I am a General Contractor, and I have been using American Comfort Heating & Cooling for over a year. They do all my HVAC work in the Metro-Atlanta area. These guys are phenomenal! They do nothing wrong. They show up on time, and they are super-professional! They send you a picture of the tech they are sending out, and a text message the day before. The following day, they send you another text message letting you know the work has been done. Their communication skills are fantastic. They have their "stuff" together better than any other subcontractor I deal with! I highly recommend them!