AC tuneup on a trane air conditioner. System is an overall good condition. We want to keep an eye on the contactor on the air conditioner outside as it is showing some signs of wear. Tightened all connections capacitor measures within specification. Temperature split is good. I did notice the filter was dirty. I installed an April air conversion kit and converted the filter cabinet to an April air 810. All other equipment is operating as it should at this time.