Propane furnace with straight cool condenser installed in 2017. Intermittent communication error has been causing the system to shut down randomly ever since the system was installed 8 years ago. Can not properly diagnose the issue at this time as the system was running and cooling the entire time that the technician was here. Upstairs unit needs to be leveled. Upstairs unit is very hard to access in the attic. Highly suggest moving the furnace back to the closet in the hallway where it was originally. System is a little low on refrigerant. Can not further diagnose issue at this time. Comfort advisor is scheduled to meet with the customer this evening. Customer would like prices for comparison on a propane furnace with straight cool and a dual fuel system.