Save AC During The Summer

To save on AC costs during the summer, set your thermostat to 78°F (26°C) while home, and higher when away, as every degree higher saves 1–3% on cooling. Use ceiling fans, keep blinds closed during the day, seal air leaks, and change filters regularly for maximum efficiency.
Here are the most effective ways to save on AC this summer:
Optimal Thermostat Settings: Use a programmable thermostat to raise the temperature when you are asleep or away, following the "4-by-4 rule": raise it 4 degrees if you'll be gone at least 4 hours.
Use Ceiling Fans:
Fans allow you to set the thermostat higher while feeling just as cool because they circulate air, enabling a setting of 76–77°F instead of 74°F.Block Sun and Heat:
Keep blinds, shades, and drapes closed on sun-facing windows during the day to block heat gain.
Maintain Your Unit:
Clean or replace air filters every 90 days (more often if you have pets) to prevent restricted airflow. Clear debris from around the outdoor condenser unit.
Seal Leaks:
Use caulk or weather-stripping to seal drafty windows and doors, as leaks can account for up to 30% of your cooling energy use.Reduce Internal Heat: Avoid using the oven; instead, use a microwave or grill outside to keep heat out of the house.
Avoid Excessive Cooling:
Don't set your thermostat to a colder setting than normal when turning it on; it won't cool the house faster and will result in excessive, unnecessary costs.