W Larsen Angel Author

W. Larsen Angel, P.E., LEED-AP, is a senior mechanical engineer at Building Dynamics, LLC. He is certified by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) as a Commissioning Process Management Professional (CPMP) and is the co-author of HVAC Equations, Date, and Rules of Thumb, Third Edition.