Our team at Countywide Mechanical Systems specializes in the installation, service, and ongoing maintenance of commercial HVACR, plumbing, electrical, controls, and solar (commercial & residential). We take pride in being recognized as a leader for our impeccable service and high quality work. License #967998

Financial Strength

As part of the MMC Corp family of companies, we have an aggregate bonding capacity of $550M and the resources nationwide to service all our clients’ needs. Learn more about our 80-year-old organization at MMCCorp1932.com.

True Partners

At Countywide Mechanical Systems, we want to deliver an unparalleled customer experience to our clients. Therefore, we continually strive to provide innovative solutions to each and every one of our partners.


Ever since our founding, we’ve been driven by our values of integrity, quality craftsmanship, teamwork and entrepreneurial spirit to build partnerships that last.

Employee Owned

We are 100% employee owned. That means we each have a stake in our clients’ successes. It also means we are always pulling for each other, in everything we do.


Check out some of the great work our employee owners have done by visiting our projects page.