Heating and cooling is the largest energy expense for most homes, accounting for over 50% of energy use.

The performance of your thermostat can be affected by location, sensing the heat or frigidness of the following, causing your system to cycle unnecessarily and be less efficient.

External factors

Nearby heating and cooling registers, direct sunlight, drafts, doorways, windows and skylights can affect your thermostat.

Front of a home with yard in summer

Internal factors

Electronics and appliances that put off heat, such as TVs and lamps, can also affect your thermostat.

Person setting a thermostat to 78 degrees Fahrenheit

Optimal settings can help ensure that you save energy and save on your electric bill.


68ºF in the winter while you’re awake; and lower while you’re asleep or away from your home.

House covered in snow


78ºF in the summer only when you are at home and need cooling; and higher when away from home.

Row of houses in summer