We had Practical Systems give us quotes for a new AC, humidifier, dehumidifier, and gas lines (for our fireplace inserts). We moved forward with the humidifier and gas line work. They were communicative every step of the way. They told me what steps were next and explained the work. The two installers did outstanding work. They took no shortcuts. They were truly top-notch professionals. In the spring, we will use them again for other work. I highly recommend them!