Heartshare’s old and worn-down building was in dire need of an energy retrofit. The school for developmentally disabled children approached CEC to lower their energy losses and help put money back into the school.

CEC’s study came up with the following list of technical measures:

• Replace the existing inefficient hot water boiler and domestic water heaters with an integrated array of two or three condensing boilers and small storage tank-heat exchangers to simultaneously supply hydronic space heating and DHW.
• Install an Energy Management System, EMS, to control the boilers according to indoor temperature.
• Replace the existing single pane windows with aluminum framed, double pane, thermal broken, argon filled low-E windows.
• Install weather strip in entrance, exit and bulkhead doors.
• Upgrade the T-12 fluorescent fixtures located in the basement and upper floor hallways of the convent to electronically ballasted super T-8 fluorescent lighting; and upgrade the existing incandescent bulbs of the convent rooms to more efficient CFL bulbs.