Nest thermostat shows incorrect room temperature compared to other thermometers

Note: Perceived temperature errors are often due to placement rather than hardware failure.

• Check location: Ensure the Nest is not above supply vents, near lamps, electronics, or in direct sunlight.
• Seal wall opening: Remove the display and use foam or putty to seal the wire hole in the wall to prevent drafts from affecting the sensor.
• Use Nest Temperature Sensors: If available, pair remote Nest Temperature Sensors and choose one as the control sensor for that room.
• Adjust schedule and Eco settings: Fine-tune your comfort settings to account for minor offsets.

If the reading is off by more than a few degrees consistently, the internal sensor may be failing and the display may need replacement.