Comfort First Heating & Cooling did some servicing on my unit, and everything went fine. I'm happy with their work, and I'm glad they scheduled it automatically for me this last time. This is my first year using them, and for their first visit, I had to call them to schedule the appointment, of which I am not always able to do. This last time, however, they called me, which was much better. I'll be seeing them again this upcoming Spring.