Hercules offers premium Refigerants.  A Refrigerant can shift easily between liquid and gas states, which makes it ideal for ACs since it doesn’t take significant amounts of energy to cause the phase shift. Refrigerant starts inside the compressor, where the reduction of volume turns it into a high pressure gas about 150°F. It moves to the outdoor condenser coil, where the warm air (which is still cooler than the refrigerant) moves across it and causes condensation, which releases heat from the refrigerant.