They damaged the new HVAC System when they were installing it. I informed by the installers, but they sent different people to fix it. They want to charge me more and said that they were not responsible for it. In the midst of the dispute, it has driven my electric bill through the roof. I paid for a brand new HVAC system and unit and they are doing a terrible job. I do not know what kind of equipment they are using, but it is not equal to what I am paying.