Silver club fall service. Replaced electrostatic filters(2) filter media. Blower motor run capacitor checked good, hot surface ignitor checked good, clean and checked flame sensor, pressure switch checked good, all limits and safeties checked good, manifold pressure is 3.5 in wc, within mfg limits. Cycled system with thermostat, system is operating normally. Carbon monoxide 0ppm. Checked humidifier operation. Humidifier operating normally. Water pad looks like new.