Customer has a ten year old furnace. This is a price to diagnose issue as to what may be causing system fault. Customers thermostat was touch and would kick thermostat on whenever pressed closer to wall. Offered Mike diagnostic pricing and that is we could find it quickly we would wave diagnostic pricing and only charge for thermostat if that was the issue. Began jumper in wires and thermostat and furnace kicked on. Checked strip heat and found them to be pulling correct amount of current. Also checked fan and found it pulling good current as well. Turned power of to unit with system jumpered and tested continuity across wires and received 2 ohms. At this point Mike approved pricing for thermostat replacement and I waved diagnostic charges. Provided and installed new T6 Pro Honeywell thermostat. Heckled function and found outlet temp to be 126 with a 45F split. System is outputting hot air. Tested function of furnace 6 times and found it stopped and started each time with thermost