When Every Minute Counts: HVAC Emergencies That Marked Our Teams in Montréal
In the world of residential and commercial heating in Montréal, some days stand out. At AirGreen, we’re often called for urgent situations where indoor temperatures are dropping fast, a critical HVAC component has failed, or a building is at risk of serious damage in the middle of winter. These critical calls allow us to showcase our full expertise, responsiveness, and most of all, our ability to deliver lasting solutions under pressure.
Here are 5 of the most memorable heating emergency interventions handled by our HVAC technicians in Montréal. These stories illustrate our skillset, commitment, and deep understanding of Quebec’s climate realities.
Emergency Call 1: A Freezing Daycare in Villeray… At -25°C Morning Temperatures
On a bitterly cold January morning, our team received an emergency call from a private daycare in Villeray. The central heating system had just failed, leaving over 20 children and staff in the cold.
Diagnosis:
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Lennox MMD 3 Ton Electric Furnace completely shut down.
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No warm air in the ducts, with indoor temperature falling below 13°C.
Our Solution:
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On-site in under 90 minutes.
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Temporary installation of portable heaters to maintain a safe indoor temperature.
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Replacement of a burnt-out power relay.
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Full system restart after 3 hours of work.
Heating was fully restored before noon, avoiding a forced closure and ensuring a safe environment for the children.
Emergency Call 2: Entire Apartment Building Without Heat in the Plateau-Mont-Royal
On a Saturday night, a 12-unit apartment building contacted us: no tenant had heating. The issue stemmed from a central system using a Zephyr Central Heat Pump | 4 Ton | R-454B, installed two years earlier by another contractor.
Problem Identified:
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Inverter control module failure.
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System no longer responding to individual thermostats.
Our Intervention:
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Emergency response at 10:30 p.m.
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Fast diagnosis using our mobile diagnostic equipment.
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Temporary bypass of the faulty module to restore heating.
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Immediate order of replacement part, delivered within 48 hours.
Thanks to this quick action, heating was restored within 2 hours, avoiding tenants having to spend the night in freezing conditions or relocate.
Emergency Call 3: Commercial Office in Griffintown Frozen Due to Lack of Maintenance
A commercial client in Griffintown called us in a panic: their FUJITSU KZAH 18,000 BTU wall-mounted heat pump, used to heat their offices, suddenly stopped producing heat.
What We Found:
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Unit completely blocked by built-up dust and ice in the evaporator coil.
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No maintenance had been done in over 3 years.
Resolution:
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Complete defrosting, high-pressure cleaning on-site.
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Filter checks and thermostat recalibration.
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System rebooted with full efficiency.
The client then subscribed to our annual HVAC maintenance plan, to make sure this situation never happens again.
Emergency Call 4: Westmount Home Struck by Power Surge
A winter storm caused a surge that damaged several appliances in a Westmount home — including the MIDEA25 | 9,000 BTU wall-mounted heat pump, used as the main heating source in the living room.
Situation:
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No power to the indoor unit.
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Persistent error code flashing on the control module.
Our Actions:
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Full power circuit testing.
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Replacement of the start-up capacitor.
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Panel voltage inspection.
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Installation of a surge protection system to prevent future breakdowns.
The system was restarted the same day, with a recommendation to monitor the home’s electrical system moving forward.
Emergency Call 5: Heat Pump Encased in Ice in Pointe-aux-Trembles
In February, our team was called by a family in Pointe-aux-Trembles whose Gree Extreme 24,000 BTU wall-mounted heat pump was completely encased in ice.
On-Site Assessment:
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Block of ice covering the entire bottom half of the outdoor unit.
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The system’s auto-defrost cycle had failed.
Technical Intervention:
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Use of our specialized defrosting kit.
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Reprogramming of the defrost cycle based on local climate conditions.
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Full cleaning of the casing and coils.
Result: Heating fully restored, with a 15% performance boost following our intervention.
Lessons Learned from These Emergency Interventions
These five situations reveal several key takeaways for homeowners and property managers across Montréal:
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HVAC maintenance is essential to prevent sudden breakdowns.
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Effective diagnostics under pressure depend on both technician expertise and quality equipment.
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Modern heat pumps are efficient, but require proper installation and routine follow-up.
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AirGreen is available 24/7 for HVAC emergencies in Montréal, with fast, practical, and lasting solutions.
Why Choose AirGreen in an Emergency?
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Certified technicians with real-world experience in Quebec’s climate.
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Guaranteed response within 2 to 4 hours, depending on the area.
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Access to fast replacement parts through our local distribution network.
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Expertise with brands like FUJITSU, Gree, MIDEA, Bosch, Lennox, and more.
In Conclusion: From Emergency Comes Trust
Every emergency call brings us closer to our clients. By providing reliable and lasting solutions, we not only restore their comfort but also build a foundation of trust, rooted in our responsiveness and expertise.
At AirGreen, every emergency is an opportunity to demonstrate our expertise and guarantee immediate comfort — even in the heart of Montréal’s winter.