Through the Appliance Labeling Rule, HVACR manufacturers are required to attach yellow Energy Guide stickers to each newly created unit. When initially published in 1979, the rule applied to eight appliance categories: refrigerators, refrigerator-freezers, freezers, dishwashers, water heaters, clothes washers, room air conditioners, and furnaces. Subsequently, the Federal Trade Commission (FTC) expanded the rule’s coverage to include central air conditioners, heat pumps, fluorescent lamp ballasts, plumbing products, lighting products, and certain types of water heaters.