Improving indoor air quality in a school setting: a challenge we tackled with expertise
At AirGreen, we understand just how critical indoor air quality is in educational environments. Poor air circulation can negatively affect concentration, well-being, and the health of both students and staff. Recently, we were called in to assist a primary school located on the North Shore of Montréal, where ongoing ventilation issues and stale air were impacting everyone in the building.
This project perfectly showcases our ability to diagnose complex HVAC challenges and deliver technical solutions that are efficient, cost-effective, and sustainable. In this particular case, the installation of a ceiling-mounted cassette unit completely transformed the air quality in this school.
The context: a school facing persistent air quality problems
The school in question, located in a quiet residential town on the North Shore of Montréal, had been struggling for months with poor air circulation. Several teachers reported frequent headaches, a sensation of stagnant air in certain classrooms, and difficulty maintaining a stable temperature, especially during seasonal transitions.
The existing equipment was outdated and poorly maintained, no longer able to meet the demands of a busy facility hosting over 300 students daily. After a comprehensive evaluation conducted by our AirGreen team, we discovered there was no active ventilation in certain areas, especially classrooms furthest from the main ductwork.
Our solution: a 4-way Fujitsu ceiling cassette
To respond directly and effectively to this challenge, we recommended installing a Fujitsu 4-way ceiling cassette unit, 24,000 BTU model RGLX24CVCA, known for its even air distribution, discreet design, and excellent energy efficiency. Here’s why we chose this model:
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Multi-directional airflow: distributes air 360°, ensuring consistent ventilation across large spaces—ideal for classrooms.
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Flush ceiling installation: the unit is nearly invisible and doesn’t interfere with furniture layouts or classroom aesthetics.
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Centralized control: staff can easily adjust temperatures by zone depending on instructional needs.
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Inverter technology: for quiet, efficient, and energy-saving operation.
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R-32 refrigerant: more environmentally friendly, with a lower global warming potential (GWP).
The installation process: speed, safety, and precision
The installation was scheduled to take place during spring break, in order to minimize disruptions to classroom activities. Here’s how the job unfolded:
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Structural assessment of the suspended ceilings to ensure safe integration of the unit.
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Installation of reinforced anchor supports, ensuring perfect stability without vibration noise.
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Connection to the existing electrical system, with integration of a new programmable thermostat.
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Drainage conduit connections to avoid any condensation or leaks within the ceiling space.
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Comprehensive functionality tests, including load simulations to validate air distribution performance.
Everything was completed within three working days, including thorough clean-up of the area and a brief training session provided to the school administration on how to use the unit.
The results: immediate and measurable improvement in air quality
From the very first week following installation, teachers noticed a significant improvement in both thermal comfort and overall air quality. A temporary CO₂ sensor installed by the administration showed a 45% reduction in carbon dioxide levels in the treated classrooms.
The school now enjoys:
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Increased comfort for both students and staff;
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Better energy control, thanks to Inverter technology;
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A localized and autonomous ventilation system that avoids thermal loss in long central ducts.
Why choose a ceiling cassette unit for schools?
Ceiling-mounted cassette units are especially well-suited for schools, libraries, daycare centers, and other collective spaces. Here are the key benefits:
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Even airflow distribution, crucial for long or highly occupied rooms;
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Clean and unobtrusive appearance, preserving the educational environment;
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Quiet operation, a must-have for learning environments;
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Installation flexibility, even in older buildings.
AirGreen: your trusted HVAC partner for institutional projects on the North Shore
At AirGreen, we have hands-on experience with complex HVAC installations in public institutions such as schools, community centers, and municipal buildings. Our work is always customized, meticulous, and compliant with the strictest safety standards.
We serve a wide area, including Montréal, Laval, Longueuil, the North Shore, and the South Shore, with dedicated teams trained to handle the technical challenges of older or high-usage buildings. Thanks to our tailored approach and commitment to quality, we ensure the reliability and durability of every installation.
Practical advice for school administrators
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Have your HVAC systems inspected every two years, especially in buildings over 20 years old.
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Opt for localized units like ceiling cassettes when a full renovation isn’t feasible.
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Prioritize ergonomics: choose units that are quiet and easy for staff to operate.
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Look into grant programs: some HVAC upgrades may be eligible for financial assistance under energy efficiency initiatives.