Reviewers The author and publisher wish to thank the following industry and teaching professionals for their valuable input into the development of Heating and Cooling Essentials. Patrick Heeb Long Beach City College Long Beach, CA Mark Kohnen Kaskaskia College Centralia, IL Gary Larson Ozarks Technical Community College Springfield, MO Barbara MacQueen Vancouver Island University–Cowichan Campus Duncan, BC, Canada Dr. Christopher Molnar Porter and Chester Institute Stratford, CT Benjamin Nusz Mid-State Technical College–Wisconsin Rapids Campus Wisconsin Rapids, WI Lawrence P. Penar Oakton Community College Des Plaines, IL R. Jeff Polk Central New Mexico Community College Albuquerque, NM Robert Recko Quinsigamond Community College Worcester, MA Freddie Williams Lanier Technical College Gainesville, GA v