Welcome to the GeoExchange Forum Welcome to the GeoExchange Forum. The forum provides the opportunity to ask questions, share information and generally improve the general understanding of geothermal heat pump systems. Anyone can view the forum discussions, and an easy registration process allows viewers to post to the forums. The forums are moderated regularly and every avenue is pursued to prevent spam; if you see any spam, please contact the Forum Administrator or use the Report Post feature if you are logged in. Feel free to make suggestions about how the forums can contribute to your efforts.