Arrived onsite for heating maintenance gas fired furnace with humidifier and UV bulb replacement. Basement Furnace System: Turn heat on and confirmed operation. Changed 14x124x1 filter provided by customer. Brushed and Wiped down furnance blower cabinet and gas burners. Burners fired and are in good working order. No visual impingement detected. Checked electrical.. Cleaned the flame sensor but observed some carbon building and deterioration. Observed ignition system fault with a good deal of deterioration of the igniter. Measure temperature rise at 46 degrees. Replaced UV bulb and Humidifier water panel provided by homeowner. System is operating as it should. Homeowner agreed to Bronze Ignition system repair.