Management Team

David Nurse, COO and President David brings 30 years of HVACR/energy management experience to Core4.  Most recently he was director of sales at Baseline, an energy efficiency/sustainability consulting firm that provides carbon foot print analysis.  Previously he was vice president of North American Contracting at Ingersoll Rand, where he implemented technology and energy monitoring programs based on business requirements including field service automation, infrastructure requirements, business application solutions, customer sales strategies and international service technician deployment.

Fred Heidrich, CIO Prior to Core4, Fred was co-owner and President of LC Consulting Services, a custom software programming and mechanical engineering design firm based out of New York. Prior to that, he was a development engineer at the Dresser-Rand Company responsible for various facets of processor compressor development, design and testing.

Rick Cockrell, CTO Rick is a senior energy efficiency designer with over 20 years in the energy efficiency/refrigeration space, most recently with Bell Products, Inc.  He is the former president of S&W Refrigeration, Inc.

Jamien McCullum, VP Business Development Jamien was most recently a principal at New Cycle Capital, a leading clean tech venture capital fund.

John Sawyer, VP Product Development Prior to joining Core4, John was co-owner and Vice President of LC Consulting Services, a custom software and engineering design firm. Prior to that, John spent 25 years at the Dresser-Rand company as a master designer and is the owner of 5 US patents relating to compressor technology