After dealing with another company who wouldn't return my calls or answer my questions, and then told my insurance company "they don't think they install furnaces" (they do, it's on their website AND they are one of the largest installers in the area), I dumped them and went with Practical Systems. They were fantastic from start to finish -- they returned my calls on the same day, had great communication, worked seamlessly with my insurance company, and the installers themselves (Josh and Eric) were outstanding. They completed the install in half a day and when I got home there was absolutely no mess. It looked like a new furnace had magically appeared in my home! In addition, the new Daikin furnace they installed is top notch. These guys are the real deal.