I purchased small oscillating fans to place in the corners of each room in the house (excluding the bathroom) and the house stays cooler with the air flow being kept on the move rather then being still. I would estimate it being at least 10 to 20 degrees cooler in the rooms throughout the house and I believe it is because the air is kept moving in each of the rooms.
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In this heat wave I am very grateful for all the fans I have all over the apartment, which supplement my little AC units! I keep the fans on overnight to cool off the place with the cooler night air.
About using fans - It usually cools off at night - so use that to your advantage and have fans running at night to bring in the cooler air. Then you can use your air conditioning only during the day...
