Countywide Mechanical Systems

About Countywide Mechanical Systems

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

Serving multiple markets in San Diego and its surrounding areas, 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 in the construction arena.

As part of the MMC Corp family of companies, we are 100% employee owned, meaning we don’t see success until our clients do. With a stake in the success of each and every project, our employee owners take pride in a job well done and pull for each other in everything we do.


Project Engineer Intern

May 2022 El Cajon, CA
“The culture at Countywide is unmatched. Everyone is super welcoming and wants to see you succeeed.”
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