I had a WaterFurnace system installed in my home about 18 months ago. I gave it this long so that I could get a good analysis of savings. Turns out there were none. I spent $26K ($18K after tax credit and rebate). I called the installer to discuss the situation and received primarily hostility from him. He did send someone to check the system. The technician found that the pressure in the loop was low so he pumped it up. Problem is I tracked the KW usage for a several days after the adjustment and it appeared to be running at about the same rate as prior to the adjustment. Temperatures were similar. We operate the system at the same temperatures as we did with the old gas furnace/AC combo system. That system was 20 years old. Even the summer AC is not less money than the old system. What should I do?