1. Homeowner Care
  2. General Maintenance

Smoke & CO2 Detectors

Smoke and Carbon Monoxide Detectors


  • Never remove the smoke or carbon monoxide detectors
  • Replacing batteries is recommended twice per year to keep them fresh. A good rule of thumb is to change them when updating your clocks for daylight savings time
  • Some units have a built-in lithium battery that does not need to be changed over the life of the unit
  • Manufacturer recommends replacing units every 10 years

How to test detectors and change batteries:

  1. Push the button on the unit once to test; the unit will chirp and/or begin speaking to you, along with the rest of the units in the house (they are hard-wired together)
  2. Push and hold the button to turn the unit off; you can do this after testing or in case you accidentally set it off while cooking
    1. Access the batteries by sliding the panel over Replacing batteries is recommend twice per year
    2. You will need a 9-volt for smoke detectors and two AA batteries for smoke/carbon monoxide detectors 
  3. Once batteries have been swapped, slide the panel over to secure the batteries

Maintenance and cleaning:

  • Once a month, remove the unit from the mounting bracket and vacuum the alarm cover and vents with a soft brush attachment; reinstall immediately after cleaning and then test using the test/reset button
  • Do not spray any detergents or solvents into the unit
  • Do not paint the unit