We’ve been in business for more than 90 years not because we’re lucky, but because we show up on time, return phone calls, and meet our deadlines. We perform our work to stringent standards, from the smallest commercial HVAC system to the most complex medical-gas or industrial application. With registered engineers and even a #LEED Accredited Professional on staff, McCauley has the management team and field personnel to meet any challenge. If you’re looking for a Chicago mechanical contractor for industrial piping, #HVAC installation, Design/Build, or HVAC service and maintenance, there’s only one name you need to know: McCauley.