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. Conversely, any equipme

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. Conversely, any equipment in your building that does use more than 0.5 points of refrigerant must be included in this credit.