An introduction to ground source heat pump systems, a booklet offered by the International Ground Source Heat Pump Association explains the basics about the different systems and how they work to save money and energy. With full-color illustrations and detailed descriptions, this booklet helps make learning about ground source heat pump systems simple and fun. The booklet also contains updated sections about the benefits of the systems, as well as frequently asked questions, to ensure you are getting as much information about the technology as possible. The booklet is sold in packages of 25, and each booklet features reserved space on the back cover to insert your own company information to hand out to clients. For more information, visit www.igshpa.okstate.edu.