Fire Services · Sprinklers

Sprinkler inspection & testing for commercial buildings

Licensed 427A sprinkler fitters performing the full NFPA 25 cycle on wet, dry pipe, pre-action, and deluge systems across the GTA.

contact us
Call (905) 495-6282

NFPA 25 chapter 8

Fire-pump testing — weekly, monthly, annual

If your building has a fire pump (any sprinkler system above a few storeys typically does), NFPA 25 Chapter 8 sets the testing cycle. CAINtech handles the full cycle: weekly no-flow run-tests, monthly visual checks, and the annual full-flow flow-meter test that the AHJ wants documented.

  • Weekly no-flow test — verify the pump starts on demand, runs for the prescribed duration, and shuts down correctly. Documented in the on-site log.
  • Monthly visual inspection — controller indicators, jockey-pump pressure-switch behaviour, valve positions, pump-room conditions.
  • Annual full-flow test — flow at 100% and 150% of rated capacity using flow meters or the pump test header. Performance curve plotted, compared against the manufacturer’s acceptance curve.
  • Electric drivers, diesel drivers, and controllers — all covered. Diesel pumps include fuel-system, battery, and exhaust-system checks.
  • Annual report to AHJ format — same NFPA 25 reporting we use for the rest of the sprinkler inspection cycle.

Commercial sprinkler systems in Ontario need quarterly gauge and valve checks, monthly head visual inspections, annual main drain and water-flow alarm tests, and multi-year specialized testing under NFPA 25 and the Ontario Fire Code. CAINtech’s licensed sprinkler fitters perform the full inspection cycle for wet, dry pipe, deluge, and pre-action systems across commercial buildings in the GTA. Fixed-fee annual contracts available. 24/7 emergency line for sprinkler faults.

NFPA 25

Governing standard

427A

Sprinkler Fitter

Quarterly

Inspection cycle

24/7

Emergency response

Routine Cycle

—NFPA 25 weekly checks (dry pipe priming, electric pump churn)
—Monthly gauge + control valve visual inspection
—Quarterly water-flow and supervisory device testing
—Annual main drain test + water-flow alarm test
—Annual sprinkler head, hanger, and FDC inspection
—Backflow preventer annual test under CSA B64

Multi-Year & Specialty

—3-year obstruction investigation
—5-year internal pipe inspection
—12-year sprinkler head testing (sampling per NFPA 25)
—15-year obstruction investigation on dry systems
—Antifreeze loop testing where applicable
—Wet, dry pipe, pre-action, and deluge system service

What is included in commercial sprinkler system inspection?

A full NFPA 25 inspection cycle covers the sprinkler system and its supporting infrastructure across several intervals. Annual inspection includes the main drain test, water-flow alarm test, fire department connection inspection, visual inspection of accessible sprinkler heads, hangers and supports check, control valve verification, backflow preventer inspection where applicable, and antifreeze loop testing where present.

Quarterly inspection covers gauges, valve positions, water-flow and supervisory devices, and dry pipe valve enclosures. Monthly inspection is a visual check of gauges and control valves. Weekly inspection applies to dry pipe systems and electric fire pumps. Multi-year tests include 3-year obstruction investigation, 5-year internal pipe inspection, 12-year sprinkler head testing, and 15-year obstruction investigations on dry systems, each where indicated.

How often must commercial sprinkler systems be inspected in Ontario?

FrequencyWhat gets checkedPerformer
WeeklyDry pipe priming water level, fire pump no-flow testBuilding staff or technician
MonthlyGauges, control valve positionsBuilding staff
QuarterlyWater-flow devices, control valves, alarms, dry pipe enclosuresLicensed technician
AnnualMain drain, water-flow alarm, FDC, sprinkler heads, hangers, full system testLicensed technician
3 / 5 / 12 / 15 yearsObstruction investigation, internal pipe inspection, head testingLicensed technician

Which standards apply?

This standard establishes the minimum requirements for the periodic inspection, testing, and maintenance of water-based fire protection systems.

NFPA 25, Section 1.1.1

NFPA 25 is the inspection, testing, and maintenance standard. NFPA 13 is the installation standard for new systems. NFPA 20 covers fire pumps. The Ontario Fire Code (O. Reg. 213/07, amended by O. Reg. 87/25) adopts NFPA 25 for sprinkler maintenance in Ontario commercial buildings, and the CSA B64 series applies to backflow preventer testing.

