HVAC Emergency? We're on Our Way.
When your building's heating or cooling fails, every minute counts. Burban Air Systems provides 24/7 emergency HVAC repair for commercial buildings across Toronto and the GTA — nights, weekends, and holidays included.
<1hr
Dispatch Response
365
Days a Year
45+
Years Experience
Fully
Stocked Vehicles
COMMON EMERGENCIES
HVAC Problems We Resolve — Fast
Our technicians arrive with fully stocked vehicles and the expertise to diagnose and repair on the first visit.
Complete System Shutdown
Total loss of heating or cooling requiring immediate diagnostics
No Heat in Winter
Boiler failures, furnace shutdowns, and heating emergencies
Frozen Evaporator Coils
Ice buildup causing airflow blockage and system failure
No Cooling in Summer
AC failures, compressor issues, and refrigerant leaks
Electrical Faults
Tripped breakers, burning smells, or component failures
Unusual Noise or Vibration
Grinding, squealing, or banging signaling component failure
Water Leaks & Drains
Clogged condensate drains, overflows, and water damage risks
Control & BAS Failures
Thermostat malfunctions, sensor failures, and zone issues
WHEN YOU CALL
Here's Exactly What Happens
No phone trees. No waiting until Monday. Here's our emergency process.
1
You Call Us
A real dispatcher answers 24/7 and gets the details of your emergency
2
Technician Dispatched
The nearest technician heads to your building in a fully stocked vehicle (under 1-hour target)
3
Diagnosis
We find the cause and explain your options before any work starts
4
Repair & Report
Most repairs are completed on the first visit, with a written service report after
EQUIPMENT WE REPAIR
Emergency Service for All Commercial HVAC Systems
Whether it's a rooftop unit, boiler, make-up air system, or split system — our technicians carry the tools, parts, and diagnostic equipment to handle it on the first visit.
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RTU-01 — Rooftop Unit
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RTU-02 — Rooftop Unit
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​Boiler — Main
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​MUA-01 — Make-Up Air
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​Split System — Lobby
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​AHU-01 — Air Handler
System Down
Operational
Operational
Operational
Operational
Repairing
EQUIPMENT WE REPAIR
What To Do Before We Arrive
Whether it's a rooftop unit, boiler, make-up air system, or split system — our technicians carry the tools, parts, and diagnostic equipment to handle it on the first visit.
1
Check the thermostat
Make sure it's set correctly and hasn't been accidentally switched off or changed
2
Check the breaker panel
Look for tripped breakers related to your HVAC system — reset once if tripped
3
Note any warning signs
Unusual smells, sounds, error codes on displays — tell our tech when they arrive
4
Ensure roof/mechanical room access
Coordinate keys, fobs, or security clearance so our tech can get to the equipment
5
If you smell gas, evacuate
Leave the building immediately, call 911 first, then call us
PREVENT FUTURE EMERGENCIES
Maintenance Plans That Pay for Themselves
Most HVAC emergencies are preventable. Our scheduled maintenance programs catch problems early — reducing emergency calls.
✓ Quarterly or monthly inspections
​✓ Priority emergency response
​✓ Detailed reporting after every visit
✓ Extended equipment life
PROPERTIES WE SERVE
Emergency Repairs for Every Building Type
Office Towers
Multi-zone systems requiring coordinated scheduling around tenant operations
Retail & Shopping Centres
Customer-comfort systems that need to run reliably during business hours
Condos & Apartments
Suite-level and shared mechanical rooms in high-rise residential buildings
Schools & Government
Code-compliant maintenance with strict air quality and documentation standards
Industrial & Warehouses
High-volume heating and ventilation systems in large open-span facilities
Property Managers & REITs
Multi-building programs with standardized reporting and vendor compliance
Certified for Emergency Work
TSSA Licensed
WSIB Compliant
ContractorCheck
HRAI Member
ACMO Member
Fully Insured
Don't Wait — Call Now
Our emergency dispatch team is available 24 hours a day, 365 days a year. One call and we're on our way.