A.O. Smith has led the way in innovative hot water solutions for nearly 80 years. With unmatched quality and diversity, A.O. Smith can provide hot water anywhere it's needed. The A.O. Smith ProLine® Standard Electric series features dual, stainless steel heating elements, providing faster recovery along with reliable operation. The ProLine® Standard Electric water heater maximizes hot water output with the DynaClean™ diffuser dip tube by reducing lime and sediment buildup. With high uniform energy factors, the ProLine® Standard Electric series features eco-friendly foam insulation and heat traps, along with other features, to maximize savings on operating costs. Featuring a CoreGard™ anode rod with a stainless steel core, the A.O. Smith ProLine® Standard Electric series has an extended life due to superior tank protection. Heating Elements The dual 4,500 wall elements are made from long lasting stainless steel for fast recovery. Eco-Friendly The ProLine® Standard Electric features foam insulation, external heat traps and a specially designed combustion chamber. These combined produce a high UEF for savings on operating costs. DynaClean® With a DynaClean® diffuser dip tube that reduces lime and sediment buildup, the ProLine® Standard Electric has maximized hot water output. CoreGard® Extending the life of your tank, the CoreGard® anode rod has a stainless steel core that provides superior tank protection compared to standard rods. Glass Coating Featuring Blue Diamond® glass coating, the ProLine® Standard Electric has better corrosion resistance compared to standard glass lining. Brass Drain Valve The solid brass, ball type, tamper resistant drain valve on the A.O. Smith ProLine® Standard Electric provides enhanced flow. Use with a standard female hose fitting for simple draining and maintenance. Anode Rod With an aluminum anode rod ideal for hard water, the rod withstands hard water better than magnesium or KA90. The outlet aluminum rod is installed on the hot water outlet. Temperature and Pressure Relief Valve The temperature and pressure relief valve is located on the top of the water heater. Warranty 6 Year Parts 6 Year Tank