Before you crank the AC and dread the bill, stop the heat from getting in. These moves do most of the work for a few dollars.
Block the sun during the day
Most heat comes straight through the glass. Close blinds and use thermal/blackout curtains on sun-facing windows during the day.
Move air the smart way
Set ceiling fans counterclockwise in summer. At night, put a box fan in a window and open one on the opposite side for a cross-breeze.
Seal the leaks
Weatherstripping and a door sweep keep the cool air you paid for inside.
Weatherstripping & door sweeps →
Make the AC work less
Raise the thermostat a few degrees (a smart one does it for you) and change the filter monthly in summer.
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