FlexCore Up to 99% Maximum Efficiency

Full Modulation

 

FlexCore Symmetrical Firetube boilers bring hydronic heating products to unprecedented levels of operating efficiency.

Unlike other manufacturers; from start to finish the FlexCore was designed, developed and engineered by the experts at RBI.

Engineered for performance and longevity the FlexCore utilizes a perfectly temperature balanced heat exchanger that provides not only the highest efficiencies but also a durability beyond that of any competitive firetube boiler on the market.