OPERATING PRESSURE POINTS “Systems using R-410A operate at higher pressures [than R-22],” points out the Field Diagnostics team. “For example, to produce an evaporating temperature of 40 degrees F and ...

As Figure 1 shows, a given size valve will produce about 20% higher tonnage using R-410A. Looking at it another way, a valve can produce the same tonnage on R-410A with about 83% of the flow area of ...

The Chemours Company CC recently announced that its next-generation refrigerant R-454B, sold as Opteon XL41, has been chosen by Carrier as the primary lower Global Warming Potential (GWP ...

R-410A has a Global Warming Potential (GWP) rating of 2,088, where it's predecessor, R-22 has a GWP rating of 1700. Higher GWP values are at odds with most environmental legislation.

Most air conditioners use one of two types of refrigerant: R-22 or R-410A. I've never paid any attention to this detail while inspecting houses because it didn't make much difference, but that's ...