Trusted Commercial Boiler Repair Experts in Toronto, Mississauga & Scarborough
Fast, professional commercial boiler repair and installation across the GTA with a $99 diagnostic, fully credited toward your repair.
Professional Commercial Boiler Services
Accurate diagnostics and honest recommendations for commercial buildings, hotels, medical facilities, industrial sites, and multi-unit properties.
- Toronto
- Mississauga
- Scarborough
- Surrounding
Boiler Not Heating Properly
Insufficient heat output, uneven heating, or failure to reach set temperatures due to burner, heat exchanger, or control issues.
No Hot Water or Steam
Failed circulation pumps, valve issues, pressure problems, or internal blockages affecting hot water or steam delivery.
Boiler Shuts Down Unexpectedly
Safety lockouts, sensor faults, ignition failures, or pressure irregularities triggering automatic shutdowns.
Leaks or Pressure Loss
Water leaks from valves, seals, pipes, or expansion tanks leading to pressure drops and system inefficiency.
Unusual Noises
Banging, rumbling, or whistling sounds caused by scale buildup, trapped air, or component wear.
Error Codes or Control Failures
Electronic faults, sensor errors, or control board issues preventing normal boiler operation.
Same-Day Boiler Repairs Across the GTA
Trusted commercial boiler repair and installation throughout the Greater Toronto Area, with same-day service available.
- Toronto
- Mississauga
- Scarborough
- Surrounding
If your city is not listed, call us and we will confirm same-day service availability.
Commercial Boiler Brands We Service
We service all major commercial boiler manufacturers and system types across Toronto and the GTA.
- AERCO
- Bosch
- Burnham Commercial
- Cleaver-Brooks
- Fulton
- Hurst
- Laars
- Lochinvar
- Miura
- Navien Commercial
- Peerless
- Raypak
- Slant/Fin
- Viessmann
- Weil-McLain
Factory-trained commercial boiler technicians.
Don’t see your boiler brand listed? Call us, we likely service it.
How Our Commercial Boiler Repair Works
Fast, Simple, Stress-Free Service
Book Your Appointment
Call or book online. Only $99 diagnostic fee, fully credited toward repair or installation.
1
On-Site Inspection
An experienced technician inspects burners, heat exchangers, pumps, valves, controls, venting, and safety systems.
2
Upfront Pricing
Clear, upfront pricing provided before any repair or installation begins.
3
Repair & Final Testing
We complete the work and fully test heat output, pressure stability, safety controls, and system performance.
4
No surprises. No pressure. Just professional commercial fryer service.
Emergency Commercial Boiler Repair Near You
Fast emergency commercial boiler repair to restore heat, hot water, and safe operation.
- Rapid diagnosis for heating and pressure failures
- Burner, ignition, and gas valve repairs
- Circulation pump and control system troubleshooting
- Leak detection and pressure stabilization
- Same-day emergency service across the GTA
What Our Clients Say
“I received great rate and service from certified mechanical for my boiler, highly recommended , thanks”
Henry Labayane.
“Anthony came to fix our boiler , That other company was not able to fix, he did for less than 1 hour , and our heat back to normal again , thanks Anthony .”
Resie Marcellano.
“Fast, Relaible, Excellent Service and Fair Pricing. Thanks Anthony and team!”
Daryl Schembri.
“Great service. Polite, and focused on the task at hand. Highly recommend.”
Justin Hope.
Why Choose Certified Mechanical for Commercial Boiler Repair & Installation
We service commercial boilers the right way, the first time.
- Same-day service available
- Licensed and trained technicians
- Upfront pricing
- No surprise charges or hidden fees
- Repair-first approach
- Clean and professional in-home service
- Locally owned and operated company
Over 20 years combined industry experience, businesses across the GTA have trusted us for safe, reliable commercial boiler repairs and installations completed to certified standards.
Frequently Asked Questions About Commercial Boiler Repair & Installation
Should You Repair or Replace Your Commercial Boiler Equipment?
Repair Makes Sense When...
The Boiler Structure Is Still Sound
If the heat exchanger and core components are intact, repairs can restore reliable operation.
The System Meets Current Heating Needs
Repairing avoids unnecessary replacement when the system still supports your facility.
The Issue Is Isolated
Many boiler issues involve one component such as a pump, valve, burner, or sensor.
Replacement Might Be Better If...
The Boiler Is Near End of Life
Older systems may be inefficient and prone to frequent failures.
Major Component Failures Exist
Cracked heat exchangers or repeated control failures may justify replacement.
You Want Better Efficiency
New boilers offer improved energy efficiency and lower operating costs.
Not sure which option makes sense?
Call 1-866-492-4959 to speak to our technicians who provide honest recommendations.
Book Your Commercial Boiler Service Online!
Our team will contact you shortly to confirm your booking.