Division 23 Mechanical Services (Division 23) is a full service heating, ventilation, and air conditioning company. We provide start up, service and repair of all types and sizes of commercial and industrial systems. Division 23 specializes in large tonnage chiller repair, maintenance and service contracts. We service scroll, rotary screw, centrifugal, and absorption chillers made by all major manufacturers. Division 23 is well positioned to handle all of your HVAC needs. Employees include highly qualified Pipefitters, HVAC Technicians, Project Managers, Apprentices, and a highly motivated team of Administrative Personnel.