This video demonstrates how to flush and purge a geothermal ground loop system of air and debris using the Geo-Flo flush cart and a pressurized flow center. The video focuses on flushing the ground loop, but discusses how to use the 3-way valves on the flow center for flushing the heat pump, and pressurizing the system. For a complete step-by-step manual that follows this video, go to the Geo-Flo website, and download the flush cart manual from the literature section