We are in the process of learning more about the options for geothermal systems. The answer is getting closer but before a decision is made I wanted to do one quick post to see what input we get.
No matter what we are limited to a vertical/diagonal, closed loop system. That is the only option for a lot of our size. What we need to decide upon though is between a Direct Exchange (DX) system or a Water-based system (anti-freeze). The best way to think about it is DX is Ground to Refrigerant to Air as the refrigerant is the thing circulating in the copper pipes in the ground which in turn provides heating and cooling to the house. In the Water-based system, it is Ground to Water to Refrigerant to Air which includes an extra step (polyethylene pipes in the ground and copper in the house). The DX system has just been recognized by the Canadian Geoexchange and now both are eligible for the government rebates. I could post links to websites on this stuff but instead I want to see what others have found… hint, hint (feel free to post a comment).
No matter what we are limited to a vertical/diagonal, closed loop system. That is the only option for a lot of our size. What we need to decide upon though is between a Direct Exchange (DX) system or a Water-based system (anti-freeze). The best way to think about it is DX is Ground to Refrigerant to Air as the refrigerant is the thing circulating in the copper pipes in the ground which in turn provides heating and cooling to the house. In the Water-based system, it is Ground to Water to Refrigerant to Air which includes an extra step (polyethylene pipes in the ground and copper in the house). The DX system has just been recognized by the Canadian Geoexchange and now both are eligible for the government rebates. I could post links to websites on this stuff but instead I want to see what others have found… hint, hint (feel free to post a comment).
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