With Summer Near, What’s the Best Temperature to Set Your Thermostat? Bump your thermostat 7 to 10 degrees for eight hours a day and you could slash 10% off your annual cooling bill — and experts say start at 78°F. Original Source: https://www.moneytalksnews.com/with-summer-near-whats-the-best-temperature-to-set-your-thermostat/