EMSI is a mechanical engineering/commissioning firm located in Southern California.  In addition to commissioning services we perform design retrofits and upgrades of mechanical systems. We focus on industrial, commercial, hotel, pharmaceutical, hospital, and governmental facilities.  We provide a safe office and field environment where our employees can apply their individual skills.  By gaining the LIKE, TRUST, AND RESPECT of our employees, clients, and vendors we will succeed in being the best provider of engineered mechanical services we can be.  By appreciating and utilizing the wealth of knowledge from our valued employees and vendors we will provide services beyond our clients expectations.