When comfort collapses: the story of an HVAC emergency in the heart of the South Shore
In the vast Longueuil area, during an exceptionally harsh winter, a family recently went through an extreme situation: seven days without heating, in a poorly insulated house, with outside temperatures dipping close to -25°C. At AirGreen, we were urgently called to resolve this major breakdown. Here’s the full story of a complex HVAC intervention that highlights the importance of a reliable, well-maintained heating system adapted to Québec’s climate.
A cry for help in the freezing night
On the night of February 12, our emergency line rang at 1:23 a.m. A panicked father explained that their central heating system had just stopped working. No warm air blowing, no thermostat response—just a biting cold creeping into every room of the house.
We immediately scheduled an on-site visit to Longueuil for the early morning. At AirGreen, we know that fast intervention is essential in these extreme situations, where thermal comfort becomes a matter of family safety.
The diagnosis: an electric furnace at the end of its life
Once on-site, our team quickly identified the issue: an old 25-year-old electric furnace, already repaired several times, had just given out. The internal components were burned out, the fan motor was out of order, and the main control board showed signs of prolonged overheating.
Why the breakdown happened:
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Dust buildup in the ducts and on internal components
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Lack of annual maintenance, which accelerated wear and tear
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An initially undersized installation, unable to handle prolonged cold spells
The urgency to act: installing a brand-new complete system
The challenge was twofold: quickly replace the unit while respecting the family’s tight budget. After a transparent discussion, we recommended a MIDEA EVOX G3 2.5 Ton central heat pump, paired with a backup electric furnace, perfectly suited to single-family homes in Longueuil.
This model offered:
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Reliable performance down to -30°C thanks to Inverter technology
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Excellent energy efficiency (SEER 18, HSPF 10)
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Eligibility for Hydro-Québec’s LogisVert grants, reducing the total cost by $5,000
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A 10-year warranty on parts and the compressor
Installation within 24 hours: an exceptional team mobilization
Thanks to our parts warehouse in Boucherville and our mobile teams across the South Shore, we were able to schedule and complete the installation the very next morning.
Key steps in the installation:
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Safe removal of the old system
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Ductwork adaptation to integrate the new unit
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Installation of the Midea smart thermostat, Wi-Fi compatible and remotely programmable
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Full commissioning with airflow balancing and leak testing
Immediate result: a return to warmth… and peace of mind
By the end of the day, the home maintained a stable indoor temperature of 22°C. The family, who had been forced to sleep fully dressed under heated blankets, was finally able to regain optimal thermal comfort.
The father told us, visibly moved:
"I didn’t think we’d have heat back this quickly. Your efficiency and empathy saved us."
Lessons learned: how to avoid this kind of breakdown in the future
This case perfectly illustrates the importance of preventive maintenance and a heating system tailored to Québec’s extreme climate.
AirGreen’s recommendations:
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Have your HVAC system inspected and serviced every year before winter
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Replace systems over 15 years old, especially if frequently repaired
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Choose high-efficiency units using eco-friendly refrigerants like R-32 or R-454B
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Monitor temperature fluctuations and thermostat response — delays or unusual noises may signal an imminent breakdown
The AirGreen expertise: fast, human, local
We don’t just sell machines. We ensure the safety, comfort, and peace of mind of thousands of families across Greater Montréal. Our certified technicians respond weekly in Longueuil, Montréal, Laval, the South Shore, and the North Shore, fully understanding the specific constraints of every type of building.
Why choose AirGreen in an emergency?
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24/7 service for heating emergencies
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Strategically located warehouses to speed up delivery
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Technicians trained in the latest HVAC technologies
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Full support to obtain LogisVert grants
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Personalized, transparent advice tailored to your budget
Conclusion: a true story, comfort restored thanks to a strategic HVAC intervention
This week without heating was a tough ordeal for this Longueuil family, but it also became an opportunity to rethink their thermal equipment for the long term. At AirGreen, we believe that every emergency is also a chance: to demonstrate our expertise, our human approach, and our ability to act fast, do it right, and make it last.