Fire Alarm Inspection & Testing
in Oshawa
The annual inspection that proves, to your insurer and the fire department, that every device in your building works. Performed by Harex since 1983. Performed from the Harex base in Oshawa.
- JURISDICTION
- DURHAM REGION
- MUNICIPALITY
- City of Oshawa
- AUTHORITY
- Oshawa Fire Services
- PREVENTION DIV.
- Fire Prevention Division
- COVERAGE
- ALL SERVICES
- FROM OSHAWA BASE
- Home base
- FILE
- HRX-1983 / OSHAWA
Fire Alarm Inspection & Testing in Oshawa
Harex provides every service in Oshawa: inspection, testing, repair, installation and verification, with the 24-hour emergency line answered for Oshawa buildings at any hour.
Oshawa Fire Services issues a compliance letter for a building only after every required inspection has been completed and the property is in compliance, so the inspection record is the thing that unlocks the letter.
Oshawa is the largest municipality in Durham Region, with a manufacturing history that left it a stock of older industrial buildings and an economy now built around education and health sciences. Oshawa South and Southeast sit inside two of the Region's Provincially Significant Employment Zones.
Harex forwards every completed fire alarm inspection & testing report for a Oshawa building to Oshawa Fire Services, so the building is on record as maintained with the department that would otherwise be the one to notice a lapse. The Harex base is in Oshawa, so there is no travel to bill.
Harex also provides fire alarm inspection & testing in Whitby, Courtice and Clarington.
Who legally needs it
The Ontario Fire Code requires it for industrial, commercial and multi-tenant buildings with a fire alarm system, and Harex inspects to it across Durham Region. Your insurer requires current records to renew. The fire department's inspection division runs a rolling schedule, and a missed inspection is how a 30-day order to comply begins. Fines typically run $5,000 to $30,000, and the statutory maximums go far higher.
Frequency
Annual testing is the baseline for most Durham Region buildings Harex inspects, with monthly checks in between. Since January 1, 2026, annual inspections must follow CAN/ULC-S536:2019. Work typically sits under a three-year contract: a technician who knows your building, a locked rate, no lapses.
What we test
Every device. S536 does not permit sampling. Harex tests all of them. If a quote seems suspiciously cheap, ask whether all devices are tested.
- CONTROL PANEL
- PULL STATIONS
- SIGNAL DEVICES
- SMOKE / HEAT DETECTORS
- ANCILLARY DEVICES
- BATTERIES & POWER
What you receive
A report accepted by your insurer and the fire department: deficiencies listed with the Fire Code section that makes each one law, and the work required to close them. We forward inspections to the AHJ, so your building is on record as maintained. See what the report looks like →
If you have deficiencies
Most are corrected by Harex in-house: repairs, replacement and verification, quoted off the deficiency list. Already holding an order to comply? Start here →
Common questions
Terms of work in Oshawa
- Authority having jurisdiction
- Oshawa Fire Services, City of Oshawa. Fire Prevention Division.
- Coverage in Oshawa
- All services.
- Governing standard
- CAN/ULC-S536. Annual → monthly · 3-yr contract.
- From the Oshawa base
- Home base.
Area facts reviewed September 2026 · sources on file
What clients say
across every platform
“Harex has looked after our alarm and extinguishers for years. They come when they say they will, and the report is in our hands before the insurer asks for it.”
“We were told the whole system had to be replaced. Harex asked the fire department why, in writing, and the scope came back a fraction of what we had been quoted.”
“We had thirty days and a list we did not understand. They went through it item by item, told us what was actually required, and we passed the re-inspection.”
“Four buildings, one schedule, one set of reports. I stopped chasing three different contractors for paperwork the month we switched.”
“Panel went into trouble on a Saturday night. Somebody answered, walked our supervisor through it on the phone, and had a technician there before the shift started.”
“We were told the whole system had to be replaced. Harex asked the fire department why, in writing, and the scope came back a fraction of what we had been quoted.”