http://www.aerco.com/PDFs/Case-Studies/CaseStudy_GraystoneCorporation.aspx
Boiler room overhaul cuts fuel and energy usage for Graystone Corp.
When George T. Wilkinson Inc. replaced Graystone Corporation’s existing atmospheric boilers with AERCO condensing boilers, not only were boiler room operating costs significantly reduced, but Graystone received a substantial rebate from NStar to assist with project costs. From 2008 to 2009 Graystone saved 30 percent in fuel costs –– including therm reduction as wel