Ontario homeowners and landlords face stricter carbon monoxide safety rules starting Jan. 1, following a major update to the Ontario Fire Code. The province now requires a working carbon monoxide alarm on every floor of a residential property.
Earlier rules required carbon monoxide alarms only near sleeping areas. The updated regulation extends coverage to every level of a home, including basements and main floors without bedrooms. The change aims to reduce preventable injuries and deaths linked to carbon monoxide exposure inside residences.
The requirement applies to all housing types. Detached homes, townhouses, apartments, and rental units fall under the rule. Any property with fuel burning equipment must comply. This includes gas, oil, or wood burning furnaces, boilers, water heaters, ovens, and dryers. Homes with attached garages also fall under the mandate.
Ontario.ca states carbon monoxide forms when fuels such as gas, oil, or wood fail to burn fully. Common sources include furnaces, fireplaces, water heaters, barbecues, generators, and vehicles left running inside attached garages.
Carbon monoxide poses danger due to silent exposure. The gas lacks colour, smell, and taste. Provincial data shows over 65 percent of carbon monoxide related injuries and deaths occur inside homes. Health Canada reports exposure reduces oxygen delivery through the bloodstream and often affects people before awareness sets in.
Common symptoms include:
Headache
Nausea
Dizziness
Confusion
Drowsiness
Loss of consciousness
Death
A sounding carbon monoxide alarm signals immediate danger. Everyone must leave the home at once. Call 9-1-1 or local emergency services from outside the building.
The fire code permits hard wired, battery powered, or plug in carbon monoxide alarms. Installation must follow manufacturer instructions. Combination units with smoke and carbon monoxide detection remain acceptable. Alarm sounds differ, so households should learn each alert tone.
Buyers should check for Canadian certification marks. Accepted agencies include the Canadian Standards Association, Underwriters Laboratories of Canada, and Intertek Electrical Testing Laboratories.
Carbon monoxide safety involves shared legal duties. Homeowners must keep properties compliant. Landlords must install and maintain alarms in rental units. Annual testing remains mandatory, along with checks after tenancy changes or electrical work. Tenants must report faulty alarms without delay.
Tampering with alarms or removing batteries breaks the law.
Test alarms monthly using the test button. Replace batteries once per year. Replace full units based on manufacturer guidance, often within five to ten years. Chirping sounds signal low battery, end of service life, or emergency conditions. Consult the product manual for guidance.
The updated Ontario Fire Code strengthens home safety across the province and raises awareness of carbon monoxide risks before tragedy strikes.
