If you don't want to read my full review, let me just tell you that we ultimately chose Dr. Energy Saver because they guaranteed to resolve our problems and we trusted that they would stand behind that guarantee. They did not disappoint and actually exceeded my already high expectations. When we first moved in almost three years ago, due to winter energy costs coming in on the average of $500 per month and well over $300 in the summer, along with some pesky temperature fluctuations from one level of our home to another, we began looking in to insulation providers to see what could be improved in our 35-year-old home. We met with at A LOT of insulation companies and it seemed each of them had a different idea of what needed to be done to accomplish this (read: what they wanted to sell us). They did not offer any sort of guarantee that we would achieve our goals and after not feeling particularly "wowed" by any of them, we put the idea on the back burner. Well after a very hot July this year and a very cold October, we decided to pull the trigger on either new windows or new insulation. This go-around, we took a lot more time to do more research on the front end and everything kept pointing to insulation being more important than replacing windows and one company - Dr. Energy Saver - kept coming up. So we decided to have Chris with DES come out. He was friendly, professional and beyond thorough (he was probably here 1.5 - 2 hours using all sorts of measurement tools). I appreciated the fact that he wasn't pushy at all (unlike most of the others who I couldn't get to leave) and said he would like to go back to his office, review his findings, and work up some different bids. Chris ultimately gave us 2 proposals. The first was just what was necessary to achieve our biggest concerns and the other included more helpful, but less critical, items such as vacuuming, a catwalk, etc. After a lot of discussion, we ended up going with something in between the two scenarios. The DES proposal was higher than the other companies that came out previously and when we mentioned that, Chris showed us where his price for simply blowing in insulation was roughly the same as theirs; that his cost was higher because of all the other efforts that he felt were necessary to achieve a noticeable improvement. And that brings me back to why we ultimately went with Dr. Energy Saver: THEY GUARANTEED OUR GOALS WOULD BE MET and if any of them weren't resolved to our satisfaction, any additional remedies would be done at no cost to us and even further, if those didn't fix the problem, he would give us our money back. During all our research, we never once came across another company's information that even hinted they would guarantee that our perception of comfort in our problem areas would be achieved! The installation took 5 full days (Chris had estimated between 4-5 days) and at no time through the process did we ever doubt our decision! They were professional, gave us regular updates and cleaned up at the end of each day. A huge shout-out to Jason - Chris, whatever you're paying that guy, it's not enough! In the end, everything we wanted to achieve has been accomplished and Chris has followed-up with us 2-3 times to see how we're feeling in our home. In fact, not only has our upstairs gone from the coldest part of our home to the warmest, we just got our first full Duke Energy bill and it was almost HALF of what I expected. The bill, less than $400 (for a 4800 sf home), was also the smallest winter energy bill we've ever received and it was for a very cold December. Chris and Jason clearly love what they do and we certainly enjoyed working with them. I can't express how glad we are that we waited for the right company. Also, based on how things feel now, we don't plan on getting any new windows and that will save us almost twice what we spent on insulation). This is one of the best contractor decisions we have ever made and I recommend them highly to all my friends. Many thanks to Chris, Jason and the DES team - we are grateful for all you have done!