A2Ls Gain Momentum in Supermarket Refrigeration

This is a story about grocery store refrigeration, not home equipment, but it points to where refrigerants are headed more broadly. Supermarkets are required to phase out older refrigerants with high global warming potential (HFCs) under a federal rule called the AIM Act. The industry is already 40% through that phasedown, with the next big step in 2029. One option gaining ground is A2L refrigerants, which behave much like current systems but have a lower climate impact. Retailers like them because they don't require the specialized training or higher costs that come with CO2-based systems, which can also struggle to run efficiently in hot climates.

A wrinkle: the EPA recently dropped its installation deadline for R-410A (a common refrigerant) and pushed the deadline for supermarket refrigeration systems out to 2032. Some in the industry warn that shouldn't be read as a reason to wait, since the long-term shift to low-GWP refrigerants isn't going away.

None of this changes anything for a homeowner's furnace, air conditioner, or heat pump right away, since those follow separate rules and timelines. But it's a signal that refrigerants across the HVAC and refrigeration world are moving in the same direction, toward lower-emission options. If you're planning a system replacement in the coming years, it's worth knowing that refrigerant rules are shifting industry-wide, so the equipment on the market will keep changing too.