Certified Furnace Repair Experts in
Toronto, Mississauga & Scarborough
Fast, professional furnace repair across the GTA with $129 $99 diagnostic credited toward your repair.
Certified Furnace Repairs Services
Fast diagnosis, honest repairs, and warranty-backed workmanship on every job.
- Toronto
- Mississauga
- Scarborough
- North York
- Markham
- Richmond Hill
- Vaughan
- Surrounding
Furnace Not Heating Properly
Blowing cold air, no heat output, or system won’t start.
Furnace Turning On And Off Frequently
Short cycling, inconsistent heating, or uneven temperatures.
Strange Noises From Furnace
Banging, rattling, squealing, or unusual operational sounds.
Thermostat Not Communicating Properly
Incorrect readings, no response, or furnace not following settings.
Weak Airflow From Vents
Poor circulation, blocked ducts, or failing blower motor.
Furnace Pilot Or Ignition Issues
Pilot won’t stay lit, delayed ignition, or ignition failure.
Same-Day Furnace Repair Across the GTA
Trusted residential and commercial furnace repair throughout the Greater Toronto Area, with same-day availability.
- Toronto
- Mississauga
- Scarborough
- North York
- Markham
- Richmond Hill
- Vaughan
- Surrounding
If your city is not listed, call us and we will confirm same-day service availability.
Furnace Brands We Repair
We repair and service all major furnace brands across Toronto, the GTA, and surrounding areas.
- Amana
- American Standard
- Armstrong Air
- Bryant
- Carrier
- Coleman
- Comfortmaker
- Daikin
- Day & Night
- Frigidaire
- Fujitsu
- Goodman
- Gibson
- Heil
- Lennox
- LG
- Mitsubishi Electric
- MRCOOL
- Payne
- Rheem
- Ruud
- Samsung
- Senville
- Tempstar
- Trane
- York
- ZLINE
Factory-trained technicians for major brands.
Don’t see your furnace brand listed? We likely still repair it. Call to confirm.
How Our Furnace Repair Service Works
Fast, Simple, Stress Free Furnace Repair
Book Your Appointment
Call or book online. Limited-time $99 diagnostic fee, fully credited toward your furnace repair.
1
In-Home Diagnosis
A certified technician inspects your furnace and identifies the root cause of the issue.
2
Upfront Pricing
You receive clear, upfront pricing and approve it before any furnace repair begins.
3
Repair & Final Testing
We complete the repair and fully test your furnace to confirm it runs properly before leaving.
4
No surprises. No pressure. Just honest, professional furnace repair.
Emergency Furnace Repair Service Near You
Fast emergency furnace repair to restore reliable heat, prevent breakdowns, and keep your home comfortable.
- Rapid diagnosis for no heat, short cycling, and ignition issues
- Expert blower motor, igniter, thermostat, and control board repairs
- Fixes for uneven heating, strange noises, and error codes
- Airflow and safety troubleshooting for efficient operation
- Same-day emergency service across the GTA
What Our Clients Say
“Our furnace stopped working during cold weather. The technician arrived fast and restored heat the same day.”
Mark D.
“They diagnosed the ignition issue quickly and explained the repair clearly. Very honest and reliable service.”
Sandra H.
“Professional repair with no upselling. The furnace runs smoothly and the house is heating evenly again.”
Kevin B.
“Excellent experience from booking to repair. The technician was knowledgeable and respectful of our home.”
Ayesha R.
Why Choose Certified Mechanical for Furnace Repairs
We repair furnace the right way, the first time.
- Same-day service available
- Licensed and trained technicians
- Upfront pricing
- No surprise charges or hidden fees
- Warranty on parts and labour
- Repair-first approach
- Clean and professional in-home service
- Locally owned and operated company
For over two decades, homeowners across the GTA have trusted us for safe, accurate furnace repairs completed to certified standards.
Frequently Asked Questions About Furnace Repair
Ignition problems, thermostat issues, or control board failures are common causes.
This may happen if the burner isn’t igniting properly or the system is overheating and shutting down.
Short cycling can be caused by airflow issues, dirty filters, or thermostat problems.
Loose components, expanding ductwork, or blower motor issues can create noise.
Power issues, ignition failure, or safety switch activation may be preventing startup.
Blocked vents, duct leaks, or airflow imbalance can affect temperature distribution.
Wiring issues, calibration problems, or a failing thermostat may be the cause.
Turn off the system, leave the area, and contact a professional immediately.
Yes, technicians service all major gas and electric furnace models.
If repairs are minor and the furnace isn’t too old, repair is usually cost-effective.
Should You Repair or Replace Your Furnace?
Repair Makes Sense When...
The Furnace Has Mostly Performed Well
If it has been reliable and the issue is recent, repair is usually the most practical path.
The Problem Is Part Related And Serviceable
Igniters, sensors, thermostats, blower motors, control boards, and switches are common failure points and are typically repairable without replacing the furnace.
You Want The Fastest, Least Disruptive Solution
Repair avoids system replacement, installation scheduling, duct changes, and permit requirements that sometimes come with a new unit.
Replacement Might Be Better If...
The Furnace Has A Pattern Of Ongoing Issues
Repeated breakdowns can indicate broader wear, making replacement a more reliable long term choice.
The Unit Has Multiple Major Failures
Heat exchanger damage, control board failure, or several high cost parts at once can make replacement more cost effective.
You Want An Upgrade In Efficiency Or Comfort
Newer furnaces can offer better energy efficiency, quieter operation, improved airflow, and smarter temperature control.
Not sure which option makes sense?
We will walk you through your options and give an honest recommendation based on cost, safety, and long term value. Call 1-866-492-4681
Book Your Furnace Service Online!
Our team will contact you shortly to confirm your booking.