The temperature at which most people turn on the heat varies widely, but experts recommend that thermostats be set between 68 and 72 degrees Fahrenheit when people are in the house. When people are sleeping or the house is empty, the recommendation is between 58 and 62 degrees.
Some people think turning the heat off completely is a way to save energy and may wait until the temperature outside drops considerably before turning it back on. However, studies show that reheating a home from a drastically dropped temperature is more expensive than keeping a house at a steady heat. Furthermore, if the temperature outside drops below freezing, there is a risk of bursting pipes.