Performs both routine maintenance, inspection, and installation of h eating, ventilation, refrigeration, air conditioning systems and associated equipment such as dual duct systems, multi-zone units, electrical controls, pneumatic controls, steam coils, chilled water systems, self-contained heating and cooling units, exhaust systems, fume hoods, ice machines, ultra-variable pitch vane axial fan, variable air volume systems, square root extraction, logic relays, velocity transmitters and other miscellaneous equipment. Comprised of Tufts Medical Center, Lowell General Hospital, Melrose/Wakefield Healthcare, an expansive home care network and a large clinically integrated physician network, Tufts Medicine has more than 15,000 dedicated employees and caregivers.