Frost we took around the world was R134a), but not in
air con.

Jim Woodward
www.mvfintry.com