Blue shield fall service. Furnace— Replaced filter, motor and wheel are clean, motor is ECM, run capacitor not required, hot surface ignitor checked good, cleaned and checked flame sensor, pressure switches(2) checked good, inducer motor run load amps are good, manifold pressures are within mfg specs( low fire 1.47 in wc, high fire 3.55 in wc), cycled system with tstat, tstat and system are operating normally. Conducted carbon monoxide test—0ppm. Package unit— Replaced filter, blower motor is ECM, run capacitor not required, spark ignitor operating normally, cleaned and checked flame sensor, pressure switch checked, inducer motor run load amps are good, manifold pressure is 3.48 in wc, within mfg specs, cycled system with tstat, tstat and system are operating normally. Conducted carbon monoxide test—0ppm. Tested building carbon monoxide detectors(2), both tested good.