American Comfort Heating & Cooling made a good impression on me. This was the first time I had used them, and they did a great job. I had them replace my upstairs HVAC system, and it is working great. I would definitely use them again, and that is due in part to their professionalism. They also impressed me with their honesty; which is a very good trait to have in the service industry. I highly recommend them and their excellent work.