It is impossible to remember or acknowledge all the people who have contributed to my education over these sixty odd years. My father taught me the sheet-metal trade. The faculty at Iowa State University gave me good theoretical training. All the people I ve dealt with in my work experience have helped other engineers, contractors, manufacturers representatives, clients. I still remember the owner who took pity on a poor apprentice and taught me how to properly file a screwdriver tip. My many friends in ASHRAE taught me much through formal and informal discussion.

A few names must be mentioned. Ted Neubauer was my first model of a truly professional engineer. John Blossom introduced me to the problem-solving process described in Chap. 1. Ralph Thompson and Doug Hittle taught me electronics and many other things. Frank Govan wrote the sections on boilers in Chap. 10. Don Bahnfleth taught me how to write reports. Frank Bridgers and Don Paxton gave me my first job as an engineer, along with basic training in design and professional attitudes.

Finally, as always, I could accomplish nothing without the support, encouragement, and especially, patience of Wilma, my wife of sixty-two years.

Roger W. Haines

My association with Roger Haines goes back to 1964 when I, as a young engineering student, found summer employment with Bridgers and Paxton Consulting Engineers in Albuquerque, New Mexico. Roger was the Chief Design Engineer and was patient with and helpful to a rank beginner. With Roger, I too give thanks to Frank Bridgers...