Summit Heating & Air Conditioning installed a new furnace and air conditioning unit for us, along with some other work that needed to be done. This was my first time using the company, after someone had recommended them to me. Their office staff was courteous, and they were flexible with scheduling my appointment. They had estimated it would take about a day and a half, and that's how long it took them. The installers were clean, efficient, professional, and they answered any questions I had. I would consider using them in the future as well.