What are the main drivers behind the phase-down of HFCs in HVAC systems?

The primary drivers behind the phase-down of HFCs are their high global warming potential (GWP) and the resulting international agreements to reduce their use. The Kigali Amendment to the Montreal Protocol, for instance, aims to reduce HFC consumption by 80-85% over the next three decades. Additionally, growing concerns about climate change and the need to reduce greenhouse gas emissions are pushing the HVAC industry to adopt more environmentally friendly refrigerant technologies.