Everything was working yesterday. Today, the thermostat is set correctly, but the system won't kick on. No airflow, no outdoor unit, no relief from the heat. Electrical failures are often the cause, especially when capacitors, contactors, thermostats, or safety switches wear out. An AC repair in Nichols Hills, OK, often comes down to replacing the failed component, restoring power to the system, and making sure nothing else was damaged when the shutdown occurred.









