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How to Install a Programmable Thermostat

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install a programmable thermostat

How to Install a Programmable Thermostat

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Step 1 of 11
You're working with electricity, so cut the power at the junction box.

You're working with electricity, so cut the power at the junction box.

Step 2 of 11
Remove the old thermostat. Take off the front plate, then disconnect the wires and mounting screws. Be careful not to let the old wires slip back into the wall.

Remove the old thermostat. Take off the front plate, then disconnect the wires and mounting screws. Be careful not to let the old wires slip back into the wall.

Step 3 of 11
Prep the exposed wall. Depending on the size of the new thermostat, you may have to do some touch-up paintwork on the exposed wall space.

Prep the exposed wall. Depending on the size of the new thermostat, you may have to do some touch-up paintwork on the exposed wall space.

Step 4 of 11
Let the paint dry before mounting the new thermostat.

Let the paint dry before mounting the new thermostat.

Step 5 of 11
Install the new thermostat.

Install the new thermostat.

Step 6 of 11
Place the thermostat on the wall and mount it with the included screws.

Place the thermostat on the wall and mount it with the included screws.

Step 7 of 11
Fix the wires. If necessary, cut the wires to the appropriate length.

Fix the wires. If necessary, cut the wires to the appropriate length.

Step 8 of 11
Strip the wires.

Strip the wires.

Step 9 of 11
Connect the wires of the new thermostat to those inside the wall. If you have any concerns which wires to connect, refer to the manufacturer-issued installation instructions.

Connect the wires of the new thermostat to those inside the wall. If you have any concerns which wires to connect, refer to the manufacturer-issued installation instructions.

Step 10 of 11
Install the batteries.

Install the batteries.

Step 11 of 11
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3 Comments
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Screwdriver

Wire cutter

Andrew Tamiya

Couldn't agree more.

Andrew Tamiya 5 months ago

Build.com

Fantastic advice. Thank you, Rex.

(author) 6 months ago

Rex Wholes

Great guide, but for the love of all that is holy don't cut the wires back. Instead push the excess back into the wall. Better long, than wrong.

Rex Wholes 6 months ago

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Andy Foss

Very cool, and great to conserve energy.

Andy Foss 5 months ago

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