Did you know even the best Air Conditioner are not designed to keep up with the extreme heat.
When we get to about 118° to 122° the units will struggle to keep what temperature you have your thermostat set at. So your unit will run more during these extreme temps.
One advise is if your thermostat is set at 75° and the temperature outside is 118°, just turn your thermostat up to 79° to help your unit compete. It will help save on your unit in the long run.