Just wondering what comparisons have been done between various geothermal heat pump manufacturers.

I am looking for a 5ton water to air pump and currently considering either Nordic R-65 unit or Climate Master Tranquility 27. They both appear to have same compressor. I am concerned about noise levels and wonder how these two units compare. Looking for pros and cons.

I actually live within an hour of the manufacturer of Nordic (Maratime Geothermal), and would prefer to purchase local, but have heard mixed comments about support and quality of pump compared with the Tranquility model. I will likely be installing pump myself (just finished construction on our new house).

Nathan