Tudi installed new furnaces and air conditioners in our house, and put in the HVAC system and plumbing in a new building we built. They have a big organization and the engineer we worked with, George Gittinger, was responsive and professional. But he was the only one who seemed to know his job. To make a long story short, everything they did for us had some sort of problem, large or small; every minor plumbing issue became a major one because they sent incompetent workers; and we have stopped calling them even to fix the things they did wrong(and thus should fix for free)because we know they will continue to screw things up. A few examples: AC condenser placed too close to the house for easy servicing; water lines from furnace twisted so that flow was constricted; pipe fittings that didn't fit forced into position, then failing and spraying water all over the equipment room. And, despite a large organization and promises of immediate response, when we called about this failed pipe fitting on a Saturday morning, no response was received until Monday afternoon. It was a good thing I had a contractor who came out and turned the water off, or there would have been ruined walls and floors.