You can install your Nest thermostat with a trim plate if your old thermostat left a large hole or unpainted part of the wall. The trim plate is optional. To install a Nest thermostat on an electrical junction box, use a metal plate and trim plate.
Important things to know
- Turn off power to your system before exposing wires. This helps protect you and your system from damage.
- Nest screws are self-tapping, so there’s no need to drill into soft materials like drywall or plaster. If you need to drill into harder materials like wood, use a 3/32 or 2.5 mm drill bit.
- Use a screwdriver to connect the thermostat base to the trim plate. High torque power drills can over-tighten the screws and damage the thermostat base. If you need to use a drill, use a low torque setting at slow speed.
- The trim plate is used to cover imperfections left by your old thermostat in the wall. This is snapped together with your thermostat base.
- The steel plate is used together with your trim plate only when installing your thermostat directly into the electrical box.
Specific instructions depend on which thermostat you have.
| Select the thermostat you have: | |||
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Nest Learning Thermostat (4th gen) |
Nest Thermostat |
Nest Thermostat E |
Nest Learning Thermostat (3rd gen or earlier)
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| How to tell which thermostat you have | |||
