I requested an evaluation of my furnace because even though it was working did not hit enough. The maximum was 65 or 67. The Reliable technician checked the furnace and suggested to fix it for $750 or replaced for 4K. After he left my furnace is not working. I was planing to replaced with the help of Reliable, but know I am not sure because of the coincidence of the furnace stop working when the technician left.