cleaned & checked A/C & performed Ameren post data efficiency analysis. Test capacitor. Found run capacitor weak: 28&61%low. Replaced capacitor and tested amp draw. Checked Freon level. Low. Topped off with R22 Freon. Checked blower and found bearings very worn. May fail at any time. System has a thermostatic expansion valve that does not regulate superheat properly. System is not cooling to four capacity. Worn compressor. Cooling at 64% of capacity at this time. Compressor: 9.9A. Condenser fan: 0.52A. Blower: 4.1A, MH .ambient:78 .liquid line:93 .suction line: 36 .metering device: TXV . Suction pressure: 63(36) .head pressure:187(97) . Return air: 68.2 .supply air: 51.9 .wet bulb: 58.2 . Work suggested: replace system. Recommend replacing sooner rather than later. Freon charge can be credited toward new equipment.