I was provided a contract with a fair fixed price. Despite problems encountered and predicted, they completed work professionally, neatly, and timely and did not change the originally agreed upon fixed price. My credit union banker recommended them. They did work for the CU and were very pleased. The workmen are taught to do the work right the first time and do not consider the job done until the customer is satisfied. In other words do it like it is for yourself. I am currently recommending them to friends and have invited some over to look at the installation. I would hire them again and will have them service my boiler and the A/C in the future.