Maintenance Guides / HVAC & Air Quality

Replace thermostat batteries

Difficulty: easyTime: 5 minsEst. Cost: $2 - $8

Why it matters

A dead thermostat battery in January means no heat. Many homeowners assume their furnace broke when the thermostat just needs $3 of batteries.

Stop forgetting to do this.

HomeOS generates a personalized maintenance schedule so you never miss another replace thermostat batteries.

How to do it

  • 1

    Remove the thermostat from the wall mount.

  • 2

    Find the battery compartment (usually on the back).

  • 3

    Replace with fresh alkaline batteries.

  • 4

    Remount and confirm the display powers on.