In fact, just a few days of temperatures over 100 degrees can cause cooling systems to operate at maximum capacity, which you could see reflected in your bill. When the air conditioner needs to run longer to keep indoor air temperatures cooler, this additional electricity causes a higher bill.
Even high humidity levels without high temperatures during the summer can raise your electric bill if you set your thermostat to keep your home more comfortable with lower humidity. While our area is notorious for having high humidity and hot weather, your bills don’t have to be notoriously high.
You can reduce the amount of electricity you use during the warmer months by raising the thermostat a few degrees. Setting the temperature at 78 degrees Fahrenheit could save you up to 8 percent on monthly cooling bills.
Also, use fans to move air and help you feel more comfortable while you are in a room. Keep in mind, though, that fans cool people, not rooms, so turn them off when you leave.