2121 Building 2121 Building’s Challenge The 30-year-old conventional boiler that heated the 2121 Build- ing had become less efficient than new gas boiler technologies available today. For Tommy Evans, Jefferson County’s chief of build- ing maintenance, it was evident that a new system was necessary to heat the 221,089 square foot building. Tommy was careful to re- search and consider all of his op- tions before making a purchase. Efficien

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