We completed the level 2 packaged cleaning. Removed and cleaned the burners and pilot assembly. Inspected the heat exchanger, found a couple of questionable spots on the heat exchanger, smoke tested the heat exchanger and it failed. The exhaust readings look ok. Due to the age of the furnace I recommend having my supervisor come out to go over furnace options to avoid any downtime during the heating season. Checked the electrical on the condenser, all good. Check the indoor coil for leaks electronically, wasn’t able to pinpoint anything. Cleaned the condenser coil. Checked the refrigerant charge, looks ok. Temperature difference inside is 20*. The system is running properly.