More Carbon Monoxide Detectors Required in Ontario in Multi-Level Properties 

If your property contains more than one level, it may be time to schedule a maintenance visit to make sure you’re in compliance with Ontario’s new fire code. 

As of January 1, 2026, the fire code is being updated to require carbon monoxide detectors on each level of a property, not just near sleeping areas. You’ll still need to have the detectors near sleeping areas, but now are required to install one on all floors of the home, including basements and attics – anything that can be considered a different level. 

Which Homes are Exempt? 

The new law is taking any fuel-burning appliance into account. So unless your home is fully electric both for heating and every appliance, it applies to your property. 

Here are some examples of the appliances it is meant to cover:

-Wood-burning stoves and fireplaces
-Gas stoves
-Gas/propane/other fuel home heating systems
-Gas or oil water heater

Carbon monoxide detectors must be installed on each level of the home, not just levels that have one of these systems or appliances. So if you only have a gas stove, you’ll still need a carbon monoxide detector in the basement and attic, even if they don’t contain a fuel-burning appliance or other system. 

It does not apply to a property that is all on one level. If you’re renting an apartment that’s all on one floor, you just need to have your already existing carbon monoxide detectors near sleeping areas.

Maintenance and Replacement Requirements

Each carbon monoxide detector should be completely replaced about once every 5-10 years, so keep a log of when you install it. Monthly tests are recommended, so you should show your tenants how to test them and ask them to do it on a monthly basis. Since they may not do it that often, you should visit your property about once per quarter to test both fire alarms and carbon monoxide detectors. 

What if the Tenant Unplugs/Disables Them?

This is a requirement under the fire code, and is ultimately your responsibility. If your tenants are tampering with fire alarms or carbon monoxide detectors, this is a very serious offense under the fire code. Make sure your tenants are aware of the gravity of their actions, and if the behaviour continues, you can file an N5 for interference with property and safety. You absolutely should evict a tenant who is repeatedly disabling this vital safety equipment, don’t even think twice about it. 

Scheduling Regular Inspections 

To install the extra detectors and for regular inspections, make sure you are delivering written notice to the tenant 24 hours in advance of your visit, and you are only visiting between 8am and 8pm. Your notification should include your reason for entering, date, and time you plan to be there. 

The tenant does not have to be present, but they should be for the initial installation so you can brief them on how to test the monitors, why they are being installed, and why they shouldn’t disable them. Try to schedule your visits well in advance so everyone knows what’s on the calendar. 

Do you want to have someone else manage this and other important property management and maintenance concerns? Get in touch with us! We’re affordable, helpful, and will make sure your property is safe and well-maintained.