I needed a part repaired in my system, so I decided to use Comfortmaster Heating & Cooling Services again. They did their job well, but in the end, they would not break up the cost of parts and labor, instead, they just gave me one lump sum bill. It did not sit well with me, and I would like to know why they could not do what I had asked of them. This was my second time using their services, and as of right now, I do not think I would use them again.