When spring and summer temperatures rise, so do electrical bills in many American homes. One of the biggest causes for this seasonal rise in energy usage and costs is the air conditioner. It takes a lot to run these cooling machines, so take measures to make yours run as efficiently as possible. Keep your air conditioner clean and free of debris. Then, prune away vines, grass, and other plants that may be blocking air flow to the machine, in order to reduce strain on the air conditioner, and as a result, lower your bill.