Jay thought he had discovered Geothermal Air Conditioning during a repair to his own home air conditioning system on Labor Day weekend in 1989. As he explored the opportunities, he found that there were others that shared his vision. Oklahoma State University under the direction of Dr. Jim Bose had commissioned the International Ground Source Heat pump Association (IGSHPA). Jay traveled there to become certified as a designer and installer of geothermal exchange systems. He started Egg Systems in 1990 to provide energy efficient geothermal air conditioning systems to the Florida, and especially the Tampa Bay markets. Jay did very well with the technology, being featured on several network affiliated news stations and featured in many newspapers and magazines and enjoying opportunities to train and speak. Jay received his first opportunity to speak in 1994 as Tampa officials asked him to conduct a two day training class for city officials on the merits of geothermal HVAC technologies. Right behind them, Tampa Electric Company (TECO) began to rely heavily on Mr. Egg's training expertise utilizing him in many and varied forums from conventions to in house educating.In 1995, Jay began to expand the focus of Egg Systems to all facets of Heating Ventilation, and Air Conditioning, hoping to capture a larger portion of the market. Never losing the desire to see this technology flourish, he became a very successful commercial contractor, expanding operation into the Georgia market with his younger brother, Brian Egg, President of Egg Systems Southeast, based in Atlanta. As a result of the passage of the American Recovery and Reinvestment of 2009, EggGeothermal entered into a new age of acceptance, and was able to quickly take its place among the leaders in geothermal HVAC technologies.In 2009, McGraw-Hill approached Mr. Egg and asked him to write a layman's text on geothermal HVAC technologies. The desire was for a textbook that could be used by the end user, business owners, contractors, and engineers to familiarize themselves with geothermal HVAC technologies.In 2010, with the great success of the book "Geothermal HVAC, Green Heating and Cooling", (McGraw-Hill 2010), McGraw-Hill asked Jay to write a comprehensive textbook for graduate level studies on the subject of geothermal HVAC engineering. Jay Egg invited Greg Cunniff, chief applications engineer for Taco (Thermal Automatic Corporation, Inc., Cranston, Rhode Island) to spearhead the hydronic portion of the book, and gratefully, Greg Cunniff accepted the challenge. Further into the writing of the book, Jay invited Carl Orio, chairman of Water Energy Distributors, and pioneer of standing column well technology (SCW) to co-write chapters on emerging geothermal technologies, and Mr. Orio gratefully accepted."Modern Geothermal HVAC Engineering and Controls Applications" (McGraw-Hill 2013) was published to a worldwide audience in July, 2013. Modern Geothermal has been embraced by the geothermal HVAC industry as a comprehensive textbook that expands the horizons of geothermal HVAC technologies into a mature and affordable technology, with broad public acceptance.