Performed heating maintenance on a 2016 80% efficient single stage ICP natural gas furnace 16x25x4 filter is still good (there is a spare next to the furnace) Pulled and cleaned flame sensor Blower capacitor still measured 7.7mfd Blower wheel clean Burners in good shape Gas pressure 3.8"wc Temp rise 48⁰ Motor Amp draws are within specification 0ppm carbon monoxide detected Flue pipe in good shape No gas leaks detected No concerns found on today's visit