Completed heating tuneup on one Trane gas fired furnace seven years old checked and cleaned burners and flame sensor and igniter and checked blower wheel and electrical and mechanical components checked thermostat and system operation and replaced filter 16+20+1 homeowner supplied turned system on and checked operations left system working View visual findings from this job here - https://visionshare.xoi.io/?id=XA-EE1C-D86E7A2748504EA9B3627E7654DD7A9E