Rheem is a partner with ENERGY STAR®. Products with the ENERGY STAR® label are the most energy efficient choices you can make as a consumer. Products awarded the ENERGY STAR® label significantly enhance energy savings while providing a healthy environment. By participating in the ENERGY STAR®, Rheem is helping to differentiate between standard-efficiency and high-efficiency products. Using these products helps you save money on your utility bills and works to protect the environment by conserving energy. Some models only qualify in certain matched systems. When you buy an ENERGY STAR® labeled products from Rheem, you are acquiring a product that is in the top 25% for efficiency. Depending on the age of your existing equipment, you can save from 15%-40% on your utility bills by choosing an ENERGY STAR® qualified product from Rheem.