What Is the Average Temperature Setting for Central Air Conditioning?
The U.S. Department of Energy recommends setting the central air thermostat to 78 degrees Fahrenheit during the summer months to conserve energy and reduce energy costs. When a home is unoccupied, raising the thermostat to a temperature of 82 F to 85 F can further reduce energy costs.
The operating cost for central air conditioners increases up to 8 percent for every degree the thermostat is lowered. If 78 F is too warm, especially on the hottest days of summer, set the thermostat as high as possible while maintaining a comfortable temperature. Using a programmable or "smart" thermostat can help take the guesswork out of home cooling needs by raising and lowering temperatures at predetermined times throughout the day.