Prerequisite 3- Fundamental Refrigerant Management
EA Prerequisite 3 is a mandatory credit designed to reduce ozone depletion. The building must have zero use of CFC-based refrigerants in the HVAC systems. projects often do not need to take any action to achieve this credit, if their existing system is free of these contaminants. If CFC-based refrigerants exist in the system, EA Prerequisite 3 requires a 5-year phase out program. The project’s mechanical engineer identifies whether or not there should be a HVAC replacement.
(Source: -NC 2. 2 Reference Guide)