Had to have my system replaced and I called them for one of their free estimates. I figured they would just show up and take a quick look and give me a price just like everyone else did, but I was way wrong. They spent of an hour just looking at what was here, they found problems the other folks didn't even think to address. They were much more thorough. They had to leave to do some calculations, but when they returned later that night their rep brought back a very detailed and thorough analysis and proposal. Needless to say, I was impressed and decided to use them. We paid a little more than some of the other quotes, but it was well worth it. Our home has never been as comfortable as it is now. Great experience from start to end, as their installers were very neat and very professional folks. This is a first class organization!