Silver club fall service. Homeowner maintains filters. Blower motor is ECM, run capacitor not required, hot surface ignitor checked good, cleaned and checked flame sensor, pressure switch checked good, lnducer motor run loads amps are within mfg specs, all limits and safeties checked good, manifold pressure was 1.5 in wc on low fire, 3.5 in wc on high fire, within mfg specs, air temperature rise was 40 deg, within limits. Carbon monoxide was 0 ppm. Recommended that homeowner purchase a carbon monoxide detector. Recommended that it be installed near tstat. System operating normally.