Cover your windows. During the warmest part of the day, close your blinds to keep out the sun. It can also help insulate your windows, which stops the cold air from escaping.
Use fans. Most ceiling fans have a small switch on the base that allows you to change the blade’s rotation. During summertime, you should have your fans turning counterclockwise to push the air down and properly circulate the room.
Clean or replace your A/C filter. Air filters keep your AC system running smoothly because they stop dust from blocking your air vents. If your HVAC filter is filled with dirt and debris, air can’t circulate as easily. Air filters need replacing every six months or so.
Keep windows and doors closed. Check for gaps, cracks, and any openings. Have them sealed or cover over them.
Ask your utility company about discounts, budget billing, and other options that could help you reduce your A/C costs. You can save 10 percent a year on your air conditioning bills by setting your thermostat just 10 to 15 degrees higher for eight hours each day, according to the Energy Office. The US Department of Energy recommends aiming for an indoor temperature of 78 degrees F when you’re not at home.