HOME PROJECTS SERVICE SAFETY ABOUT OPPORTUNITIES CONTACT GT Blending Creativity with Practicality to meet your HVAC Needs. ENGINEERING GT has a dedicated engineering staff that performs load calculations, energy analysis, and system design. PROJECTS Our projects team consists of management, temperature controls, an engineering department, and Union sheet metal workers and pipe fitters. SERVICE & MAINTENANCE GT has a full service & maintenance department with union technicians and industry leaders in preventive care maintenance for your equipment serves a myriad of markets including: COMMERCIAL HEALTHCARE HOSPITALITY INDUSTRIAL INSTITUTIONAL MUNICIPAL MULTI-UNIT HOUSING TENANT BUILDOUT GT MECHANICAL PROJECTS & DESIGN, INC., 15729 ANNICO DR, HOMER GLEN, IL, 60491708 645 7400