EMCOR Services Mesa Energy Systems celebrated its 25 year anniversary in 2008. We are a licensed HVAC maintenance, service, building automation, and retrofit contracting company headquartered in Irvine, California. We have 10 local offices serving the greater Los Angeles, San Diego, San Francisco, Sacramento, Bakersfield, San Jose, Pleasanton, and Fresno market areas.

Since our establishment in 1983, we have earned a reputation for providing value to our many satisfied customers through high-quality services, and efficient, cost-effective, customized retrofit solutions.

The recent demands of the marketplace have transformed us into an Energy Solutions Company, assisting our customers in achieving optimal building energy performance, utilizing improved maintenance, ongoing retro commissioning, and favorable ROI energy retrofits.