Liability for Smoke and CO Detector Failures in New Brunswick

Tenant Insurance & Liability New Brunswick 4 min read · published March 29, 2026 Flag of New Brunswick

Renting in New Brunswick means relying on safety systems like smoke and carbon monoxide (CO) detectors. When these devices fail, tenants often worry who is legally responsible for maintenance, replacement, and any harm that follows. This guide explains the provincial responsibilities for landlords and tenants, practical steps you can take after a detector failure, and how to document problems so you can report the issue or apply to the tribunal if needed. It uses plain language for renters and points to the official forms and boards you may need to use in New Brunswick.

Who is legally responsible?

Under New Brunswick rules, landlords are generally responsible for providing and ensuring working smoke and CO detectors when a tenancy begins and maintaining them as required by building and fire codes. Tenants must take reasonable care to keep detectors functional, such as replacing batteries when the device is user-serviceable, and reporting faults promptly. If a detector fails because the landlord did not maintain or replace an installed unit, the landlord may be liable for resulting damage or losses. If the tenant disabled or destroyed the detector, the tenant may bear responsibility.

Keep a dated record of detector checks and any communications about faults.

Immediate actions after a detector failure

If an alarm fails or you suspect a detector is not working, act right away. Follow these clear steps to protect health and preserve your rights.

  • Call emergency services if you smell smoke or suspect carbon monoxide exposure and leave the unit immediately.
  • Report the failure in writing to your landlord or property manager and request repair or replacement; keep a copy for your records.
  • Document the issue with photos, videos, and a short dated note describing symptoms, times, and who you told.
  • If the landlord does not respond within a reasonable time, follow up with a formal written notice referencing the health and safety concern.
If you or anyone is unwell from suspected CO exposure, seek medical help and keep medical records.

Repairs, access, and landlord entry

Landlords have a duty to carry out repairs related to safety. Tenants should allow reasonable access for inspection and repair after receiving proper notice. If access is refused for safety reasons, communicate clearly in writing and offer reasonable alternative times. If a landlord fails to arrange repairs, you may apply to the tribunal for an order requiring repair or compensation.

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Evidence and formal applications

Good evidence increases your chances at the tribunal: keep dated messages, photos, a repair log, and any medical or emergency reports. When you apply to the Residential Tenancies Tribunal you will use the official application form and refer to relevant sections of the Residential Tenancies Act in New Brunswick for your claim [1][2].

Detailed records and timely written notices make tribunal outcomes clearer and faster.

Official forms and where to get them

Common official documents tenants use in New Brunswick include the tribunal application form and any prescribed repair or maintenance notice forms. The application form tells the tribunal what you are asking for (repair order, rent abatement, or compensation) and asks for the evidence you will rely on. For example, if your landlord failed to replace a CO detector after you notified them, you would attach dated photos, your written notice to the landlord, and any medical notes to the application form before filing it with the tribunal [3].

Practical example

A tenant emails the landlord about a non-functioning CO detector, attaches a short video showing the device not responding, and waits 48 hours. After no reply, the tenant files the tribunal application with the form, the email thread, and the video. The tribunal then schedules a hearing to consider ordering the landlord to repair and possibly awarding compensation.

Resources for tenants in New Brunswick

Learn more about your obligations and safety rights through trusted guidance pages for renters and landlords. For help understanding what repairs a landlord must provide, see Obligations of Landlords and Tenants: Rights and Responsibilities Explained and for health-specific concerns consult Health and Safety Issues Every Tenant Should Know When Renting. You can also Find rental homes across Canada on Houseme for alternative housing searches while issues are resolved.

FAQ

Who installs smoke and CO detectors in a rental?
Landlords must ensure required detectors are installed at the start of a tenancy; tenants must report faults and perform simple user tasks like battery changes if the device is designed for that.
What if my landlord won’t fix a failed detector?
Document your requests in writing, allow reasonable access for repairs, and if unresolved, apply to the Residential Tenancies Tribunal for an order or compensation.
Can I replace a detector myself and deduct the cost from rent?
Only do this after checking the Residential Tenancies Act and the tribunal's guidance; unilateral deductions can lead to disputes, so file an application instead if the landlord fails to act.

How-To

  1. Document the problem immediately with photos, videos, dates, and names of people told.
  2. Send a written request to the landlord asking for repair or replacement and keep a copy.
  3. Allow reasonable access for inspection and note the times you gave for entry.
  4. If the landlord does not fix the issue, complete and file the tribunal application with your evidence.
  5. Attend any tribunal hearing with your records and be prepared to explain timelines and attempted communications.

Help and Support / Resources


  1. [1] Residential Tenancies information (Government of New Brunswick)
  2. [2] Residential Tenancies Act (New Brunswick)
  3. [3] Application to the Residential Tenancies Tribunal (official form)

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Marie Dubois
Marie Dubois

Bilingual Housing Rights Advisor, Tenant Rights Canada

Marie covers tenant rights across Quebec and the Atlantic provinces in both English and French. With a background in Quebec civil law and residential tenancy, she is a trusted voice on the Tribunal administratif du logement process and francophone tenant rights.