Carter Stanfield grew up in the air conditioning business. His family still owns and operates Stanfield Air Systems in Athens, Georgia. He has taught Air Conditioning Technology at Athens Technical College for over 40 years. He writes the blog hvacrfundamentals and is co-author of Fundamentals of HVACR, published by Pearson. Mr. Stanfield’s industry credentials include RSES CMS, NATE Certification, and a state of Georgia unrestricted Conditioned Air Contracting License. He earned a BS Ed Degree in Technical Education from the University of Georgia, where he graduated Magna Cum Laude. Mr. Stanfield is a frequent guest speaker at regional and national conventions for HVACR educators.

David Skaves, P.E., has been a faculty member at the Maine Maritime Academy since 1986 and received the Teaching Excellence award at the college in 2006. His career background includes employment as a marine engineer on supertankers in the merchant marine, a production planner at Maine’s Bath Iron Works Shipbuilding, and an engineering consultant for combined cycle power plant performance testing throughout the United States as well as in Mexico and South America. In addition to his MBA from the University of Maine at Orono, Professor Skaves is a registered professional engineer, licensed first-class stationary engineer, and licensed marine chief engineer. He is currently a member of ASHRAE and AFE.