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SESK: Stuff Everyone Should Know · sesk.info/home-thermostat-geofence

What does geofencing do on a smart thermostat?

It senses when you leave and sets back the temperature to save energy.

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  1. It locks the thermostat to a PIN
  2. It blocks the Wi-Fi to the HVAC system
  3. It detects you've left and sets back the temperature ✔

Why: Geofencing uses your phone's location to know when you're away. The thermostat lowers heating or cooling while you're gone and can restore comfort as you head home.

Huh, didn't know that: Many smart thermostats learn your temperature preferences and set a schedule that saves energy while you sleep or are away.

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References

Answer: It detects you've left and sets back the temperature. Geofencing uses your phone's location to know when you're away. The thermostat lowers heating or cooling while you're gone and can restore comfort as you head home.

  1. ENERGY STAR: Smart thermostats www.energystar.gov/products/smart_thermostats
    This feature allows your thermostat to detect when you've left for the day to 'set back' your HVAC system
    Checked 2026-10-10.
  2. ENERGY STAR: Smart thermostats www.energystar.gov/products/smart_thermostats
    Many smart thermostats learn your temperature preferences and establish a schedule
    Checked 2026-10-10.

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