Don Prather is Technical Services Manager with the Air Conditioning Contractors of America (ACCA). He is the author of Technician’s Guide for Quality Installations and Manual B Balancing and Testing Air and Hydronic Systems. He holds a BS in Mechanical Engineering Technology, is licensed as a Master HVAC Contractor in Florida, and holds a 1st Class Stationary Engineer license in Maryland. Previously employed as a hands on Chief Maintenance Engineer with 20 years of progressive experience in designing and implementing energy efficiency related upgrades and preventative maintenance plans in large facilities to include; hospitals, meat-packaging plants, high-rise residential buildings, laboratories, restaurants, hotels and private clubs. Don has over 40 years of experience with HVAC and building performance applications including 9 years testing and balancing (TAB), commissioning, retro-commissioning and re-commissioning high profile commercial and industrial buildings.