Who is qualified: sprinkler inspection in Ontario requires a licensed Sprinkler Fitter 427A Red Seal technician under NFPA 25. Backflow preventer testing additionally requires CSA B64 certification. CAINtech holds both.

Commercial sprinkler manifold with valves and pressure gauges in mechanical room

Wet versus dry pipe systems — what is the difference?

01
Wet pipe systemsThe most common. Pipes are filled with water under pressure, so water flows immediately when a head activates.
02
Dry pipe systemsUsed in unheated areas such as parking garages. Pipes hold pressurized air that releases before water flows — slower but does not freeze.
03
Pre-action systemsRequire two events (detection and head activation) before water flows. Protect data centres and archives.
04
Deluge systemsKeep all heads open and flow water from every head at once. For high-hazard areas.

CAINtech services all four types.

How does CAINtech handle deficiencies?

Critical deficiencies require immediate action: a closed control valve, a non-functional water-flow alarm, a damaged head leaking water, or a backflow preventer failing certification. Where repair cannot happen immediately, the building may need a fire watch. Non-critical deficiencies such as paint on a head or a missing FDC cap are tracked and scheduled. Multi-year deferred items such as internal pipe corrosion are flagged with a recommended timeline. Each deficiency is photographed, classified, and entered into a tracked log.

Why CAINtech

Licensed fitters, AHJ-format reporting, every visit

Licensed 427A sprinkler fitters on every visit — the Ontario Red Seal trade qualification, current.
Reports in the NFPA 25 format your AHJ expects, with deficiency severity classifications.
One accountable team across every fire system in your building.

Frequently asked questions

How often must commercial sprinkler systems be inspected in Ontario?+
Quarterly inspections by a licensed technician, monthly gauge and valve checks by building staff, weekly checks for dry pipe systems and electric fire pumps, plus an annual full inspection including main drain test, water-flow alarm test, FDC inspection, and sprinkler head visual. Multi-year tests apply at 3, 5, 12, and 15-year intervals. All under NFPA 25 and the Ontario Fire Code.
Who is qualified to inspect commercial sprinkler systems in Ontario?+
A licensed Sprinkler Fitter 427A Red Seal technician working under NFPA 25. Where backflow preventers are involved, the tester needs CSA B64 certification.
What is a main drain test and why is it required?+
The main drain test verifies water supply pressure at the system riser. The technician opens the main drain valve and measures static and residual pressure. A significant drop in residual pressure compared to historical readings can indicate a partial obstruction in the water supply. Required annually.
What does supervised mean for a sprinkler control valve?+
A supervised control valve has an electronic tamper switch monitoring its position. If someone closes the valve, the tamper switch sends a supervisory signal to the fire alarm panel and the monitoring station.
My building has a backflow preventer. Is that part of sprinkler inspection?+
Yes, in most cases. Backflow preventers on sprinkler systems require annual testing under CSA B64 by a certified tester. We perform this as part of the annual sprinkler inspection where the system is configured this way.
What happens during sprinkler testing, will my building flood?+
No. The main drain test flows water through the drain, not the sprinkler heads, and the water-flow alarm test trips the alarm device without activating heads. Sprinkler heads themselves only activate when exposed to fire-level heat.
My building has paint on the sprinkler heads. Is that a problem?+
Yes. Paint can slow or prevent sprinkler head activation. NFPA 25 requires painted heads to be replaced. The annual inspection identifies these and quotes replacement.
What is the difference between sprinkler inspection and sprinkler installation?+
Inspection under NFPA 25 is the maintenance and testing of existing systems. Installation under NFPA 13 is the design and installation of new systems. CAINtech provides inspection; we can recommend partner contractors for new installation work.
How long does a typical sprinkler inspection take?+
A small commercial office sprinkler system typically takes 2 to 4 hours. A multi-storey condo or industrial facility can take 1 to 2 days depending on system size and accessibility.
Do you service sprinkler systems outside the GTA?+
Our standard service area covers the GTA and surrounding regions — Peel, Toronto, York, Durham, Halton, Hamilton, Dufferin, and south Simcoe (Barrie to Oshawa to Hamilton). For larger projects we travel further across Ontario.

Get your sprinkler quote

Send us your system type (wet, dry pipe, pre-action, deluge) and approximate building size. Fixed-fee annual quote back the same business day. Mon to Fri, 7:00 AM to 3:30 PM.

contact us