Stay cool this summer by entering the Keystone Window Air Conditioner Sweepstakes for a chance to win a free AC unit. Valued at $429, this energy efficient window air conditioner could be yours by entering the sweepstakes by August 7, 2023. Time is running out to submit your one-time entry, so don’t delay. With temperatures rising, a free air conditioning unit is the perfect way to beat the heat. Enter now for your chance to win and stay comfortable all summer long. The Keystone sweepstakes ends soon, so enter today for your shot at winning a brand new window AC unit. Stay tuned to see if you’re the lucky winner!