Team

One of the most qualified and experienced resource available for building technologies consulting, including de-carbonization due-diligence and engineering, commissioning, energy management and general consulting, covering a wide range of technologies, disciplines and applications relevant in today’s real estate communities. After growing up on Long Island, NY, David graduated in 1979 with a Bachelor of Engineering Degree from the State University of New York, Stony Brook. In 1980, David moved to Southern California and started his career in the building technology industry, with a strong focus on controls, energy management, and Building Automation Systems. David first became an independent consultant in 1983 dba Ellner Consulting. In 1987, David joined Engineered Automation Systems, Inc., Tustin, Ca (EASI) and became President in 1991. EASI was a multi-disciplined consulting engineering Company, providing mechanical, electrical, plumbing, controls, commissioning and energy management services, while pioneering new strategies to solve old problems within the high-end real estate market place. TRC, a publicly held, NYSE Company, acquired EASI in 2001. David retained his role as Sr. Business Unit Manager for what became TRC’s Building Technology Group, in Irvine, California. David left TRC in September, 2008 and once again became an independent consultant dba Ellner Consulting. Since returning to private practice, David has been providing a more personalized version of those same services he became experienced in throughout his career. Over the years David has evolved his technology consulting strategies on hundreds of projects and numerous portfolios for a variety of client and building types. David regularly practices and has pioneered many advances in the application of energy efficient design, MEP and control systems engineering, performance verification, sub- metering, due-diligence, feasibility studies and combinations of services and strategies to provide increasingly more sophisticated clients and project challenges with appropriate and successful solutions.