I cannot say enough good things about Chris Shepherd and his Dr. Energy Saver team. They were extremely professional and thorough from start to finish, and we have been much more comfortable in our home. We bought new geothermal units for our 50 year old home when we purchased it a couple of years ago. We thought the geothermal unit that was solely responsible for heating and cooling the second level of our house was malfunctioning so we had it inspected and had someone come out to service it because it just couldn't hold the temperature setting even though it ran almost constantly. But the unit seemed fine. Finally, we thought that we needed to consider that it might be a different problem altogether. So my husband did some research and we called Dr. Energy Saver. Throughout the diagnostic process, which was very informative and spot-on as it turned out, Chris and his team kept us up to date on the needs of our home and how to fix them. We actually learned a lot about making our home more energy-efficient. We were concerned about pricing since we were correcting some mistakes made by previous insulation installers and adding insulation in places that had never been insulated; they brought us two detailed, cost-effective estimates, customized everything for us and were very pleasant to work with. When they began working on our home, some unexpected challenges arose, including tornado warnings and loss of electricity, but they handled everything with professionalism and excelled in solving the problems, and in a way that was no extra cost to us. They were willing to put in extra time daily to finish the job on time. And in the end, we were thrilled with the results. It has been almost a year now, and our home has been cooler in the summer and warmer in the winter. We had grown accustomed to some areas of our home varying in temperature from the rest of the house and didn't realize how extreme the differences really were until the problem was fixed. We no longer have to tweak the thermostats all the time to keep the temperature regulated. It is hard to believe the profound improvement we have seen in our home. I highly recommend Chris and Dr. Energy Saver.