Understanding the Freeze Protection feature

The ecobee thermostat has a built in freeze protection feature that will automatically engage the furnace/boiler heat if:

  • the thermostat's internal temperature sensor drops below 41F/5C
  • the thermostat is in Heat mode indicated by a flame icon

When this feature kicks in:

  • the ecobee will set the thermostat itself as the only participating sensor
  • the ecobee will continue to ignore other room sensor temperatures until the temperature rises above 41F/5C

This feature is enabled by default and cannot be disabled.

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