If you are not familiar with the acronym GWP, get used to it. It means “global warming potential.” The push within the refrigerant side of our profession is low global warming potential or low GWP refrigerants.
Another term you will start to hear a lot more is “natural refrigerants.” A natural refrigerant is a chemical that is common in the atmosphere, such as ammonia, carbon dioxide, propane and water. All these are considered natural refrigerants.