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This credit also encourages selection of equipment that will last a long time and minimizes refrigerant leakage. Refrigerant charge efficiency, annual leakage rate, and end-of-life refrigerant loss all contribute to your total refrigerant impact per ton. Therefore, equipment selection, as well as refrigerant selection, has a substantial influence on the environmental impact of your HVAC system.
Performing the required calculations will give you the value for “Total Refrigerant Impact Per Ton”. Total Refrigerant Impact per Ton must be less than or equal to 100 in order to achieve this credit.
Equipment that contains less than 0.5 pounds of refrigerant is not considered part of the base building system and is exempt from this prerequisite. Examples include small HVAC units, standard refrigerators and small water coolers.
Purchasing and data tracking must cover the entire building, including tenant spaces, with the exception that your project team may exclude purchases for up to 10% of the building floor area if that area is under separate management.
Salvaged material can originate off-site or onsite; if it is from onsite, it must be part of an established internal program focusing on material reuse—you can't just shuffle equipment around the office.
Some materials can fall under either durable goods (for this credit) or "ongoing consumables" (for MRc1). Decide under which category to apply the specific materials, and classify them consistently across all purchasing credits.
If durable goods waste cannot be tracked for the entire building, estimate the total waste from those areas under separate management by extrapolating from data compiled for participating areas of the building. Estimated data can be extrapolated on a per-square foot, per-occupant basis, or other calculation. All estimated durable goods waste is assumed to be non-compliant with the credit.
