Dan Holohan began his love affair with heating systems in 1970 by going to work for a New York-based manufacturers representative that was deeply involved in the steam- and hot-water heating business. He studied hard, prowled many basements and attics with seasoned old-timers, and paid close attention to what they had to say. Today, Dan operates the popular website, HeatingHelp.com. He has written hundreds of columns for many trade magazines, as well as 18 books on subjects ranging from steam- and hot-water heating, to teaching technicians. His degree is in Sociology, which Dan believes is the perfect preparation for a career in the heating industry. From Maine to Hawaii, and from Florida to Alaska, Dan has taught more than 200,000 people at his seminars. He is well known throughout the heating industry for his entertaining, anecdotal style of speaking. Dan lives on Long Island with his wife, The Lovely Marianne. They have four incredible daughters, all out in the world and making a difference.