I am new to the forum but I have been trying to troubleshoot my furnace for a while now. Last year I had to replace the exhaust blower I think it is called because the motor burned up and I had no heat since it couldnt pull the fumes out. Now sometimes (although becoming alot more frequent) I have to go to the furnace and turn a (light) switch that is going to the furnace off and back on and it will start right up. I have replaced that switch and still has the same problem. any and all help would be greatly appreciated.