Called into reliance 1800 number for service on my rental water heater, it was a Saturday morning around 830am,i was advised that a contractor would call with in 1 hour to book a appt, during the time I was on the phone with the rep my call waiting had beeped , switched over and to my surprise John from Canadian Air system was calling to advise he is on route and was 10 min away ( wow, I was shocked, I was worried I would have to stay home all day to have some one come out for service) once John had arrived I then showed him to my water heater, within minutes he knew what the problem was and vent to his truck and replaced the part and advised that we would have hot water in about 1 hour. I really appreciate the fast and very professional service that John has provided, I would recommend John from canadian Air and reliance to everyone..