Hydrofluoroolefins (HFOs) are a class of chemical compounds that contain hydrogen, fluorine, and carbon. They are unsaturated, meaning they have at least one double bond between carbon atoms. HFOs are primarily used as refrigerants and in foam-blowing applications due to their low global warming potential compared to traditional hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs). HFOs are considered more environmentally friendly alternatives because they break down more quickly in the atmosphere, reducing their long-term impact on climate change. Their use is growing in various industries, including automotive and commercial refrigeration, as regulations tighten on substances that contribute to global warming.