How to Install a Programmable Thermostat in your Home
admin • February 3, 2012

Programmable thermostats are one of the best ways to save on heating costs, especially if you have a hard time remembering to turn down the heat in your Hubbard home. Installing a programmable thermostat will allow you to set the times you want the heat turned up or down. Not only will this make heating your home more consistent and save energy, but it will also allow you to tailor your heating needs to your schedule.

For instance, you can set the thermostat to turn on before you get up in the morning so that the house is already warm when you get out of bed, and conversely, set it to turn down after you go to bed or leave the house for work. Depending on the brand and setting options, programmable thermostats are relatively inexpensive and easy to install.

Although all styles are slightly different, here are some basic instructions that show you how easy it is to install a programmable thermostat.  Remember, this is only a general guide; always check the instructions inside the packaging of your new thermostat before you install it, or check with an electrician.

1. Remove the Old Thermostat

Before you remove the old thermostat, check to see where it’s mounted. If it’s mounted to an electrical box, the voltage used to power the old thermostat may not be compatible with the new one. Ask a certified electrician or heating technician if you aren’t sure.

CUT THE POWER TO THE HEATING SYSTEM TO AVOID ELECTRIC SHOCK. You should always turn off the main power supply to your heating system before installing any new thermostat. If you aren’t sure how to do this, ask your HVAC contractor. Once you unscrew the mounting plate for the old thermostat, just unhook the wires. Don’t throw an old mercury controlled thermostat. You should ask your local waste management facility how to properly dispose of mercury products.

2. Locate all Wires

Wrap the loose wires around a pencil to keep the wires from falling back into the wall. Identify and label each corresponding wire with a letter (do not use color coding since this is not always accurate). Strip the plastic off the ends of the wires about ¼ inch if you need to.

3. Install and Insulate Wallplate

If the area around the new wallplate is larger than the plate, insulate the hole with non-flammable insulation. Take the wallplate off the programmable thermostat and hold it against the wall to mark the screw holes with a pencil. Pull the wires through the large opening at the bottom and screw the plate to the wall.

4. Wiring

Make sure you are comfortable with wiring before you attempt to do any electrical installations. Check the manual for your programmable thermostat for instructions on wiring that specific model. In general, you’ll want to make sure you match the wire labels with the corresponding terminals on the thermostat. Sometimes there will be extra wires that aren’t needed. Always test it before completing the installation. Don’t forget the battery!

5. Install the Faceplate

Once you have it wired correctly, all you need to do is align the brackets on the faceplate with the corresponding slots on the wallplate and fasten the faceplate to the rest of the mounting. Lastly, tighten the screw at the bottom of the thermostat to hold it in place.

If you have any questions regarding programmable thermostats, give The Clean Air Act a call.

A thermostat with a smiley face on it is covered in a knitted hat.
By Rodger Brown May 5, 2025
Learn four common signs that you need a new gas furnace.
The inside of an electric furnace is shown with the door open.
By Rodger Brown April 21, 2025
Learn the early warning signs can help you avoid a complete breakdown and keep your home warm, safe, and energy-efficient throughout the colder months.
A woman and a boy are playing with a dog on a couch.
By Rodger Brown April 7, 2025
Learn the top benefits of getting ahead of AC repairs before minor problems turn into major headaches. The post What Are the Benefits of Taking Action Early on AC Repairs? first appeared on Clean Air Act Inc..
A person is holding a remote control in front of an air conditioner.
By Rodger Brown March 24, 2025
Learn about the key steps involved in a ductless heat pump installation and why professional expertise makes all the difference. The post Steps for Installing a Ductless Mini Split System first appeared on Clean Air Act Inc..
A close up of a humidifier in a room with a plant in the background.
By Rodger Brown March 10, 2025
Learn about the benefits of a humidifier and how one of these unique systems can benefit your family.  The post What Are the Benefits of a Whole-House Humidifier? first appeared on Clean Air Act Inc..
The Clean Air Act Technician is holding a thermometer in front of a furnace.
By Rodger Brown February 24, 2025
Learn about three repairs that we get calls for when it comes to gas furnaces and the signs of each one. The post 3 Common Gas Furnace Repair Needs first appeared on Clean Air Act Inc..
Show More