Performed annual heating maintenance 13 yr split carrier system Penryn. Honeywell Zoned system, down stairs and upstairs. Tested zoning working correctly at this time. Filter 20-30-1. Tested system, system operational. Single stage heat high efficiency furnace. Ran system thru safety features all working at this time. System hasn’t been serviced regularly, blown in insulation in furnace, removed. Silver ducts sealed. Checked drain lines, no leaks looks ok at this time. Hot surface ignitor ok. Blower capacitor 10mfd ok. Cleaned burners and flame sensor.