Étude de cas : la cassette de plafond qui a redonné vie à un gymnase sur la Rive-Sud
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Case Study: The Ceiling Cassette That Brought New Life to a Gymnasium on the South Shore

A tailored HVAC solution for a high-demand sports space in need of lasting comfort

In the world of commercial HVAC, every project comes with its own unique set of challenges—especially when it comes to high-traffic spaces like gymnasiums. These environments demand even temperature distribution, extremely quiet operation, and unmatched durability. On Montréal’s South Shore, in a high school located in Saint-Hubert, we were called in to solve a major problem: a gymnasium that was too hot in the summer, too cold in the winter, and poorly ventilated year-round. Here’s how AirGreen transformed this space using a high-performance ceiling cassette indoor unit.

The context: a gymnasium difficult to heat and cool

School gymnasiums are notoriously energy-intensive and difficult to maintain at a comfortable temperature. With high ceilings, large glass surfaces, and humidity generated by intense physical activity, most traditional systems fail to provide consistent thermal comfort.

In this specific case, the existing system—a failing ducted unit—was no longer able to meet users’ needs. The school administration was looking for a fast, energy-efficient, and discreet solution that wouldn’t require structural overhauls.

Our strategic choice: the Fujitsu R-32 48,000 BTU ceiling cassette

After a detailed assessment of the space, thermal loads, and ventilation requirements, our team chose to install a Fujitsu AUUG48LRLA ceiling cassette using R-32 refrigerant, paired with the outdoor unit AOUG48LATT. This 48,000 BTU heat pump cassette was selected for its high energy efficiency, its ability to handle large volumes of air, and its seamless integration into the existing drop ceiling.

Key benefits of the Fujitsu AUUG48LRLA cassette:

  • 360° air distribution, ideal for wide open spaces like gymnasiums.

  • Inverter technology with variable capacity, ensuring optimized energy consumption.

  • Use of R-32 refrigerant, more eco-friendly than R-410A.

  • Silent operation, essential in an educational setting.

Installation process: efficiency, safety, and precision

Our certified technicians completed the installation in under 48 hours, scheduled during downtime to avoid disrupting sports activities. The main technical challenges we faced included:

  • Very high ceilings, requiring specialized lifts for safe cassette mounting.

  • Integration into the existing drop ceiling, which involved custom adaptations to the metal framework.

  • Installation of additional air diffusion panels to improve airflow toward the most frequently used areas.

Special care was taken to ensure airtight refrigerant lines, airflow calibration, and the programming of smart operating cycles to minimize energy use during inactivity.

The result: restored thermal comfort and optimized energy management

Just weeks after the system was up and running, feedback from school management and PE teachers was overwhelmingly positive:

  • The temperature remains stable, even during peak occupancy.

  • Humidity is now better controlled, eliminating condensation on glass surfaces.

  • The system operates in silent mode, without disrupting classes.

The new setup also delivered a 32% annual energy consumption reduction for the gymnasium, based on early projections. Plus, this unit is eligible for a LogisVert grant from Québec’s energy transition program, helping reduce the school’s overall investment.

Why a ceiling cassette is ideal for large spaces like gymnasiums

Ceiling cassette indoor units are perfectly suited for:

  • High ceilings

  • Areas requiring uniform air distribution in all directions

  • Public spaces where low noise levels are crucial

  • Environments where aesthetics demand invisible ceiling integration

AirGreen’s expertise: a comprehensive, tailored approach

This project on the South Shore is a clear example of our ability to address the specific needs of educational environments. Our approach goes far beyond just installing a unit; we analyze, plan, and customize every step to ensure optimal performance.

We also implemented:

  • A preventive annual HVAC maintenance plan, including filter cleaning, refrigerant line inspections, and thermostat calibration.

  • A quick training session for staff on system usage, scheduling, and seasonal adjustments.

AirGreen’s tips for public and commercial space managers

Here are some practical tips we share with facility managers of public or commercial buildings:

  1. Evaluate your actual thermal needs based on how the space is used—not theoretical models.

  2. Choose HVAC systems with environmentally friendly refrigerants like R-32.

  3. Opt for configurations with multi-directional air diffusion, especially effective in large, open areas.

  4. Plan for mandatory annual maintenance to extend your system’s life and ensure energy efficiency.

Conclusion: a customized installation, comfort fully restored

This project completed in Saint-Hubert, on Montréal’s South Shore, is a perfect illustration of our expertise in custom HVAC solutions. Thanks to the Fujitsu R-32 48,000 BTU ceiling cassette, the gymnasium now enjoys optimal thermal comfort, while meeting environmental and budgetary goals.

At AirGreen, we combine cutting-edge technology, technical expertise, and personalized customer service for every project—big or small. It’s not just about air conditioning, it’s about quality of life.