Home » Interesting Articles About Wall Mounted Air Conditioners » The Surprising Story of a Wall-Mounted Air Conditioner Found Intact After a Major Flood in Montréal
L’histoire surprenante d’un climatiseur mural retrouvé intact après une inondation majeure à Montréal
Reading time: 4'

The Surprising Story of a Wall-Mounted Air Conditioner Found Intact After a Major Flood in Montréal

When resilience and technology meet: the story of a wall-mounted air conditioner that survived a disaster in Montréal

When we think of natural disasters, we usually assume irreparable damage to HVAC systems. Yet, during a major flood that struck Montréal, something rare occurred: a wall-mounted air conditioner installed by AirGreen remained intact and fully operational, despite extreme conditions. This is the technical and human story of an installation that exceeded every expectation.

The context: a flooded residential home in Montréal

This project involved a single-family home in the Ahuntsic neighborhood, near a flood-prone zone. Due to heavy rainfall and a backed-up stormwater system, the ground floor and part of the lower level were submerged in over 50 cm of water within a few hours.

The homeowner, an existing AirGreen client, had installed a FUJITSU KZAS 12,000 BTU wall-mounted air conditioner in his ground-floor office just a few months earlier. Since the flood had affected the walls, furniture, and electrical appliances, it was assumed that the indoor unit would no longer work.

The FUJITSU KZAS wall-mounted unit: built to withstand the real world

The FUJITSU KZAS 12,000 BTU is not your typical unit. Engineered for consistent performance in harsh conditions, it stands out for its:

  • Hermetically sealed dual-insulated housing, protecting sensitive components from ambient humidity;

  • Backflow prevention drainage system, preventing water buildup in case of infiltration;

  • Elevated electronic circuitry, reducing the risk of short circuits during extreme events;

  • Quiet and stable operation, even under fluctuating power conditions;

  • Eligibility for the LogisVert rebate, qualifying under the high-efficiency category for up to $1,285.

Our intervention: diagnostics, testing, and a total surprise

After the water receded, our client contacted us to schedule a complete HVAC system inspection. Here’s how our team proceeded:

  1. Full visual inspection of the indoor unit and its connections;

  2. Internal moisture check, using a surface hygrometer;

  3. Gradual power-up test, monitoring voltage and noise;

  4. Thermal performance analysis: air output temperature, fan speed, noise level.

To our astonishment, no anomalies were detected. The FUJITSU wall-mounted unit started up immediately, with no strange noises, no musty smell, and performance identical to the original post-installation reading.

Why did this HVAC installation succeed where others failed?

The success of this HVAC installation in Montréal comes down to a few key factors:

  • Strategic placement on the wall: the unit was installed 30 cm higher than the standard mounting height, which both improved airflow and saved it from the rising floodwater.

  • Perfectly sealed piping: our technicians sealed the wall passage with a reinforced insulated sleeve, preventing any backflow of moisture from behind the unit.

  • Use of anti-corrosion mounting materials: stainless steel brackets, rigid conduits, and thermo-sealed tubing.

Customer testimonial: between astonishment and relief

“I thought everything would need replacing. Seeing the wall-mounted unit still working after all that water and humidity—it felt unreal. Thank you, AirGreen, for such a quality installation.”

This feedback highlights not only the quality of FUJITSU products but above all, the meticulous care our teams take with every installation.

AirGreen’s tips for protecting your HVAC equipment in high-risk zones

If you live in a flood-prone area or a place prone to heavy rain, here are some key recommendations:

  • Install indoor units higher than the standard height, ideally at least 40 cm above finished floor level;

  • Seal all wall openings with water-resistant insulated sleeves;

  • Choose units with protected circuitry and sealed casing;

  • Schedule regular HVAC maintenance, including checks for sealing and corrosion;

  • Ask your installer for a flood risk assessment during the initial site visit.

Why AirGreen is your trusted partner for installations in Montréal and beyond

At AirGreen, every HVAC installation project is approached with the same level of rigor, whether it’s in an urban condo or a flood-risk zone. Our core values:

  • Prevention, precision, performance;

  • Technicians trained to identify and anticipate risks;

  • Systems selected for durability, quiet operation, and reliability;

  • Support with all available rebate programs in Montréal, Laval, Longueuil, Rive Nord, and Rive Sud.

Conclusion: a wall-mounted air conditioner that defies the elements

This installation in Montréal proves that a well-designed and expertly executed HVAC system can withstand extreme events. Through smart equipment selection, careful execution, and detailed planning, AirGreen delivers long-lasting solutions—even in a crisis.

Looking for a wall-mounted air conditioner that’s reliable even in the worst conditions? Contact AirGreen today for a custom installation and long-term peace of mind.

Leave a comment