Nest thermostat frequently overshoots the set temperature (room gets too hot or too cold)

Safety: No wiring changes are required for basic troubleshooting.

• Verify system settings: In the Nest settings, confirm the correct system type (single‑stage vs multi‑stage, gas vs electric, heat pump vs conventional).
• Adjust Eco and schedule: Review and adjust the schedule and Eco temperature ranges to reduce aggressive setbacks that can cause overshoot.
• Thermostat placement: If the Nest is in a dead zone or near a draft, consider relocating it to a more representative location (this requires rewiring).
• Use Nest Temperature Sensors: For compatible models, add remote Nest Temperature Sensors in key rooms and configure the thermostat to use them for control.
• Professional evaluation: If overshoot is severe, an HVAC professional can evaluate system sizing and airflow issues.