
November 4, 2026
Carbon Monoxide Safety at Home: What Ontario’s New CO Alarm Rules Mean for You
Key Takeaways As of January 1, 2026, Ontario’s carbon monoxide alarm requirements have expanded. Affected homes must now have alarms on every storey, as well as adjacent to sleeping areas. Carbon monoxide (CO) has no colour, smell, or taste, so a working alarm may provide the first warning that it is present. Checking your home’s…







