Serving multiple markets in San Diego and its surrounding areas, Countywide Mechanical Systems offers construction and precon ... struction solutions along with facilities service maintenance for its valued partners. 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. As part of the MMC Corp family of companies, Countywide Mechanical Systems is proud to offer a wide array of career opportunities. You can own your success too by contacting our talent development team to learn more about opportunities at our company. read more