Heater Thermostat Replacement Heater Thermostat Replacement

What You'll Need
Phillips screwdriver
Straight slot screwdriver
Wire cutters/strippers
Drywall anchors
Torpedo level
Drill with correct sized drill bit for drywall anchors

Heater thermostat replacement is one way to save quite a large amount on your heating and cooling bill. The old style dial indicating thermostat just can’t deliver as finely tuned control over your heating and cooling system as a new, digital unit can. Also, digital units are programmable. This means you can program up to 7 days at a time, so the system will have the house warm for you in the morning and turn off by itself overnight. There are many different styles of thermostat available today that you can replace your old dial type with and save lost of money. You may even qualify for an energy rebate by replacing your current heater thermostat with a more energy efficient model. This article will tell you how as well as list the tools you’ll need.

Step 1: Remove the Old Unit

Carefully lift the cover off of your old thermostat and set this aside. There will be between 2 and 3 screws holding the unit to the wall. Remove these screws and save them for future use. Pull the old unit off the wall, and remove the wires from the back of it. If it only controls your central heating, there will only be 2 wires, red and white, most likely. These colors may be different, depending on where you live, but red and white are prevalent throughout the US. If the thermostat also controls your air conditioner or swamp cooler, then there will also be a blue wire. This is very low voltage dc, so there is no need whatsoever to disconnect power.

Step 2:  Check Attachment Points

Chances are your new heater thermostat replacement unit won’t mount to the wall in the same exact places. Place the new thermostat against the wall over the hole the wires come through. Place the level on top to ensure that it is level and mark 3 mounting holes on the wall. Put the new thermostat on the floor and, using the drill and drill bit make holes where you marked using the thermostat back plate. Insert the drywall anchors in these holes.

Step 3: Make Electrical Connections

Now it’s time to make your electrical connections. If your thermostat only controls a furnace, you’ll only have 2 wires. Red goes to positive while white goes to negative. If there is an air conditioner or swamp cooler, the blue wire for it will go to the specially labeled connector for the air conditioner. Make sure these connections are tight.

Step 4: Mount the Unit and Test

Place the unit against the wall and line up the holes in the back plate with the new drywall anchors you installed 2 steps ago. Using either the old screws or the ones that came with the new unit, securely fasten the new unit to the wall and check the alignment with your level. Make sure it is level. Once the unit is securely mounted, it’s time to test it. Read the instructions on how to set the unit for programmed operation.  Following the instructions, ensure the unit turns the furnace on.

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