DALCO Heating and Air installed humidifier on my heating system. They did OK, I actually had to call them with some questions about how system works after they had installed it. They sent someone out the following day and they helped sort out my questions. It was good overall because they did what they were supposed to and the technician was precise, on time, and polite. The price was really good. It was affordable and that's one of the things that attracted me to their service.