States look to reduce air 'super pollutants'
With recent rule revisions, Western states continue to lead the nation in refrigerant regulation. California Air Resources Board (CARB) and Washington State Department of Ecology recent actions put in place stronger limits on hydrofluorocarbons (HFCs). HFCs are often called “super pollutants” because of their extremely high Global Warming Potential (GWP). On average, HFCs are thousands of times more effective at trapping heat in the earth’s atmosphere than carbon dioxide.
Taking a closer look at the new CARB rule, you find it contains three main areas of focus:
- Limiting refrigerants not by name but by GWP. The new limits affect commercial and industrial, stationary refrigeration units, such as those used by large grocery stores, as well as commercial and residential air conditioning units.
- Placing responsibility for refrigerant recycling program compliance with manufacturers. This is the first rule in the nation to take this approach.
- Establishing two specific variances (impossibility and extraordinary circumstances) and the process by which these variances can be approved.
Starting as early as 2022, new commercial cooling units in California will be required to use refrigerants with lower GWP. Compliance for most home air conditioning equipment begins in 2025.





















































