How to Connect Thermostat Wiring
How to Connect Thermostat Wiring. Putting in a digital thermostat helps control your heating and cooling bill and maintains a more even temperature throughout your home. You can buy thermostats at a local hardware store and, in about an hour, you can improve your home's energy use.
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Turn off power to your thermostat. Not all thermostats have a power supply. For example, non-digital or battery-operated thermostats don't have power supplies. You can flip the breaker for the room if you are unsure.
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Remove the face plate of the old thermostat and unscrew it from the wall.
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Mark all wires before you remove them from the unit. You can do this by writing the corresponding letter on masking tape and taping the wire to the wall. Color-coded wiring doesn't always work with new thermostats, so label them carefully.
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Match your labeled wires to the new unit and attach them in the right places.
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Mount the back plate to wall. If the new thermostat is a different size from the old one, you must drill new holes. Make sure that the new holes are level to prevent any errors in the thermostat operation.
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Install new batteries if needed and program the thermostat.
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Check the thermostat with a level. It must be level to work correctly.
Things You Will Need
- Screwdriver
- Masking tape
- Pencil
- Level
- Thermostat
Tip
Read the owners' manual for programming and specific wiring instructions for your new thermostat.