A Striking Case Study on the Importance of a Proper Air Exchanger in a Typical South Shore Home
In a single-storey residence located on the South Shore, our team recently carried out a project that clearly illustrates the radical difference between a well-ventilated home and one that has become toxic. What began as a routine service call quickly revealed a chronic ventilation problem with far more serious health and comfort consequences than initially expected.
The client first contacted us about persistent kitchen odors, despite having a high-performance range hood and regularly opening windows. However, from our first visit, we identified a set of symptoms typical of unhealthy indoor air: elevated CO₂ levels, stagnant humidity, invisible mold detectable by smell, and unusual morning fatigue reported by the whole family.
When Air Turns Toxic: Understanding the Invisible but Dangerous Signs
A Common Yet Underestimated Issue on the South Shore
Well-insulated homes, especially in recent residential developments in Longueuil, Brossard, and Boucherville, often suffer from a serious lack of mechanical ventilation. Without controlled fresh air intake, household pollutants (cooking smoke, cleaning product vapors, moisture from human activity, etc.) accumulate and create a truly invisible toxic cocktail.
Symptoms Observed in This Case
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Breathing discomfort upon waking
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Lingering odors despite natural ventilation
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Condensation building up on windows
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CO₂ level measured at 1,300 ppm by mid-day
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Indoor humidity steady at 68%, ideal for mold growth
The Proposed Solution: Installation of an Energy Recovery Ventilator (ERV)
After a full evaluation of the infrastructure and consultation with the client, we installed a Fantech energy recovery ventilator (ERV), model Flex 100H. This is a compact unit, ideal for homes with limited space, yet powerful enough to ensure continuous air renewal while preserving heat gains during the winter.
Technical details of the installed system:
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Model: Fantech Flex 100H
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Maximum airflow: 104 CFM
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Heat recovery efficiency: up to 72%
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Wall-mounted installation in the crawl space
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Smart wall controls with programmable timer
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Eligible for Rénoclimat and LogisVert subsidies
The Installation Process: A Quick Yet Strategic Project
Key Steps of the Job
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Full home assessment including airflow measurement and balanced ventilation simulation
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Strategic equipment placement to minimize duct lengths
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No demolition required: precise drilling, installation of insulated ducts, and connection to the existing electrical circuit
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Post-installation testing with real-time analysis of improved air quality
Immediate and Measurable Results
Three days after ERV activation:
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CO₂ dropped to 540 ppm
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Humidity stabilized at 45%
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Odors completely gone
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No more window condensation
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Noticeable freshness and lightness throughout the house
Client Testimonial: A Tangible Transformation in Daily Life
“Honestly, we never imagined air could change our comfort so much. Since the installation, we sleep better, wake up without headaches, and the whole house feels more alive.”
This spontaneous feedback shows a growing awareness among many homeowners: when properly renewed, indoor air becomes a critical factor for health, comfort, and energy performance.
Why Choose AirGreen for Your Air Exchanger Installation on the South Shore?
An Approach Rooted in Precision and Real-World Experience
At AirGreen, we don’t offer generic solutions. Every HVAC installation begins with a personalized assessment, backed by scientific measurements and real expertise gained through dozens of residential and commercial projects throughout Montréal, Laval, Longueuil, the North Shore, and the South Shore.
Eligibility for Government Rebates
Our client received a combined $775 credit through the Rénoclimat and LogisVert programs. We handled all administrative steps: model validation, proof of installation, and energy performance declaration.
Full Warranty and Local After-Sales Support
We offer a 10-year warranty on the installation, and remain available for HVAC maintenance over time. All installed parts meet CSA standards, and our team provides responsive, local service throughout the greater Montréal area.
Tips to Prevent Your Home from Becoming Toxic
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Have your CO₂ and relative humidity levels tested
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Don’t rely solely on natural ventilation (opening windows is not enough)
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Watch for physical symptoms (eye irritation, headaches, constant fatigue)
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Contact a professional for a free inspection and on-site estimate
Similar Interventions Across Montréal and Both Shores
This isn’t an isolated case. We’ve completed similar installations in Vaudreuil, Saint-Hubert, Laval, Saint-Lambert, and Repentigny, with comparable results. The gain in comfort and health is often immediate and long-lasting.
Conclusion
A well-ventilated home isn’t a luxury—it’s a modern necessity. Without mechanical ventilation, even a well-insulated house can become a toxic trap. Thanks to our expertise and professional HVAC solutions, we help clients transform their indoor environments—from stale and polluted to clean and purified—in just a few days.
Do you live in Montréal, Laval, Longueuil, the North Shore, or the South Shore? Reach out to discover what a properly installed air exchanger can truly change in your daily life.
At AirGreen, we don’t sell promises—we deliver real, measurable comfort.