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Attention, homeowners: Don't pay another repairman until you check out this video series on simple repairs you can make yourself.
You Will Need
- A Phillips screwdriver
- Masking tape
- A pen
- A new thermostat
- A level
- A drill with a 3/16-inch bit
- Drywall anchors
- A hammer
Turn off the main electrical power switch to the heating and air conditioning unit.
Pry the cover from your old thermostat. Unscrew the wall mount to separate the thermostat's wiring from the wall.
Using masking tape, label each wire as you disconnect it from its terminal connector. Then slip the sub-base over the wires and remove it from the wall.
Pull the wires through the feed hole in the new thermostat and place it flat against the wall. Use a level to position it, and then mark the top, sides, and screw holes with a pen.
Drill the screw holes and hammer the drywall anchors into the holes until they are flush with the wall.
Carefully connect each wire to the new terminal and screw the new thermostat sub-base to the wall.
Replace the outside cover of the new thermostat and restore power to the furnace.