Ozone depletion, direct and indirect effects of global warming, radiation, and the Federal Clean Air Act have created the necessity of the development of new refrigerants and oils. Covered in this module are alternative refrigerants to CFCs and HCFCs, the Montreal Protocol, legislation and regulation, regulatory requirements, equipment certification, refrigerant leaks, mandatory technician certification, refrigerant sales restriction, reclaimer certification, safe disposal requirements, record keeping, hazardous waste disposal, and planning for the future. Important definitions that must be known in order to comply with EPAs rules and regulations are also in this chapter. This module provides field technicians with a solid understanding of alternative refrigerants, refrigerant blends, oils, and their proper application.