HFOs contribute to phasedown of HFCs, in line with Kigali Amendment and U.S. AIM Act

The White House Climate Task Force has set an ambitious goal to achieve a net-zero emissions economy by 2050. With sustainability at the heart of everything Honeywell does, we enthusiastically support this target. And to achieve it, we know that reducing emissions from hydrofluorocarbons (HFCs) and other industrial refrigerants by transitioning to low global warming potential (low-GWP) HFOs is of paramount importance - especially as U.S. HFC users look to prepare for the eminent drop in total U.S. HFC supply to 60% of baseline in 2024. (Image Source: U.S. EPA)

Globally, the HFC phasedown is already underway as a direct result of the Kigali Amendment to the Montreal Protocol. Honeywell has innovated a critical tool to support successful Kigali implementation through our Solstice HFO technology, which offers both an energy-efficient and lower-GWP alternative to HFCs. 

The industry is turning to HFOs not only to help meet current and proposed regulations that play a major role in the increasing demand for low-GWP alternatives, but also to meet their own sustainability goals. Honeywell is supporting several key industries by ensuring our customers have the HFO solutions that meet their needs available now.

HFOs have been heavily studied and are rigorously regulated, pursuant the U.S. Clean Air Act, other U.S. Environmental Protection Agency (EPA) programs including TSCA and FIFRA, and California CARB. To date, more than 75 third-party studies, including Good Laboratory Practice-compliant OECD in vitro, acute and chronic toxicology reports, and environmental properties research that evaluates persistence and global warming potential, have been conducted on HFOs to ensure they are non-PBT (non-persistent, non-bioaccumulate, and non-toxic) and safe for human and environmental health. These oversight agencies rely upon the best, most accurate testing methods available, and have consistently listed HFOs as acceptable and a sustainable alternative to other less climate-friendly substances.

HFOs have a tangible, dramatic, positive environmental impact

The Numbers Speak for Themselves:

We are proud to continue to drive significant progress through our HFO portfolio, which has already resulted in a positive environmental impact. Use of Honeywell HFO technology has helped avoid the potential release of the equivalent of more than 329 million metric tons of carbon dioxide into the atmosphere, equal to the carbon emissions from nearly 70 million gasoline-powered passenger vehicles per year.1

1Calculations are based on actual sales of Solstice products (in lbs) from Jan 2010 through May 2023, and utilize the EPA GHG equivalency calculator for conversion.