This is a very common question, and LEEDuser expects USGBC to clarify its policy at some point. For the time being, the following is the best of our knowledge: Energy Star has developed performance-based specifications for equipment in over 60 product categories, and if the product purchased is not in any of these categories, it is currently ineligible for an Energy Star rating, and it can be excluded completely from MRc2 calculations. If you are purchasing a product that isn’t rated by Energy Star, research the available options and try to buy a more energy-efficient model.