W. Larsen Angel, P.E., LEED-AP, is a principal in the MEP consulting engineering firm of Green Building Energy Engineers. He has worked in the MEP consulting engineering industry for over 20 years. He has contributed to the development of design standards and continues to find new ways to streamline the HVAC system design process. Larsen is a Member of the American Society of Heating, Refrigeration, and Air-Conditioning Engineers (ASHRAE)and is certified by ASHRAE as a Commissioning Process Management Professional (CPMP).