Thermostat Replacement DIY
When you cannot control the heat or cool air in your home, the thermostat might be the one to
blame. This mechanism is what helps you adjust the temperature inside the home, so you can
feel comfortable all year round. Consider replacing it on your own so you can save some money
by not having to hire a professional to do so.
Thermostats can range in price depending on what you’d like. A manual thermostat can cost
between $30 to $60, a digital thermostat will run between $100 to $150 and a smart thermostat
can cost upwards to $300 or $400. Simple tools, as well as the thermostat of your choice is all
you need to replace the old one with the new one, even if it is just a simple upgrade.
Don’t let the wires, breakers, mechanisms and more intimidate you. You want to be able to
replace your thermostat without the fear of the unknown. Many people would pay someone in
the hundreds to replace their thermostat when the whole project can take no more than a half
hour to complete from start to finish.
Save yourself money and consider this an easy-to-do DIY project that allows you to learn a bit
more about how your home works and how you can control the temperature inside it. Replacing
your own thermostat might also make you feel more confident about taking on other house
projects, as well.
1. IMPORTANT - Turn off the power to the AC and furnace
This should go without saying, but sometimes because it is not stated in the directions, people
will skip this step and then things can happen, bad things. Turn the power off and you’re good to
You can either flip them off by using the breaker box or you can turn them off directly (or both!).
A lot of people may not think that this needs to be done but you’re going to be wiring the new
thermostat where the old one was, so you want to protect yourself at all costs. Turning the
power off to the system is the best (and smartest) way to go about replacing it.
2. Lift the face off the old thermostat
This will then give you an idea of what is hiding under it. This is what you’re going to be
replacing with the new thermostat. The best way to remember where all those little wires and
cords go is to take a picture. Use your phone, use a digital camera or even a Polaroid camera if
you have one.
Must remember where the wires go!
3. Disconnect and remove from the wall
Disconnect all of the wires from the system, you may need to use a small screwdriver to do this.
You want to do so carefully since these wires can break and you want to use them again. Once
all disconnected, remove the backing from the wall.
4. Out with the old, in with the new
You will want to add your new thermostat to the place where your old one sat. There’s probably
a nice shadow from having the old thermostat sit there for so long, but you can cover that right
Place the new back to the thermostat in the area and pull the wires through. You can use your
picture to remember which wires go to which letter. For easy reference, usually the red wires go
with the ‘R’ and the green with the ‘G’ and so on.
Some models might have you screw the wires in while some might have you just push them in
until they’re completely connected. You want to make sure that the backing or mount is screwed
into the wall, though, even if the wires do not have to be.
5. Attach the new thermostat face
If you want to change the temperature in the home and actually be able to use the thermostat
then it will need the face. This can simply be added to the brackets on the mount, just like the
old one was sitting on the wall.
Click it into place and then you’re set to use it when you turn everything back on!
6. Turn the AC and furnace back on
In order to use the thermostat, you will have to make sure that you have power running to the
cords that are connected to it. Set the thermostat after you’ve turned the systems back on and
see if it kicks on.
Make sure you turn on the AC and furnace the same way you turned them off - or they’re not
going to work- of course.
You can then configure the settings, set the time and so on with the new thermostat if you have
purchased a digital or smart one. The manual ones just need to be moved to the correct position
and then they don’t need anything more done to them.
A lot of homeowners are considering the move to a smart thermostat since this allows them to
adjust the temperature inside their home from wherever they are through their phone or tablet.
Lower, raise or make the home more comfortable for your pets. The choice is yours.
Knowing how easy it is to replace a thermostat should give you the boost of confidence that you
need to replace the old one that is inside your home. Don’t deal with a broken, outdated or
sometimes working thermostat and save yourself the trouble. Replace that old one today easily
and with just a handful of steps that need to be taken!
Pat yourself on the back, you’ve replaced your own thermostat and can be happy about it. It
wasn’t hard and you took the necessary precautions. Now you can enjoy your new thermostat
until it is time to change it out once again.