Bosch GWH C 920 ESC ProTankless Commercial High Output Condensing Tankless Water HeaterThe Bosch 920 ES Series is our newest ultra-high efficiency condensing tankless water heaters. With outputs as high as 11.2 gallons per minute, these heaters can satisfy virtually any demand for hot water. These heaters have inputs greater than 200,000 BTU/hr, so they are not eligible to participate in the Energy Star program, but with a thermal efficiency of 94%, they are extremely efficient.
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