Performed maintenance on a 2006 Goodman two stage 95% efficient natural gas furnace Humidifier water panel is new Air filter is in good condition Blower is clean Drain trap is clean Pulled and cleaned flame sensor Adjusted staging to 20 minutes High fire gas pressure 3.5"wc Low fire gas pressure 1.9"wc Combustion results are in healthy range for a good heat exchanger Temperature rise was 35-40⁰ in both fire rates Tested supply air for carbon monoxide, reading was 0ppm No concerns found on today's visit