Tyler April 20. I arrived for blue shield ac service x4. Changed filters. Checked thermostat operation. Replaced batteries on 3 of the thermostats as they were low. Checked blower motors and capacitors as well as blower wheels. Checked refrigerant charges. Dialed in the newly installed carrier to 9 degrees of sub cooling as the nameplate calls for. Took amp draws on compressors and condenser fans. Checked dual run capacitors. Found dual run capacitor on ac #2 out of tolerance. Customer wanted to go ahead and replace it. Swapped it out. Checked electrical connections. Cleaned condenser coils. Units operating properly at this time.