Bryan Steam introduces the HE-AB Series of forced-draft gas fired "Flexible Water Tube" water boilers with a guaranteed efficiency of 85%. The high combustion efficiency results from a uniquely designed integrated extended surface heat extractor. Along with other design characteristics, the boilers feature 7 square feet of heating surface per boiler horsepower. They operate at normal operating temperatures, without need to provide for the expense or complications of special venting and/or condensing material. Available in six models with inputs from 900 MBH to 3,000 MBH.

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