Legacy refrigerants like R-410A are being phased out and replaced with a new class called A2Ls. There are more than half a dozen A2L refrigerants, including R-454B and R-32. These refrigerants have a ...

As HVAC contractors gear up for another busy cooling season, many have faced challenges securing R-454B, the low-GWP refrigerant replacing R-410A in new residential and light commercial HVAC systems.

Given sufficient atmospheric moisture and instability, it may cause large cloud clusters and rain. A mean sea level pressure chart shows the direct relationship between isobar spacing (pressure ...