Ontario Fire Code requires CO alarms in many existing homes as of Jan. 1, 2026, Clarington says
Ontario Fire Code rules that took effect Jan. 1, 2026 require carbon monoxide (CO) alarms in existing homes, multi-unit dwellings and care occupancies with an attached garage or appliances that use natural gas, propane, oil or wood. The rules require alarms on every level and outside each sleeping area.
The Municipality of Clarington highlighted the requirements in a March 26 community news post as part of what it described as a spring public education campaign. The municipality also cited provincial guidance stating that more than 65 per cent of carbon monoxide-related injuries and deaths in Ontario happen in the home.
Carbon monoxide is an invisible, odourless and tasteless gas, according to Clarington’s post. The municipality said the only way to know it is present is with a working alarm.
Clarington Fire and Emergency Services urged residents to make sure CO alarms are installed in the required locations and working properly. It said tenants should notify the property owner immediately if an alarm is disconnected or not working properly.
Clarington’s post listed maintenance steps: test alarms monthly, replace batteries each year and replace alarm units every seven to 10 years, following the manufacturer’s instructions.
The municipality said a chirping alarm can indicate a low battery or that the unit needs to be replaced.
More information on the updated Fire Code requirements and carbon monoxide safety is available at www.clarington.net/FireCode.