2019 Carrier furnace running in good condition. Installed new Carrier Air purifier cartridge that did not fix the ground ding issue within electronics of air purifier system. Contacted tech support while on site, but nobody was available at the time. Will need to call back once contact is made with tech support. Cleaned flame sensor and check ignitor. Visual inspection of burners. Flush condensation trap. Test ran in heating mode from Google Nest thermostat. Delta t of 56F with supply temp of 130F, spec Delta t of 40-70F. 3" pvc flue in good condition and no sign of leaks. 0PPM CO detected during testing in basement. Humidifier pad in good condition, damper opened, run test during heating mode. Blower housing, wheel, and compartment have a bit of dust buildup and is not a problem at this moment, but would recommend getting a blower cleaning done once ductwork cleaning is done as this will get a fair amount more of dust on to the blower system. Furnace is properly operating