Although thermostats usually last a long time, eventually they will become faulty and need to be replaced. Don't be intimidated by thermostat
replacement. Almost anyone can do it. Replacing your old thermostat with a digital version can also help you to better control your home's
temperature and lower energy costs.

There are multiple different styles of thermostats, but they all install in a very similar way.

Removing & Installing A New Thermostat

Moderately easy

Things You'll Need:

Replacement thermostat

(It's important to be mindful as to the number and colors of the wires as your doing this).

Cut off power
Before swapping out a thermostat, you will need to cut off the power to the thermostat from your home's fuse box. Many homes have multiple fuse
boxes, so you may need to look at each one to find the switch for the appropriate location. Flip the switch off.

Remove the thermostat
Remove the old thermostat's faceplate. Behind the faceplate you will find screws that secure the thermostat to the wall. Remove the screws and
carefully pull the thermostat off of its mounted position.

Disconnect wiring
Most wiring is mounted to a thermostat with a screw and nut. Remove the screws and slip the wires from under the nut.
Disconnect the colored wiring to the thermostat from the wall.
TIP: Take a piece of tape and label the wires or take a digital picture to avoid confusion later.
TIP: Wrap the wires around a pencil when the old thermostat is removed to prevent them from falling back into the wall.

Install the thermostat mounting plate

Re-connect thermostat wires


Attach new thermostat cover
Viloa! You're done, turn the power back on.

How To Install A Wireless Thermostat

Most home thermostats are hard wired into the furnace. They have a low voltage control wire that runs from the thermostat to the furnace, which is
how the thermostat communicates with the furnace. Wireless thermostats allow more flexibility with the placement of the thermostat. If you want to
relocate the thermostat at a later date, you don't have to run a new wire in the wall if you have a wireless thermostat. You can keep the thermostat
near you to further increase your comfort. It is fairly easy to install a wireless thermostat, and is actually less complicated than a hard-wired one.

Moderatly easy

Things You'll Need:
Wire stripper
Drywall anchors
Cordless drill
Wireless thermostat
Wireless thermostat receiver


Turn off the power to the furnace by turning off the breaker in the circuit breaker panel.

Remove the existing wall thermostat by gently pulling it off until it unsnaps from the wall plate. You may need to remove a few screws before it will pull
off the wall plate.

Disconnect all the thermostat wires from the thermostat and label them according to which terminal they connected to. Remove the wall plate from the

Mount the wireless thermostat receiver wall plate to the wall with drywall anchors and screws.

Connect the thermostat wires to the terminals on the wireless thermostat receiver. Connect them up to the appropriate terminals.

Mount the receiver to the wall plate by pushing it on until it snaps into place, or tighten screws as required.

Turn the power back on to the furnace.

Put new batteries in. For a wireless system, make sure you are using the correct batteries: AA Lithium. If the system is running at inconsistent times,
then you may have inadvertently installed alkaline batteries. Regular batteries will run out of juice quickly in a wireless system, especially if the
backlight is on or used frequently to check the readings.When the thermostat calls for heating or cooling, your furnace should run.

Tips & Warnings

Purchase a programmable thermostat with an "Energy Star Label.  Many modern digital thermostats will help you keep energy costs down.

Although the risk of electrical shock is small, a thermostat should never be replaced without turning the room's breaker switch off.

This won't apply if you are simply replacing a thermostat, but if you will be adding an entirely new one, it is important to note that there are places your
home that a new thermostat should and shouldn't go. The best placement is on an interior wall, about 5 feet above the floor, and in the main living
area. Never place a thermostat near a fireplace, on an uninsulated outside wall, near the kitchen, near an appliance that produces waste heat, or in
direct sunlight that may be coming in through a window at some point during the day.
Replacing A Home Thermostat