Preventative maintenence inspection on 1999 Bryant gas furnace. System is running in good condition despite age. 16x25x1 air filter is in new condition. Clean flame sensor and check ignitor ohms. Replaced blower capacitor as current 7.5uf was reading out of spec at 6.9uf. Test run in heating mode from thermostat. Temperature rise is within specs. Blower and inducer motors tested good. 4" galvanized B-vent in good condition and no sign of leaks. 0PPM CO detected during testing. System is operating properly at this time. Due to age of the unit, it is recommended to start planning for replacement although it is currently operating properly.