The company I work for has started selling geothermal and we have only done one job so far. We were able to borrow a flush cart from the dealer ( Geo smart ) when we did the install. That was about a year ago and we have no done another one since. I also built a house last summer and installed the ground loops during construction. I have now installed the heat pump ( installed gas furnace originally and have now retro-fitted for eco-energy rebate). The problem is I do not have a flush cart and my boss doesn't want to buy or build one because were not selling enough. I was wondering, Can I rig something up with a 1/2 hp submersible well pump? We have a few lying around the shop. This would only be a one time deal. I have 3 loops, 600 ft each of 3/4 poly plus 75 ft of 1" 1/4 from the house to the loops. Any suggestions on how I could make this work?