I needed 4 new furnaces for some rental properties. I wasn't thrilled with whom I had used for my own residential furnace, and found Airworks instead -- their great reviews on HS were what first drew me to them. They were able to give me a great financing package, as 4 furnaces was a hefty bill, and their service has proved exceptional -- they will come out day or night ASAP to service their equipment, and once came out to service another company's furnace! A broken old A/C drain hose got disconnnected by my drywaller, which subsequently led to a leak and mild damage to the ceiling of the room below. A quick trip out by Airworks resulted in a temporary reconnection, and the tech told me exactly what $1 piece I need to get at HDepot which would allow me to make the permanent connection myself, and save me some $. A couple of days ago I was again able to make a last-minute appt to check out the furnace in another house (furnace installed by another company before I found Airworks). The furnace turned out to be fine, and the problem was actually with TO Hydro. But the point is, Airworks got there, and they got there fast. Once Hydro had restored the electricity hours later, Airworks told me over the phone what to do to get the furnace back on. It was a snap, and saved the me the cost of another visit....A furnace is a furnace, but the SERVICE offered by Airworks is wonderful, and that's what makes them my #1 furnace co.