A Home Better Protected Against Air Pollution
Air pollution isn’t limited to large industrial cities. Even in Longueuil, on the South Shore of Montreal, smog can accumulate during both summer and winter, directly affecting the indoor air quality of homes. That’s exactly what a local family discovered when their asthmatic child’s symptoms began to worsen as heatwaves approached.
Concerned by these alarming signs, the homeowners reached out to our team at AirGreen. What we uncovered went far beyond a simple comfort issue: the existing ventilation system was outdated, poorly calibrated, and unable to effectively filter the fine particles present in the outdoor air.
Project Background: Polluted Air Even in a Quiet Residential Area
The home was located in a wooded area, far from heavy traffic. However, due to its proximity to a major roadway and a lack of proper air renewal, concentrations of PM2.5 and ozone were entering the home daily.
The symptoms were clear:
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More frequent asthma attacks for the child,
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Throat irritation upon waking,
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A heavy, stagnant feeling in closed rooms.
Our sensors confirmed an abnormally high buildup of fine particles and CO₂ stagnation, caused by poor mechanical ventilation.
AirGreen’s Intervention: A Technical Response to a Health Concern
In-Depth Diagnosis and Environmental Analysis
Upon arrival, our technicians carried out a full inspection:
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Relative humidity measurement,
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Detection of CO₂ and VOCs (volatile organic compounds),
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Analysis of air intake and exhaust flow.
The results: the air exchanger installed 15 years ago was non-compliant, poorly maintained, and completely ineffective against outdoor pollutants.
Installation of a Venmar AVS N Series 160 CFM Air Exchanger
Given the situation, we recommended installing a Venmar AVS N Series HRV with 160 CFM airflow, a unit specifically designed to:
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Filter fine particles, pollen, and urban pollutants,
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Reduce CO₂ levels by effectively renewing ambient air,
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Adapt to medium and large-sized homes.
Its features include:
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Low-consumption ECM motor,
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Optional HEPA filtration compatibility,
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Wall-mounted smart controller for automatic adjustments based on air quality.
We also replaced all outdated rigid ducts with insulated ones to prevent heat loss and avoid outside air infiltration.
Installation Timeline
Our teams intervened within 48 hours, based on the customer’s availability:
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Removal of the old unit,
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Cleaning of existing ducts,
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Electrical connection and configuration of the smart control panel,
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System startup and full testing.
The full installation took less than a day, with no disruption to the occupants’ comfort.
Measurable Results: Restored Respiratory Comfort
The results were immediate:
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95% reduction in PM2.5 concentrations indoors,
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Elimination of stagnant odors in closed rooms,
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Easier breathing for the entire family, especially the asthmatic child.
The system runs continuously with variable airflow, automatically adjusting the ventilation based on real-time needs. In winter, it recovers heat from the outgoing air, which reduces heating bills by 12%.
Why This Installation Became a Model Project
This case in Longueuil has become a reference point for our team. It proves that even in a well-insulated home, the lack of a proper HVAC ventilation system can harm the occupants’ health.
Mistakes to Avoid Based on Our Experience
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Assuming air is clean because you’re far from traffic: smog travels.
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Believing that a 10-year-old HRV still performs well.
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Neglecting ductwork and air filter maintenance.
Our Long-Term Protection Advice
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Install a certified HRV or ERV air exchanger, depending on your building’s layout.
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Use a CO₂ sensor to regulate ventilation based on actual concentration levels.
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Replace filters every 3 to 6 months.
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Work with local HVAC companies who understand the specific climate needs of Montreal, Laval, Longueuil, South Shore and North Shore.
AirGreen: Expertise, Proximity, and Commitment to Public Health
At AirGreen, we don’t just install equipment. We protect our customers’ health by providing tailored, long-lasting solutions that meet the latest environmental standards.
Our strengths:
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A highly trained technical team,
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Thorough knowledge of current regulations,
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Ability to act quickly — even during intense smog periods,
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Full support in accessing available government grants.
Conclusion: Breathe Better, Live Better
Thanks to our intervention, this home in Longueuil is now a model of modern residential ventilation, where clean, healthy, and tempered air circulates year-round.
Do you live in Longueuil, Laval, or elsewhere in Greater Montreal, and have concerns about your air quality? Contact our AirGreen team today. Our HVAC ventilation specialists are ready to provide a concrete, customized, and fast solution.
AirGreen is your local partner for smart HVAC installation, focused on respiratory health, energy efficiency, and long-term comfort.