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Cas réel : survivre à un mois de février sans chauffage central à Laval (les leçons surprenantes)
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Real Case: Surviving a February Without Central Heating in Laval (the Surprising Lessons)

How a Mid-Winter Breakdown Tested a Laval Home — and How AirGreen Turned the Crisis Into a Long-Term Solution

February 2025 was especially brutal in Laval, with temperatures consistently dropping to -28 °C. In a residential area of Chomedey, a family lived through one of the worst winter scenarios imaginable: a failed central heating system that left them without heat for several days. This incident not only revealed the weaknesses of an aging system, but also highlighted the importance of responsiveness, expertise, and long-term planning in any HVAC system replacement project. Here’s the account of a remarkable AirGreen intervention — and the concrete lessons learned by both our team and North Shore residents.

A Clear-Cut Diagnosis: When an Old Heating System Gives Out Under Pressure

The emergency call came in on the morning of February 9. An 18-year-old central heating system running on R-22 had completely stopped producing heat. The homeowners, including two young children, were relying on ineffective space heaters to keep indoor temperatures from dropping below 14 °C. Our technician was on-site within the hour.

What he found:

  • A completely dead compressor.

  • Partially blocked air ducts.

  • No insulation around the main ducts.

  • An outdated thermostat incapable of proper regulation.

Repairs weren’t an option: a complete HVAC system replacement was necessary.

Strategic Choice: A 3-Ton MIDEA EVOX G3 Central Heat Pump

After assessing the home’s needs and surface area (around 2,000 sq. ft. over two floors), our team recommended installing a MIDEA EVOX G3 central heat pump – 3 tons, R-454B refrigerant. This choice was clear for several reasons:

  • High energy efficiency (SEER2 of 16.6 and HSPF2 of 8.1), delivering long-term savings.

  • Fully compatible with Québec’s extreme cold, down to -30 °C.

  • Eligibility for Hydro-Québec’s LogisVert program, providing over $4,800 in grants.

  • Fully electric, eco-responsible system with zero greenhouse gas emissions.

AirGreen Installation in 48 Hours: Expertise and Adaptability

Despite harsh winter conditions, our team completed an express installation between February 10 and 11, while strictly adhering to safety and performance standards. Key steps of the intervention:

  1. Removal of the old system and proper evacuation of R-22 refrigerant.

  2. Preparation of the mechanical room, including duct insulation.

  3. Installation of the MIDEA EVOX G3 outdoor compressor, on an elevated, frost-resistant base.

  4. Mounting of the aluminum coil evaporator, ensuring optimal thermal exchange.

  5. Integration of a wireless smart thermostat, compatible with the Midea Air mobile app.

  6. Full system testing and air flow calibration for each room.

Immediate Results: Comfort, Savings, and Peace of Mind

As soon as the system went live, the homeowners noticed even heat distribution, even in the furthest rooms. By replacing an energy-hungry, poorly calibrated system with a modern, quiet, and energy-efficient unit, they were able to:

  • Cut electric consumption by 22% in the first month.

  • Access a government grant covering nearly 45% of the costs.

  • Enjoy a 10-year parts warranty, secured through AirGreen’s product registration.

What This Installation Taught Us

In the field, every case is unique. But some patterns repeat themselves across our interventions in Laval and beyond:

  • Breakdowns often happen after 12 to 15 years, especially if no annual HVAC maintenance has been done.

  • Preventive replacement is always more cost-effective than emergency response.

  • Modern heat pumps using R-454B or R-32 are the best options to combine performance, grants, and compliance with Québec environmental standards.

Why Choose AirGreen for Your Projects in Laval and the North Shore?

For over 10 years, AirGreen has been helping homeowners in Laval, Terrebonne, Blainville, Boisbriand, and Rosemère with their heating projects, energy conversion, and HVAC compliance upgrades. What sets us apart:

  • Full expertise in MIDEA, Bosch, Fujitsu, Lennox, Gree, and other certified brands.

  • Fast installations, even in extreme conditions.

  • Honest advice, based on precise diagnostics.

  • Responsive, courteous, and transparent after-sales service.

What You Can Do Right Now

Do you own a central system that’s more than 10 years old? Are you worried about a breakdown in the middle of winter? Here’s our practical advice to get ahead:

  • Schedule an HVAC maintenance visit in the fall, before peak season hits.

  • Request a free energy efficiency evaluation of your home.

  • Check your eligibility for LogisVert and Chauffez vert grants.

  • Consider installing a certified high-efficiency system for cold climates.

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