I contacted DALCO Heating & Air Conditioning for help with the installation of a whole-house humidifier. I took pics in order for them to choose a unit for me and my house, but the initial unit they chose did not fit. I know they were trying to save me money, but it might have been easier for someone to come out and measure the area first. But, they were flexible with scheduling the appointment, and the installers were professional, on time, and everything was cleaned perfectly. This was my first time using them, and I would consider using them again.