Went for a tune up today. Tested for static pressure, system is within range when calling for cool. Did check coil and noticed a lot of rust around then coil. Temp split was off for system read 15.6 degrees isn’t within specifications. Checked charge on system is low on refrigerant. System carriers about 12.6 pounds of charge. Did check electrical components all are passing for manufacture specifications. Capacitor is on the underside of failing but still within range. System is up and running before leaving. Thank you for choosing LBA services-Johann