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Effective Jan.1, 2026, changes to the Ontario Fire Code will improve early detection of carbon monoxide in homes. 

Milton Fire & Rescue Services is reminding residents that updated carbon monoxide (CO) alarm requirements will take effect on Jan. 1, 2026, to enhance home safety and protect against carbon monoxide poisoning.  

Carbon monoxide is a colourless, odourless gas that can be deadly. Working CO alarms, when properly installed and tested regularly, can provide early warning and help save lives. 

What’s changing 

The new requirements apply to a variety of homes, including detached or semi-detached houses, townhouses, and cottages that contain any of the following: 

  • A fuel-burning appliance, such as a furnace, water heater, gas stove, or wood stove 

  • A fireplace 

  • An attached garage 

  • Heated air supplied by a fuel-burning appliance located outside the home, including: 

    • Outdoor wood furnaces or boilers 

    • Pellet stoves in detached buildings 

    • Propane or natural gas furnaces in outbuildings 

    • External boiler systems connected to home heating 

Where CO alarms must be installed 

Under the Ontario Fire Code, CO alarms are required: 

  • Near every sleeping area, and 

  • On every storey of the home, including levels without bedrooms 

Requirements for landlords and building owners 

Additional requirements apply to owners, landlords, and operators of: 

  • Multi-unit residential buildings (e.g. apartment buildings)  

  • Care occupancy buildings (e.g. group homes, care facilities, etc.). 

For more information about carbon monoxide safety, please contact Milton Fire & Rescue Services.