CC&H's installation of a Lochinvar boiler last winter and a Carrier AC this summer were both complete, well thought-out, and to Code, something I can't say about the installations they replaced. The crew was polite, quiet, friendly and informative, protected all adjacent appliances, and cleaned up thoroughly. All materials were top quality--no scrimping on extras like tubing and hardware. If you want to be sure it's done right, use CC&H.