We have been in our home for 5 years and every winter we have the same problems that no contractor can fix. We even put in a new heat pump and air handler. So now we are looking into starting from scratch: wells, loops, heat pump, air handler, ducts, everything. In your professional opinion, which is better: open loop or closed loop? Which one would you install in your home and why? I am looking for the most efficient, highest output, biggest bang for my buck. Thanks in advance for your help.