I built a brand new house, 6000 square feet. They did all of the heating and air conditioning. I liked their quality of work. They paid a lot of attention to detail. How they laid the duct work and lines was very logical and smart. They didn't cut corners, they did not do a bad design. They finished quickly, there were never any delays. I know that when their work was checked by En there was only one deficiency. The threads on the end of a pipe were showing. It was fully tightened . The guys were happy to comply. Other than that, everything.