A. O. Smith Earns U.S. ENERGY STAR® Program’s Highest Honor Share Article America’s most trusted water heater brand celebrates ENERGY STAR® Sustained Excellence Award with $4,000 Sustainable Home Giveaway The average family uses 400 gallons of water at home per day. “Heat pump water heaters are by far the most efficient way to heat water, resulting in significantly lower energy bills, fewer carbon emissions, upfront and long-term savings, and plenty of hot water," said Bob Heideman, senior vice president and chief technology officer at A. O. Smith. ASHLAND CITY, Tenn. (PRWEB) May 12, 2021 A. O. Smith, the world’s largest manufacturer of commercial and residential water heaters, has been recognized by the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy (DOE) with the 2021 ENERGY STAR® Sustained Excellence Award. A family-founded business with 146 years of American manufacturing expertise, A. O. Smith offers more than 1,000 ENERGY STAR certified products across its brand portfolio. This year marks the third consecutive year that A. O. Smith has been named an ENERGY STAR Partner of the Year for delivering significant energy and utility savings through its high efficiency water heaters.