Introduction

Save a lot of money! Learn how to remove your old thermostat and install a new programmable thermostat—with no rewiring required.

You can reduce your home’s heating and cooling costs by about 15 percent with a programmable thermostat. It automatically keeps the temperature at a comfortable level when you’re home, but switches to an energy-saving level when you’re away or asleep. Programmable thermostats are available from home centers and hardware stores. The higher-priced models provide more programming options.

Programmable thermostats will work with most gas or oil furnaces and central air conditioners. However, heat pumps, electric baseboards, and a few other systems require special features. Read the package to make sure the programmable thermostat you buy is compatible with your heating and cooling system. If you are unsure, call your local utility or a heating and cooling contractor.

Should you get a Wi-Fi thermostat? Click here to find out more.