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The R-410A Phaseout: Key Dates & Transition Timeline
January 1, 2025
R-410A Ban for New AC Systems
New Residential & Light Commercial. AC & Heat Pump systems can no longer use R-410A.
Manufacturers must switch to low-GWP refrigerants. (e.g., R-32, R-454B)
2028
Major HFC Supply Cut
HFC Production/import reduced to 40% of baseline.
Possible price increase on R-410A.
2029
R-410A Supply Tightens – Higher Costs Expected
Potential supply restrictions for R-410A servicing.
2036
Final HFC Phaseout – 85% Reduction
Final Phaseout: HFC supply reduced by 85%. R-410A will be scarce and expensive, similiar to R-22 today.
Most systems will use A2L refrigerants (R-32, R-454B)
What is Subcooling & Superheat?
Subcooling is how many degrees the liquid refrigerant is cooled below its saturation temperature before entering the metering device. Superheat is how many degrees the refrigerant vapor is heated above its saturation temperature after leaving the evaporator. Together, they show if the system has the right refrigerant charge and if heat transfer is happening correctly.
Capacitors Explained
Capacitors store and release energy to help motors start and run. In air conditioners, they’re one of the most common parts to fail, often causing a “no cool” call. Knowing how to test and replace them is a must for any technician.
How to Spot a Refrigerant Leak
Low refrigerant can cause weak cooling, frozen coils, or even compressor failure. But refrigerant doesn’t “get used up” — it leaks. This guide explains the signs of a leak, common places to check, and why fixing the leak is more important than just adding more refrigerant.
Homeowner vs Technician Pathways
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