Besco Air Inc. came a couple of years back on a holiday weekend, and they were very nice. I believe I heard about them when I had some duct work that was falling apart after being fixed by my own handiwork. The work that they did was secure and tight and they worked with what I had done already. The previous owner of the house had done some handiwork on it too but Besco Air Inc. worked around that as well. I was very impressed with the work that the person did so I signed a maintenance contract with them for general routine maintenance in my house. They have also replaced a water heater on its last legs.