CO Alarms

Having certified, working, properly installed and maintained alarms will warn you of rising CO levels, giving you time to take potentially life-saving actions.

Ontario laws require smoke and carbon monoxide alarms in your home

Did you know?

Unlike smoke, which rises to the ceiling, CO mixes with air. If a combination smoke/carbon monoxide detector is used, it should be located on the ceiling to ensure it will detect smoke effectively.

Things to know about CO Alarms

A CO alarm works much like a home smoke alarm and beeps loudly when the sensors detect carbon monoxide. When choosing a CO alarm, look for a certification mark (CSA, ULC or other recognized certification body). This shows that the alarm met recognized standards for safety. CO alarms should be installed as per manufacturer’s instructions. Follow the same manufacturer’s maintenance procedures as you would with smoke alarms.

Things to know about CO Alarms

Where to install CO alarm:

    • On every level of your home or cottage
    • In your RV and boat cabin
    • Near sleeping areas
    • In your boathouse

Do not install CO alarms here:

    • Windows or vents
    • Bathrooms
    • Heating or fuel-burning appliances
    • Smoke alarms (unless a combination alarm)

Alarm testing

    • Remember to test your CO alarm and smoke alarm once a month by pushing the test button on the unit.
    • Replace batteries once a year, including back-up batteries for plug-in alarms.
    • A good habit is to change the batteries every fall or spring when you change your clocks.

Like most things, CO alarms wear out over time. Check the manufacturer’s instructions to find out when your particular unit should be replaced (usually after 7-10 years for CO alarms and 10 years for smoke alarms).

Remember – you need both: an inspection and alarms

Alarm Yourself

Test once a month. Change batteries annually. Replace when required.