Ce que vous ne savez pas sur les dangers d’une ventilation mal entretenue dans les écoles et garderies
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What You Don’t Know About the Dangers of Poorly Maintained Ventilation in Schools and Daycares

A silent threat to children’s health: neglected ventilation in educational institutions

In Greater Montréal, where the climate varies drastically from season to season, ventilation systems play a crucial role in indoor air quality—especially in schools and daycares. At AirGreen, we’ve noticed through numerous service calls that improperly maintained HVAC systems can have serious consequences on children’s health, teachers’ comfort, and even academic performance. This topic, still too rarely discussed, deserves our full attention.

A concerning reality in Greater Montréal

Over the past several years, our team has serviced elementary schools, home-based daycares, and early childhood centers (CPEs) in Montréal, Laval, Longueuil, as well as on the North Shore and the South Shore. In many cases, we find that ventilation systems are either poorly or never maintained—filters clogged with dust, air ducts blocked, or air handling units with overheated motors.

Why proper ventilation maintenance is essential in schools and daycares

1. Increased exposure to contaminants for children

Children breathe more quickly than adults, making them more sensitive to indoor air pollutants such as:

  • Fine particulate matter (PM2.5),

  • Mold spores,

  • Volatile organic compounds (VOCs),

  • Airborne bacteria and viruses.

A poorly maintained system can accumulate and circulate these pollutants instead of filtering them out. This can lead to respiratory irritation, asthma, allergies, and attention difficulties in children.

2. A direct impact on absenteeism rates

In several schools where we performed HVAC cleaning services, administrators reported a noticeable drop in absences due to respiratory issues or persistent headaches. Preventive maintenance has a measurable, real impact on student well-being and attendance.

3. Compromised energy efficiency

Dirty systems operate under strain. The result: excessive electricity consumption, motor overheating, premature wear on components, and increased costs for institutions. By cleaning air exchangers, ductwork, and supply and return grilles, we help these systems run at peak efficiency.

Testimonial: service call at a daycare in Laval

This past January, our AirGreen team was called to a private daycare in Laval where the director was concerned about a persistent bad odor and stuffy air. Upon inspection, we discovered that the ventilation ducts had never been cleaned since the facility opened—over 8 years ago. The filters were clogged with dust, pet hair, and mold invisible to the naked eye.

Our comprehensive HVAC cleaning process included:

  • Complete removal of contaminants,

  • Disinfection using certified child-safe products,

  • Replacement of HEPA filters,

  • Mechanical inspection of turbines and fans.

A few weeks later, the director confirmed a clear improvement in air quality, fewer colds and flu-related absences, and reassured parents.

Our recommendations for educational institutions

Implement a regular maintenance schedule

At minimum, we recommend:

  • A visual inspection every 6 months,

  • A complete cleaning of the ductwork once a year,

  • Filter replacement every 3 to 6 months depending on occupancy.

Train facility managers in HVAC basics

Too often, school or daycare managers aren’t even aware that a ventilation system is in place. By offering short training sessions, we help them identify early warning signs: unusual noises, weak airflow, persistent odors.

Choose equipment adapted for sensitive environments

We offer low-noise HVAC systems, with HEPA filtration and CO2 sensors ideal for classrooms, daycare rooms, and nurseries. Our installations in Montréal, Longueuil, and the North Shore have shown that these choices make a real difference.

Why choose AirGreen for your HVAC cleaning services

Proven expertise in educational settings

We’ve already cleaned and serviced over 200 institutions in Greater Montréal. Our approach is rigorous, discreet, and complies with the strictest hygiene standards, especially in child-sensitive environments.

Specialized equipment and qualified technicians

Our technicians are trained to work in sensitive environments, equipped with high-performance suction systems, inspection cameras, and child-safe cleaning products.

Complete documentation and follow-up

After every service, we provide a detailed report with before/after photos, technical observations, and recommendations. This documentation is valuable for audits and transparency with parents and regulatory authorities.

The risks of ignoring HVAC maintenance in schools

  • Proliferation of invisible mold contaminating indoor air.

  • Easier transmission of airborne viruses (flu, COVID-19).

  • Chronic fatigue, drowsiness, reduced concentration.

  • Legal risk in the event of a failed inspection by the Ministry of Health or Family Services.

AirGreen, your trusted HVAC partner for educational environments

At AirGreen, we firmly believe that clean indoor air is a fundamental right for every child. By ensuring regular, professional maintenance of your ventilation systems, you’re not only investing in students’ comfort and health but also in the longevity of your equipment.

We serve all of Greater Montréal, from Laval to Longueuil, including the South Shore, the North Shore, and every borough in Montréal.

Need fast and compliant service?

Contact us today for a free evaluation of your HVAC system. Together, let’s ensure clean, healthy air for the generations to come.

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