Upon arrival spoke with customer and we went to basement unit. Turned furnace on and tested gas pressure. Adjusted pressure to 11.5IWC. Let system run awhile and made sure pressures stayed. Wires all tight. Blower is clean and amped within specs. Shut system down and turned it back on and made sure system pressures stayed the same. Found no major issues, customer explained he gave the office the go ahead to do the heat exchanger in the spring when using the heat is done. Customer is happy at this time of service.