A2L refrigerants

The mildly flammable, lower-global-warming refrigerants (such as R-454B and R-32) that regulation is phasing in to replace older high-GWP ones, changing equipment, handling, and technician training.

The transition is a real cost and a real opportunity: new equipment lines, retrofit rules, and technician certification, so a buyer checks whether the shop is ready for it or exposed by lagging behind.