The Harsh Realities of Mod-con, Wall Hung and Combi Boilers
And best of all, it's built and tested with pride in Lancaster, Pennsylvania by U.S. Boiler Company. Furthermore, with the advanced Sage2.3™ Control System, the K2 condensing boiler now offers 10:1 turndown and impressive gains in efficiency. The K2 is 95% AFUE for all sizes! The K2 condensing boiler's simplified design includes a hinged inner door that isolates electronics and controls from combustion …
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