The need to electrify our built environment by integrating Air Source Heat Pumps (ASHPs) and Variable Refrigerant Flow (VRF) systems is clear. Most ASHPs and VRF systems in the US use R-410A, a well-known class A1 HFC refrigerant. Previous NESEA sessions by JS Rancourt have discussed HFC refrigerants, including at Building Energy Boston 2020 (click here to view this presentation, and to gain an understanding of the chemistry, safety, codes and standards around HFC refrigerants).
- Understand the safety and regulator challenges in transitioning ASHPs and VRF to lower GWP refrigerants
- Reasonably predict the impacts of the AIM act on ASHPs and VRF, and which direction the EPA may take
- Understand how to compare the predicted lifetime emissions impact of different contributors in buildings
- Select and design systems based on refrigerant type, forthcoming regulations, and desire to reduce emissions and carbon impact.