[jeffk]

A geothermal system can easily cost over $30,000. The success of the ability of the system to be able to properly heat the house and provide a reasonable payback period seems to be largely up to the proper sizing of the system and that rests squarely on the shoulders of the contractor. Further, there is no easy fix for a poorly sized system. What are you going to do, drill another well? In addition, from the discussion on this thread there seems to be a lot of variation on the success of the installations and the efficiency of the systems installed.

MilhouseEnterprises might have been blunt when he said that many contractors don't know how to properly install a geothermal system but I think he may be accurate. The success of plunking down $30K+ on a geothermal system rests largely on the capability of the contractor. He sure the heck better know what he is doing. Anyone considering such an installation cannot afford to trust an installer on blind trust but needs to thoroughly check them out. MilhouseEnterprises is telling us "buyer beware" and with that much money at stake, we should.