Preventative maintenence inspection on AirQuest standard efficiency gas furnace running in good condition. 16x25x4 air filter is new today. Clean flame sensor and check ignitor ohms. Visual inspection of burners. Operation test from call for heat 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, efficiently and ready for Winter.