AC Maintenance: Checked operation of thermostat. Changed 1(20x30x1 return air filter and also cleaned grille. Checked blower motor amp draws and capacitor R:5 A:4.2 mfd. checked pressure/temps superheat/subcooling on refrigeration system. Checked amp draws on compressor and Od fan motor. Checked capacitor mfd ratings 40/5. Checked volts and resistance across contactor. Tightened lugs on disconnect and breaker. Checked condensation drain line. Washed coil inside and out. Replaced failing5mmfd capacitor and also installed 5-2-1 compressor saver to extend life of compressor and save money on energy cost every year !