Our work place has a monster of a heating unit. Nick was out on a VERY cold day to replace the blower unit. He plugged away at it and got it working about 7:30PM. It was really cold and he was awesome. Then Daryl came out the following week,as another part of the heat system developed a problem. He was terrific, and even pulled the filter unit out and changed filter (it is a pain to change). Gene came out today to give an estimate on cleaning the coils. He is terrific also. They are very knowledgeable, very friendly, very reliable, give great advice, and help keep the cost down as much as possible. They are absolutely terrific. The office staff is wonderful too. I highly recommend Centex Mechanical.