Thermostat temperature reading is inaccurate compared to other thermometers

Safety: No high‑voltage work is required for this adjustment.

• Verify location: Ensure the thermostat is away from exterior doors, windows, direct sunlight, and electronics that emit heat.
• Clean vents: Use a soft brush or compressed air to clear dust from the thermostat’s air intake vents.
• Compare readings: Place a reliable digital thermometer near the thermostat and compare readings after 30 minutes.
• Adjust temperature offset: In the thermostat settings, use the temperature calibration or offset feature to correct minor differences (typically ±3°F).
• Replace thermostat if error is large: If the reading is off by more than the offset range, the internal sensor may be defective and the thermostat should be replaced.