Keep drapes closed or add room-darkening shades to block out the heat from the sun. The outside portion of a central air conditioner is the condensing unit. Keep it clear from dried mud, debris and grass clippings, because it needs to breathe. Ask the contractor for instructions on how to do it yourself. Check it periodically, especially after an intense rain.
Mud can splatter onto the unit and block the air after it dries.
Use a programmable thermostat to routinely raise the inside temperature while you are at work or routinely away from home for 4 hours or longer. This automatic adjustment reduces the cumulative operation of the air conditioner while you are away, and eliminates any discomfort when you arrive home. Use your programmable thermostat to automatically increase the temperature setting at bedtime. Sleep under lightweight bedding and use fans during sleep. You will sleep comfortably with less cooling.