Air conditioning in schools: a powerful yet underestimated energy-saving tool
In the case of a school in Longueuil, where student comfort and cost control are both top priorities, installing a high-performance air conditioning system can dramatically transform energy management and the indoor environment. At AirGreen, we recently had the opportunity to work with a local elementary school to install a new generation wall-mounted air conditioning system, and the results were impressive: a reduction of over 50% in their annual energy bill.
A school facing major energy challenges
Before we intervened, the school was operating with an outdated, noisy, and energy-intensive air conditioning system. Not only had operating costs skyrocketed, but thermal performance was inconsistent, leading to frequent complaints from staff and students. The school administration was actively looking for a solution that was cost-effective, reliable, and sustainable, aligned with the pedagogical and regulatory standards for educational buildings in the South Shore.
Customized assessment and equipment selection
After a comprehensive evaluation of the building, classroom configurations, and installation constraints, our experts recommended the installation of Gree Lomo 24,000 BTU wall-mounted air conditioners, a model renowned for its energy efficiency, low noise emissions, and durability in high-usage environments.
Key features of the installed model:
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Capacity: 24,000 BTU (ideal for large common areas and classrooms).
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Inverter Technology: automatic power adjustment to avoid energy peaks.
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R-32 Refrigerant: more eco-friendly, with low global warming potential.
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High SEER (Seasonal Energy Efficiency Rating): Energy Star certified.
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Ultra-quiet operation: perfect for classrooms.
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Eligible for LogisVert grant: up to $1,860 in financial assistance.
A tailored installation in an active school environment
The work had to be done under strict safety, noise, and scheduling constraints. We adapted our schedule to off-hours (evenings and weekends), carefully ensuring no disruption to school activities. Our teams coordinated every phase with school leadership:
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Removal of the outdated central air system.
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Electrical upgrades to support the new units.
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Precise wall-mounted installation to optimize airflow and reduce hot spots.
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Full performance testing and calibration for each classroom.
Results: tangible cost reduction and enhanced comfort
From the first month after the installation, administrators observed a dramatic drop in electricity consumption. A year-over-year comparison revealed an average 52% reduction in air conditioning costs. In addition:
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Classroom temperatures are now stable and comfortable, year-round.
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Noise levels dropped by nearly 70%, helping students focus better.
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Complaints related to air quality have significantly decreased.
Testimonial from school leadership
"Since AirGreen replaced our old AC system, our energy costs have been cut in half. But most importantly, student and staff comfort has improved dramatically. Their team was incredibly professional, discreet, and efficient." — Assistant Principal, Elementary School, Longueuil.
Why trust AirGreen for your school’s HVAC projects?
We understand that schools have unique needs: safety, budget, efficiency, and comfort. At AirGreen, we serve Montréal, Laval, Longueuil, as well as the North Shore and South Shore, delivering custom HVAC solutions even in complex environments like schools, daycares, or municipal buildings.
Our advantages:
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Free and complete thermal evaluations.
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Support with grant applications (LogisVert, Transition Énergétique).
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Teams trained in school safety protocols.
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Extended warranties on equipment and labor.
Practical advice for schools looking to optimize their AC
Here are a few takeaways from our experience for any school wanting to improve their air conditioning systems:
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Start with a full energy evaluation: understanding real consumption is the key to taking effective action.
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Choose high-efficiency, Energy Star certified units.
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Prioritize regular maintenance: clean filters and system inspections boost performance.
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Select eco-conscious refrigerants, like R-32 or R-454B.
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Plan work during off-peak periods (summer, weekends).
Other recent school projects
We also equipped:
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A high school in Laval with a 36,000 BTU Bosch BOVA multi-zone system.
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A daycare in Brossard with compact and ultra-quiet Fujitsu units.
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A vocational training center in Terrebonne with a Goodman central heat pump.
Each project is unique, but the outcome remains the same: better comfort, lower costs, and improved air quality for everyone inside.