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When summer temperatures soar, our first instinct is to go into survival mode. We crank the thermostat down, close off empty rooms, and block vents to force cool air where we want it. It all seems perfectly logical. Except, it's doing the exact opposite.Many of our most common cooling habits are actually working against our HVAC systems. Instead of saving money, these good intentions are secretly driving up energy consumption and putting brutal, unnecessary strain on your equipment.If your electric bills are higher than expected, you might be accidentally sabotaging your own comfort. Here are three common AC mistakes you're probably making right now, and exactly how to fix them.

1. Setting your thermostat too low won't cool faster

The biggest AC mistake is lowering your thermostat to the coldest setting, assuming it will cool your home quicker. This misconception costs money without providing any benefit. Air conditioners operate at a constant cooling rate regardless of thermostat setting. Cranking the temperature down just forces your system to run longer and harder, consuming more energy while your home reaches the same temperature it would at a more reasonable setting.Instead of chasing the lowest possible temperature, set your thermostat 3-5 degrees higher than you think you want. Pair this with ceiling fans to circulate air, which creates the sensation of cooler temperatures without actual temperature change. In fact, the best temperature to set your air conditioner to is around 78 degrees, which seems high, but will net you the best efficiency.Your system runs less, your energy bill drops, and your home stays comfortable.