It's easy to glamorize summer with its sunny days and cool nights. However, when the heat waves come around, summer isn't so ideal. Air conditioning (AC) units struggle to keep homes cool, especially older units, so you may have to take extra measures to keep a house cool and comfortable. Fortunately, there are many ways to regulate your home's interior temperature using common household items. Below are nine ways to cool down your home without investing in a new AC unit.