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 may include small HVAC units, standard refrigerators, and small water coolers. On the other hand,

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 may include small HVAC units, standard refrigerators, and small water coolers. On the other hand, if any of this equipment does use more than 0.5 pounds of refrigerant, you must include it in your data for this prerequisite.