Meet Our Northern California Team

Providing HVAC, BAS, Facilities Control Systems & Energy Service Expertise

Mesa Energy Systems, Inc. (dba EMCOR Services Mesa Energy) people make a difference - they are The EMCOR Advantage®. In today's dynamic marketplace, you need people who are not just good, you need people who are innovative— people who are passionate about your business—people who make a difference every day.

Meet the people behind Mesa's commercial HVAC, building automation systems (BAS), facilities control systems and energy services.

Meet Our Northern California Team:


Mark Collins
Sr. Vice President &
General Manager
View Bio.


Brad Cox
Sr. Vice President
of Operations
View Bio.

Stephen Chin.jpg

Stephen A. Chin
Vice President
of Automation
View Bio.


Leon Rua
Vice President & General
Manager, Sacramento
View Bio.