I had a furnace out and called at 8:30 AM and said the last time this occurred the Service Tech did not arrive till 4:30 PM and that was OK that time because I did not need to go anywhere on that day but this time I could not wait all day because I had appointments that I had to keep. The Service Tech said he was diverted from his original call to take care of me, he arrived early, was very thorough and fixed the problem. This allowed me to keep my appointments. Thanks to everyone for accommodating me.