McDonough Mechanical Services, Inc.

McDonough Mechanical Service Company was established in 1976 by James L. McDonough. In 1983 a small group of investors with a combined 50 years experience in mechanical specialties and trades accquired the mechanical division and started McDonough Mechanical Services, Inc. Since then we have earned a renowned reputation for superior mechanical and HVAC services.

Today we're one of Northern Illinois' most successful mechanical contractors, employing skilled professionals who share the values and vision that makes us a leader in HVAC services.  Our high standard of quality workmanship while ensuring a safe and healthy work environment is strictly adhered to.  We follow an ongoing safety program defined by OSHA standards and employ OSHA safety certified and CPR certified personnel.  Our technicians are union trained professionals guided by experienced managers.  Coupled with expert designers, engineers, programmers and sales professionals, McDonough Mechanical Services, Inc. has become a powerful force in the HVAC industry.

McDonough Mechanical Services, Inc. is proud to be in association with:

• Mechanical Contractors Association of Chicago
• Lake County Contractors Association
• Plumbers & Pipefitters Local 501
• Local Union 597 Chicago Pipe Fitters