The Master-Fit® BTR series provides outstanding performance and maximum installation flexibility for both new construction and replacement applications. Multiple options for placement of water connections and low installation clearances are additional installer-friendly features. Master-Fit® water heaters include the Eliminator™ – Delivers automatic self-cleaning protection against buildup of lime and other sediments. As deposits of lime, and and other sediments accumulate inside the tank, they form a barrier between the burner and the water and concentrate excessive heat around the critical weld areas. The result is reduced energy efficiency, higher operating costs and a greater risk of premature tank leaks. Master-Fit® takes a bite out of sediment with the ultimate lime tamer... the Eliminator™

A. O. Smith offers the largest commercial product selection available, including the most specified commercial unit in the U.S. We offer more than 500 different commercial models, including gas fired, oil-fired, and electric configurations, ranging in capacities from 5 to 10,000 gallons, with input range from 50,000 BTU to the equivalent of 4,000,000 BTU. Our comprehensive line is the natural fit for spec jobs requiring everything from the smallest commercial installation up to the largest multi-structure complex.