Maintaining indoor comfort and safety in your home in Longueuil during the harsh Québec winter becomes a major challenge when a heating system failure strikes at the worst possible time—during a winter storm. These extreme weather events expose homes to freezing temperatures, violent winds, and heavy snowfall, making any heating system breakdown not only uncomfortable but potentially dangerous.
At AirGreen, we’ve developed solid expertise to respond effectively to these emergency situations, with a focus on fast response times, technical reliability, and peace of mind for our clients in Longueuil, Montréal, Laval, the South Shore, and the North Shore.
Winter in Longueuil: a tough challenge for heating systems
The harsh climate in Longueuil demands high-performance and well-maintained heating systems. During a storm, energy demand spikes significantly, putting intense pressure on HVAC equipment, particularly central heat pumps, electric furnaces, and forced-air systems. A failure under these conditions can quickly cause indoor temperatures to drop below comfort—or even safety—levels.
Our certified technicians regularly operate in the region to diagnose and repair systems that have failed during extreme cold. These interventions have allowed us to establish precise protocols and a dedicated emergency logistics team for Longueuil and surrounding areas.
Case study: AirGreen intervention during a heat pump breakdown in Longueuil
Last January, at the height of a winter storm that dumped over 25 cm of snow in under 12 hours, a family in Longueuil contacted us after the complete failure of their FUJITSU AOU-KM36RLXFZ central heat pump (36,000 BTU). The system, installed in a single-family home, refused to restart despite multiple attempts.
On-site diagnosis
Less than three hours after the call, our team was on site. The diagnosis revealed a build-up of ice on the outdoor unit, combined with a failure in the defrost circuit. The storm had caused abnormal ice accumulation, preventing the system from effectively switching between heating and cooling cycles.
Solution implemented
Our experts:
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Manually defrosted the outdoor unit using specialized equipment.
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Cleaned the external heat exchanger.
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Replaced the faulty defrost sensor.
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Reprogrammed the unit for optimized performance in extreme cold.
The entire intervention took less than 90 minutes, allowing the family to regain a stable indoor temperature of 21°C, despite outdoor temperatures hitting -24°C with wind chill.
What to do immediately if your heating system stops working?
When your heating system breaks down during a storm in Longueuil, every minute counts. Here’s what to do before we arrive:
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Turn off the power to the malfunctioning unit (via breaker or switch).
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Make sure the filters aren’t blocked (if accessible).
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Check your thermostats—some malfunctions are due to simple miscalibration.
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Close off essential rooms to retain heat.
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Contact AirGreen immediately for fast and professional emergency service.
Why choose AirGreen for a heating emergency in Longueuil?
Our promise is built on reliability, availability, and expertise. Thanks to our mobile team dedicated to emergencies on the South Shore, we can respond quickly even when roads are partially blocked by snow. We’ve implemented a technician geolocation system so we always dispatch the team closest to your location.
In addition, our trucks are fully stocked with replacement parts compatible with leading brands such as Fujitsu, Gree, Bosch, Goodman, Lennox, and Arcoaire, helping us cut down response times and ensure immediate system restoration in most cases.
Prevention is key: pre-winter HVAC maintenance
To minimize the risk of winter breakdowns, regular HVAC maintenance is essential. At AirGreen, we offer a complete preventive service that includes:
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Inspection of the defrost cycle.
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Verification of temperature sensors.
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Cleaning of the outdoor condenser.
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Thermostat calibration.
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Peak demand performance testing.
We recommend scheduling this maintenance before November to ensure optimal performance during the coldest months.
Available grants and support for homeowners in Longueuil
If a system is beyond repair or underperforming, several grant programs can reduce the cost of investment. For instance:
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Hydro-Québec’s LogisVert Program, which offers up to $5,000 for high-efficiency systems.
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Energy transition tax credits.
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The Rénoclimat program (focused on energy efficiency and thermal improvements).
Our experts handle eligibility verification, documentation preparation, and step-by-step guidance to help you secure these financial aids.
Practical tips: avoid common mistakes during a storm
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Don’t try to defrost your heat pump with hot water—this can damage sensitive components.
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Never use propane heaters indoors—high risk of carbon monoxide poisoning.
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Don’t wait for the system to break down to call a professional—warning signs exist (unusual noises, frequent defrost cycles, etc.).
The AirGreen commitment: safety, efficiency, and peace of mind
Each winter, we help dozens of households in Longueuil maintain or restore their thermal comfort despite the worst weather conditions. Our mission is simple: provide fast, efficient, and long-lasting HVAC service, tailored to Québec’s climate realities and the unique needs of every home.
Trust our expertise so that—even in the fiercest storm—your comfort is never compromised.