When a simple HVAC upgrade transforms focus, health, and academic success
In the Laval region, the principal of a public elementary school contacted AirGreen for what seemed at first like a strictly technical request: replacing an outdated ventilation system with a high-performance ERV (Energy Recovery Ventilator). What they didn’t yet know was that this upgrade would drastically improve the quality of life for both students and staff, and have a direct, measurable impact on academic performance.
This story isn’t an isolated case, but it stands as a powerful example of what a professionally designed and executed HVAC installation can accomplish.
The initial problem: an outdated ventilation system in a high-demand learning environment
This school, located in a high-traffic residential neighborhood in Laval, was dealing with a range of serious issues:
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Extremely high CO₂ levels in closed classrooms
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Persistent odors after class hours and in locker rooms
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Chronic fatigue reported by teachers as early as mid-afternoon
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Increased absenteeism during fall and winter
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Mold growth spotted in dark corners of several rooms
Despite regular maintenance, the ventilation system—over 20 years old—was no longer capable of delivering air quality that met today’s standards, especially in classrooms holding 25 to 30 students.
AirGreen’s intervention: installation of a Lifebreath ERV, model 195 ECM
Our specialists began with a comprehensive indoor air quality analysis, measuring CO₂ levels, humidity, VOCs, and airflow in every classroom. Then, in collaboration with the school principal and the school board’s maintenance team, we proposed a custom-tailored solution:
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Replacing the old unit with a Lifebreath 195 ECM ERV
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Complete ductwork reconfiguration in classrooms and administrative offices
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Installation of smart sensors to automatically adjust airflow based on occupancy
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MERV-13 filtration to block allergens, fine dust, and urban particles
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Integration into the existing central heating system without disrupting operations
The entire project was completed in 6 days, including the weekend, to avoid any interruption to classes.
The results: noticeable improvements in comfort, focus—and report cards
Three months after the new ERV installation, school leadership reported visible improvements:
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Absenteeism down by 28% compared to the same period the previous year
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Significant improvement in grades in math and reading (especially among struggling students)
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Increased energy and focus among students in the afternoon, according to teachers
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Fewer complaints about headaches and fatigue
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Complete elimination of lingering odors in closed rooms
A follow-up study by an independent firm confirmed that ambient air quality had improved by 47%, based on comfort and purity indicators (CO₂, humidity, PM2.5).
Why the Lifebreath 195 ECM ERV made all the difference
This model stands out for several key technical features:
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Ultra-efficient ECM motor, with low energy consumption
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Optimized energy exchanger to recover heat in winter and coolness in summer
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195 CFM capacity, ideal for shared spaces like classrooms
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Compatible with existing HVAC systems, streamlining upgrades
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Advanced filtration, crucial in urban school environments
This ERV is among the few units known for its durability and consistent performance, even with high fluctuations in occupancy and outside temperatures.
AirGreen’s strategic role in institutional projects
At AirGreen, we don’t just sell and install units. Every project is guided by an integrated approach, which includes:
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Building analysis based on its function (residential, commercial, or institutional)
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Careful equipment selection based on technical constraints and budget
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Custom installation, performed by certified technicians
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Training for the end users, to ensure proper day-to-day use and maintenance
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Fast, documented after-sales support, with regular performance checks
We’ve supported several facilities across Greater Montréal with ventilation system modernization, including schools, healthcare centers, and municipal offices.
Common mistakes to avoid when replacing a ventilation system
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Choosing an ERV or HRV without first analyzing the building’s real needs
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Ignoring airflow balancing, often the cause of poorly ventilated zones
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Installing an oversized unit, which uses more energy and works less efficiently
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Underestimating the importance of filtration in spaces frequented by children or sensitive individuals
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Limiting the project to a simple equipment swap without reviewing the existing ductwork
An impact far beyond the technical: creating a healthy, sustainable learning environment
This Laval case reminds us that indoor air quality isn’t just a detail, but a key factor in human well-being and performance. Whether at school, at home, or at work, breathing clean air leads to clearer thinking, better sleep, and stronger focus.
At AirGreen, we see every project as a shared responsibility. We don’t just install machines—we help build healthy, sustainable, intelligent environments across Montréal, Laval, Longueuil, the North Shore, and the South Shore.