That’s all to say that it’s hard to overstate how much the world we all live in depends on our ability to control our indoor climates , regardless of the outdoor temperatures. But these systems (ACs) rely on two central components: energy and refrigerants (CFCs). And both of these components have come under attack from environmentalists and their allies in government.

Cooling is a big contributor to global warming. Much of the existing cooling equipment uses hydrofluorocarbon refrigerants, which are potent greenhouse gases, and use a lot of energy, making them a double burden for climate change.