Carbon monoxide (CO) is a dangerous gas that is invisible, odorless, and tasteless, making alarms the only way to detect it. Carbon monoxide alarms are just as important as smoke alarms and provide early warning of a serious hazard, even when there is no fire.
Starting January 1, 2026, changes to the Ontario Fire Code require additional carbon monoxide alarms in homes with fuel-burning appliances, fireplaces, or attached garages. These updates are being made across the province to improve household safety and prevent incidents caused by carbon monoxide exposure.
The new regulations require:
- A carbon monoxide alarm adjacent to every sleeping area in your home; and
- A carbon monoxide alarm on every storey that does not contain a sleeping area (for example, a main floor or basement).
These requirements apply to all residential occupancies, including existing homes. Even if your home already has a CO alarm, you may need to add more to comply with the updated Fire Code.