Tom Olson has an engineering degree from the University of Minnesota. After 3 years in the aerospace industry, Tom switched to the HVAC industry, as a service salesman, for a national temperature control company. After being an ASHRAE (the American Society of Heating Refrigeration and Air-Conditioning Engineers) member, his chapter's Energy Committee was asked to review and comment on ASHRAE 90-75, a document that ultimately became the energy code for all 50 states. Tom was the only temperature control specialist on that committee. It was there he learned that the current air-handling unit sequences of operation were major contributors to HVAC energy waste, comfort and indoor air quality issues.In the late 1970's, Minnesota required that every public school facility have an energy audit. After the first round of audits, Tom discovered that only one energy auditor had addressed the poorly designed air-handling unit sequences of operation. Tom then invited over 250 Minnesota energy auditors to his office, for a free box supper and several hours of training on eliminating simultaneous cooling and heating. When the second round of audits were complete, the engineer charged with reviewing that round of audits, told Tom that he could tell every auditor that had attended one of those training sessions.When the Internet came about, Tom decided to share his HVAC knowledge with anyone interested in learning how to save energy and improve comfort and indoor air quality. He did this with over 5 years of free, monthly e-mail lessons that are now the foundation of this book. At a Wisconsin Association of School Business Officials (WASBO) meeting, Mr. Terry Pease, Director of the Wisconsin Energy Initiative - 2, told the group that Tom's e-mail lessons were the best, ongoing training program that he had ever seen.