According to the NationalGrid, each degree above 75 degrees saves you 3% of the energy used to cool your home and the lower you set your air conditioning temperature, the more costly it is to operate.

There isn't a perfect temperature; there's a range. On the cool side, the ideal room temperature is between about 71 and 73 degrees, according to the LG company.

The ideal temperature to keep your thermostat at during the summer is 78 degrees, according to various energy companies, including New York's Rochester Gas and Electric Corp. and National Grid ...

Then, when you're at work, set the temperature seven degrees higher. In the evening, drop it down to 78 degrees, but when you go to bed, increase the temperature by at least 4 degrees.

At what temperature do most people set their AC in Arizona? For the second consecutive year, Arizonans voted 78 degrees as their preferred AC setting, according to poll results.

Here are some tips on how to save during the warmer months, and what the ideal temperature to set your AC at is, according to New York State Electric and Gas and the U.S. Department of Energy.