Steve Doty 
Commercial Energy Auditing Reference Handbook, Third Edition [PDF ebook] 

Designed to serve as a comprehensive resource for performing energy audits in commercial facilities, this revised practical desk reference for energy engineers has been updated and expanded. All focal areas of the building energy audit and assessment are covered, with new chapters on water efficiency and feedback and behavior in energy management. Updated topics include compressed air, computer modeling, data center efficiency, measurement and verification, lighting, laundries, HVAC economizer savings and building vacancy along with manufacturing unit operations and calculating savings from automatic controls.