Arrived on site and talked with customer about the problems with her furnace. After an agreement to diagnose, we inspected the thermostat and then moved down to the furnace in the basement. Furnace in the basement was displaying an error code that related to the flame rollout switch. Manually reset the flame rollout switch and gave it a call for heat. Once the furnace had fired, flames were clearly rolling out of the heat exchanger entrance, and the burner housing was getting hot to the touch. Took a low pressure switch reading and very low pressure was being provided to the switch. Proceeded to do the full KCM maintenance on the system to thoroughly verify the issue. Provided the customer with three options to replace the furnace. The customer decided to go ahead and replace it with a 95% furnace. Took measurements for replacement and photos and videos of the space where the furnace will be located. Collected half tip-off total at this time. Will come back to perform replacement when