How To Replace A Thermostat? Here’s What You Should Know

how to change a thermostatReplacing a thermostat can seem like a daunting task, but it doesn’t have to be. With the right tools and knowledge, you can easily change your thermostat in no time.

Whether you are replacing an old model or upgrading to a new one, understanding how to replace a thermostat is essential for ensuring that your home stays comfortable all year round.

In this guide, we will explain how to replace a thermostat from start to finish.

We’ll go over the supplies required for the job as well as how to install a thermostat and program the new device so that it works with your heating and cooling system.

By following these steps carefully, you’ll be able to successfully replace or upgrade your existing thermostat with ease!

Steps on How to Replace a Thermostat

Here’s what you need: Before getting started on the installation process, it’s important to ensure that you have all the required supplies such as a screwdriver, pliers and wire cutters.

how to replace a thermostat

  • Step 1:

Depending on the type of thermostat you are installing, you may also need additional supplies such as batteries and mounting screws. Once all necessary supplies are gathered, make sure that your heating and cooling system are shut off before beginning any work.

  • Step 2:

Next, turn off the power to your home’s HVAC system at the breaker box.

  • Step 3:

Remove the screws from the front of your current thermostat and carefully detach it from the wall mount. Disconnect all of its wires being careful to remember how each one was connected.

  • Step 4:

Disconnect all of its wires being careful to remember how the thermostat was wired (labelling them can help).

Securely tighten any screws at this point. If needed, you can use wire caps to cover exposed wiring. Once everything is connected correctly, mount your new thermostat onto the wall plate and reinstall any screws that you removed earlier.

  • Step 5:

Once all of the wires have been disconnected, connect them to the terminals on your new thermostat using the same colours and order that they were disconnected from.


  • Step 6:

Now turn back on power to your HVAC system at the breaker box.


Final Thoughts

Finally, program your thermostat according to its manual instructions so that it works with your home’s heating and cooling system properly. Now you know how to replace a thermostat!

So keep these steps in mind next time you change a thermostat and make sure you follow manufacturer safety instructions and double-check all connections before powering up.

If in doubt, it’s recommended to contact customer service for more specific guidance as necessary.

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