Specs, safety, and regulations
R-454B, R-32 handling requirements for the A2L transition
Legacy residential/commercial AC, heat pumps, refrigeration
Residential/light commercial AC, heat pumps (current standard)
NEW residential AC and heat pumps (2025+), light commercial
Mini-splits, VRF systems (Daikin, Fujitsu, Mitsubishi, Gree)
Chillers, medium-temp refrigeration, automotive AC, centrifugal compressors
Commercial refrigeration, supermarket cases, walk-in coolers/freezers
Commercial AC, some R-22 retrofit applications
Small self-contained units, reach-in coolers, vending machines, small splits (charge limit ~150g)