I just had a new natural gas furnace installed. Ted, who came down to provide me with the quote had an immense knowledge of boilers and there installation making others seem poor by comparison. He recommended the Viessmen boiler which is working great. The attention to detail was great, they were focused on aesthetics and function. They completed the job in a day starting at 7am and not leaving till after 9pm, making sure the job was complete. They were not the cheapest of the companies I had quote but the knowledge and great service made them the best choice.