These windows and doors help insulate the home and keep the air inside cooler longer. If you have central air conditioning, direct the registers up in summer because cold air does not rise. Also make sure that your furniture and drapes are not blocking air conditioning registers or window units. Try to cook early in the day or late in the evening when it is cooler, and cook outdoors when possible. Use the exhaust fan sparingly to get rid of unwanted heat in the kitchen.
Fans use only about one-tenth of the energy that air conditioning does.
So use fans to make people feel cooler. However, if no one is in the room to enjoy the air movement, the fans may be adding heat to the room. In reality, fans do not lower the room temperature. Be sure to turn fans off when no one is using them. Dry your clothes outdoors on sunny days.