With our two geothermal bore holes completed and a 300-foot U-shaped pipe grouted into each, the next step is to connect the vertical loops to each other and then to the house. The crew excavated around the bore holes to a depth of 4 feet and cut off the steel casings at that depth. A similarly deep trench was made between boreholes and to the foundation of the house where the supply and return lines enter through two holes drilled through the foundation wall. The pipes from each bore hole are connected in parallel and then to the house from the midpoint of the parallel connection (to promote balance flow to each loop). A strip of metal tape was placed over the pipes so they could be located in the future and the trenches were backfilled concluding all the outside work for our geothermal heating and cooling system.