Deficiency

A deficiency is a recorded finding that a fire alarm device, component or function does not meet the standard, the design or its intended function, and it creates an obligation on the building owner to have it corrected. It is the strongest of the finding types on a CAN/ULC-S536 inspection report or a CAN/ULC-S537 verification report, and it is deliberately separate from a recommendation, which is advice the owner may decline. Neither Ontario code defines the word: the definitions sit inside the 2019 editions of the standards, which are paywalled, and Fire Code Article 6.3.2.2.(4) requires only that the record state whether each device, component and circuit is in proper working order.

What counts as a deficiency

Wider than "it is broken." A public presentation on the 2019 standards delivered to the Building Officials Association of British Columbia in May 2023, authored by ULC's parent, sets out the S537-19 definition as covering four situations, which we paraphrase rather than reproduce: a device or function that does not operate as intended; one installed where it cannot safely be reached for service, testing or maintenance; one installed in an environment that does not match the operating conditions documented for it; and one mounted in an orientation or location the manufacturer's installation instructions do not specify.

Three of those four can apply to a device that works perfectly on the day you test it. A working heat detector over a loading door in an unheated bay, or a duct detector you need a lift and a permit to reach, is a deficiency. That is the part most people miss, and it is why "everything tested fine" and "no deficiencies" are not the same sentence.

Which standard and which code provision

The term belongs to the standards, not the codes. It appears on both the CAN/ULC-S536 inspection and test report and the CAN/ULC-S537 verification report. Ontario references the 2019 editions of both, at Fire Code Table 1.2.1.A and Building Code Table 1.3.1.2.

The Ontario Fire Code never uses the word as a defined term for fire alarm work. Article 6.3.2.2.(4) requires a record of each device, component and circuit indicating whether it is in proper working order, and Article 1.1.2.2 governs how long that record is kept. The obligation to actually rectify runs to the owner under the general duty scheme of the Fire Code, not through an article that names deficiencies.

Who records it, and who has to fix it

The person qualified under Fire Code Division C, Article 1.2.1.2 records it. The owner owns it. Nothing in Ontario requires a contractor to report a deficiency to the fire department.

Alberta does. Calgary Fire Marshal Bulletin 2025-001 requires service companies to report deficiencies within 10 business days, after which a Fire Safety Codes Officer contacts the owner to make sure repairs happen, and it states that deficiencies affecting system operation require immediate reporting and may require emergency repairs or a fire watch. We could not locate an Ontario equivalent, so treat reporting duties as jurisdiction specific and ask your AHJ.

Deficiency, recommendation, and the missing third term

The site previously recorded that the 2019 editions distinguish three terms: Deficiency, Recommendation and Remark. On the evidence we can reach, that is wrong. The BOABC presentation states plainly that the term "Remark" has been deleted and replaced with "Comments" in S537-19. Certi-Fire's public page on S537-19 defines only two terms, deficiency and recommendation, and its description of the report sections ends at deficiencies and recommendations with no remarks block. ULC Standards' own training catalogue lists a course called Deficiencies and Recommendations in CAN/ULC S536-19 and S537-19, naming two.

Two limits on that finding. The sentence in the presentation names S537 specifically; the section it sits in covers S536 and S537 together and states both forms are mandatory, but the S536 position is inference, not text. And we cannot confirm what the replacement block is headed on the printed form, because the forms live inside the paywalled standards.

What goes wrong

Downgrading a deficiency to a recommendation to keep a report looking clean. It shifts a legal obligation off the owner and onto nobody, and it is visible the moment anyone compares two years of reports.

Leaving deficiencies open across cycles with no closeout. Fire Code Article 1.1.2.2.(1) requires at least the most recent record and the one before it to be retained at the building, which makes a repeated deficiency easy to find.

Writing a deficiency with no location, address or zone. See what an S537 verification involves.

Fire Alarm Academy provides educational content only. It does not confer any certification, licence or credential, and it is not affiliated with, endorsed by, or accredited by the Canadian Fire Alarm Association, the Electrical Contractors Association of Ontario, ULC Standards, UL Standards and Engagement, CSA Group, the Electrical Safety Authority, any authority having jurisdiction, or any manufacturer. Always work from the edition of any standard adopted by your authority having jurisdiction.