These fans are installed in a central area of a house to draw fresh air into the living space from outside, and then up into the attic and back outside. They do a great job of helping beat the heat for a fraction of the energy cost of running air-conditioning because they reduce both interior and attic temperatures. Put turbine ventilators on the roof. They spin in the lightest breeze, creating suction that effectively draws hot air out of an attic, thus reducing the temperature inside the house. Install screen doors where possible.
Screen doors are a cost-effective way to help cut cooling expenses.
Insulate your attic. Also, if you have a raised foundation, consider insulating under the house as well. Low-voltage lights provide ample decorative lighting outside at a fraction of the cost of operating standard voltage lights. Also, because no high-voltage conduits, boxes or fixtures are needed for installation, initial setup and maintenance costs are also substantially lower. When selecting new appliances for your home, note that gas-fired cooktops, ovens, furnaces, water heaters and dryers cost substantially less to operate than do their electric counterparts.