A smart thermostat takes the testing out of regulating your home’s temperature. It’s a great choice if you have a programmable thermostat that’s installed wrong or lets your HVAC system run when you don’t want it to.
It saves energy by keeping the temperature as low or high as is practical for as long as possible, saving you money on heating and cooling when you’re not home. It warms up or cools down your house determined on when you return.
Minor temperature changes can add up to significant savings over the course of a year—between 12 to 23 percent, according to two leading manufacturers. (Your actual savings depend on the area where you reside, the size of the rooms in your house, and your temperature and humidity settings.)