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1. | A O Smith Water Heater ECRT 52 ManualL E E D Energy Efficiency A. O. Smith's Energy-Efficient Water Heaters for Environmentally Friendly Installations About LEED The Leadership in Energy and Environmental Design (LEED) Green Building Rating SystemTM is the nationally accepted benchmark for the design, construction and operation of high-performance energy-efficient buildings. LEED provides building owners and operators with the tools they need to have an immediate and measurable impact on the energy efficiency of their building... Brands:A | User Manual | ENGLISH | [View] | ||||||||||