A Memorable Emergency HVAC Call on a Winter Night in the North Shore
It was well past midnight when a panicked call came through AirGreen’s emergency line. A residential customer located in Blainville, on the North Shore of Montréal, had just discovered that their central heating system had completely failed, while outdoor temperatures were plunging below -25°C. More than just a regular service call, this was an emergency: a family of five was at risk of spending Christmas night without heat. Immediately, our team dispatched one of our experienced technicians, Philippe, for an emergency HVAC intervention that would soon become unforgettable.
The Diagnosis: A Failing Electric Furnace
Upon arriving, Philippe performed a complete system assessment. The unit in question was a Lennox MMD 10 kW electric furnace, installed nearly ten years ago and responsible for the forced-air central heating system. The unit was unresponsive, and an error code pointed to an electrical overload linked to a heating relay component. The control board showed signs of overheating, requiring immediate action to prevent any risk of fire or short circuit.
A Tailored Emergency Solution
Despite the late hour, our Boisbriand warehouse is always accessible for critical situations. Philippe made a brief stop there to retrieve compatible parts—a high-capacity relay and a cold-resistant wiring kit. Thanks to his extensive training in electric heating and experience with similar cases, he was able to fully repair the system in under two hours.
System Restart and Safety Check
Before leaving the site, our technician:
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Tested every heating cycle of the Lennox MMD furnace
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Measured electrical consumption (amperage) to confirm normal operation
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Verified the airflow in each room of the house
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Gave recommendations for a future upgrade to an energy-efficient central heat pump
He also advised scheduling an annual preventive maintenance to avoid this type of critical failure, and the client booked an appointment on the spot for spring.
Emergency Heating Service That Reflects Our Commitment
Why Call AirGreen During a Winter Breakdown?
At AirGreen, we understand that the reliability of your heating system is essential—especially in the heart of Québec’s winter. That’s why we offer:
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24/7 emergency service for heating or heat pump failures
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Certified technicians for brands like Lennox, Goodman, Fujitsu, Gree, Midea, Trane, and more
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A fleet of service vehicles stocked with critical replacement parts
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Expanded coverage including Montréal, Laval, Longueuil, the South Shore, and the North Shore
Every emergency call is treated as a top priority when safety, family comfort, or health are on the line.
A True Story That Reflects Our Mission
The Blainville customer wasn’t just relieved—they were deeply grateful. “You literally saved our Christmas Eve,” they wrote us the next morning. This story, like so many others, reflects the hands-on commitment of AirGreen, 365 days a year.
Practical Tips: How to Avoid a Heating Breakdown in the Middle of Winter
Preventive Maintenance: The Key to Performance
Annual maintenance is the best way to prevent heating failures. Our technicians inspect:
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Relay switches, transformers, and resistors
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All electrical connections
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Airflow and duct system integrity
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Air filters, which are often responsible for excessive energy use
A pre-winter HVAC checkup can help you save up to 30% on your energy bills while ensuring year-round comfort.
Consider Upgrading to a Heat Pump
In many cases, replacing an old electric furnace with a high-efficiency central heat pump allows for:
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Lower energy consumption
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Access to significant government grants
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A 4-season system for heating and air conditioning
At AirGreen, we offer models that use the latest R-32 or R-454B refrigerants, which are more environmentally friendly and eligible for Hydro-Québec’s LogisVert program.
AirGreen, Your HVAC Partner on the North Shore and Beyond
Whether you need emergency heating service, a full HVAC installation, or preventive maintenance, AirGreen is the trusted partner for families and businesses in:
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Blainville, Sainte-Thérèse, Boisbriand, Laval, Montréal
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As well as the South Shore and Longueuil
Our expertise is the result of over 15 years of successful HVAC interventions, combined with in-depth knowledge of residential and commercial heating systems.
Our promise: You’ll never be left in the cold—even on Christmas night.
Experiencing a heating emergency? Need to replace your outdated furnace? Contact us now for fast service anywhere in Montréal, Laval, Longueuil, the North Shore, or the South Shore.