you are at home, programming your thermostat to rest at a higher temperature while you are away can actually save you a substantial amount of money. for example, programming your thermostat to stay between 80 and 85 degrees every day while no one is in the home can save you between 10 and 15 percent on your normal cooling costs.
also, you should make sure that your thermostat is set to auto mode. if left in the on position, your fan motor will continue to blow even if cooling is not actively taking place. in auto mode, the motor will remain off when your system is not cooling. this simple measure 