A2L Refrigerants
The 'mildly flammable' safety class covering R-454B and R-32. Ignition requires concentrations and energy normal service rarely produces, but the class drives new handling rules: A2L-rated recovery equipment, dedicated cylinders with left-hand threads, and leak-sensor provisions in equipment.
Parts behind the term
Whatever this term touches, it's on a shelf in Asheville with same-day pickup.