How to Install a Programmable Thermostat

Learn how to install a programmable thermostat in these simple steps.

A programmable thermostat is great for two important things: saving money and conserving energy.

Depending on the model you buy, you can program day and night temperatures. There may even be a setting for every day of the week. You’ll be more comfortable with your heating and cooling bill, too.

And if you have a smart thermostat, you can connect it to your home’s Wi-Fi. Then, you can use your smartphone to adjust the temperature from anywhere.

Read the instructions that came with your new unit before starting the installation. Manufacturer instructions may vary for each model.

To get started, follow these basic steps from Blain’s Farm & Fleet.

1. Remove the old unit

Turn off the power supply to the thermostat. Remove the existing thermostat, including the wall plate. Disconnect the wires.

2. Label the wires

Your thermostat will have two or four wires, depending on whether your heating and cooling systems are separate or one unit.

Label the wires with masking tape, noting where they were attached on the old thermostat. Secure them (tie into a loop or tape them to the wall) to keep them from falling back into the wall.

3. Drill mounting holes

Install the new wall plate, if there is one. You may need to drill new holes for the new model.

Use a level to mark the mounting holes. Use drywall anchors, if necessary.

4. Connect the wires

Connect the wires as directed by the instructions that come with your particular unit. Follow these instructions carefully. Install batteries, if needed.

5. Mount the new unit

Mount the unit to the wall plate. Restore the power, and program the new thermostat as directed.

If you come home from work at 5pm, make sure your heat kicks back on around 4:30pm. So it’s nice and toasty when you walk in the door. But you can breath easy that you didn’t keep an empty home too warm while you were away.

And in the warmer months, you can do the same thing with air conditioning.

Installing a programmable thermostat is just one way to conserve energy and save money.

For more home improvement tips and how-tos, check out our DIY Projects Blog.