Learn More › These days, more than 90 percent of homes and virtually all businesses in America use air conditioning to beat ...

An air conditioner that's not cooling to those levels could be low on refrigerant or have leaks. A unit cooling more than 20 degrees could have a severe blockage.

The best temperature to set your air conditioner at can depend on several factors, including comfort preferences, energy efficiency, and cost savings.

What temperature should you set your air conditioner? According to the Environmental Protection Agency , the optimal AC temperature for peak comfort and energy efficiency is 78 degrees Fahrenheit.

you need your air conditioner. But while you want to remain comfortable at home during the heat of summer, you also don't ...