As of January 1, 2026, Ontario’s Fire Code requires updated carbon monoxide (CO) alarm placement in rental properties. If your rental unit has fuel-burning appliances or an attached garage, CO alarms must now be installed on every floor of the unit, not just near bedrooms.
What’s Required in Rentals
CO alarms must be installed:
On every storey, including basements
Outside all sleeping areas
In any unit with an attached garage
Fuel-burning sources include furnaces, water heaters, stoves, fireplaces, and gas dryers.
Landlord Responsibilities
Install and maintain all required CO alarms
Ensure alarms are CSA or ULC certified for Canada
Replace alarms when they expired
Address tenant-reported issues promptly
Tenants are responsible for not disabling alarms, but compliance ultimately rests with the landlord.
Why This Matters
Non-compliance can result in:
Fire Code violations and fines
Increased liability risk
Insurance issues
Problems during inspections or property sales
If an Alarm Sounds
Tenants should evacuate immediately and call 911 from outside the unit. If you own rental property, now is the time to confirm your units meet the updated Fire Code requirements.
