Performed heating maintenance on a 2022 Carrier 80% efficient single stage natural gas furnace 16x25x1 filter is in good condition Blower is clean Burners in good shape Pulled flame sensor and cleaned Checked gas pressure and temperature rise Opened fresh air damper Motor Amp draws are in specification No gad leaks detected Flue pipe in good shape 0ppm carbon monoxide reading during furnace operation No concerns found on today's visit