The HRV: a silent but essential shield for healthy indoor air quality
At AirGreen, specialists in HVAC in Montréal, Laval, Longueuil, the North Shore and South Shore, we’re often called in by families struggling with invisible yet very real issues: persistent allergies, stubborn mold, high CO2 levels, chronic fatigue, frequent headaches... These symptoms, often brushed off, can point to one thing: polluted, poorly ventilated indoor air. That’s where an HRV (Heat Recovery Ventilator) becomes not just useful—but absolutely essential.
Understanding the danger: indoor air, a deceptive friend
Most people spend over 90% of their time indoors. Yet, indoor air is up to 5 times more polluted than outdoor air, according to Health Canada. And despite popular belief, opening a window isn’t enough. In our modern homes, built airtight and well insulated, pollutants get trapped: dust, mold spores, pollen, volatile organic compounds (VOCs), CO2, excess humidity… This cocktail can seriously affect your health and your loved ones’.
The key role of the HRV: smartly renewing your home's air
An HRV (Heat Recovery Ventilator) is far more than just a fan. It’s a controlled mechanical ventilation system that ensures constant renewal of indoor air, without wasting energy. It removes stale air (loaded with CO2, humidity, VOCs) and brings in fresh, filtered outdoor air while recovering heat from the outgoing air to temper the incoming air.
What does an HRV installed by AirGreen actually do?
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It removes excess humidity, reducing mold risk.
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It lowers CO2 levels, improving focus and sleep.
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It filters allergens (pollen, fine dust), relieving asthma and allergy sufferers.
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It cleans the air throughout the home, especially in damp areas like kitchens, bathrooms, or basements.
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It maintains stable indoor temperatures in winter by recovering up to 80% of the outgoing air’s heat.
Case study: AirGreen intervention in Boucherville, South Shore
A client contacted us due to severe, recurring allergies in their children. Their home, although new and well insulated, had constant humidity in the basement and lingering odors in the bedrooms. After conducting a comprehensive indoor air quality analysis, we recommended installing a Venmar AVS® N Series 160 CFM HRV with heat recovery and HEPA filtration.
The installation took one full day:
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Created independent duct systems to ensure balanced ventilation between floors.
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Adjusted airflow room by room based on needs (kitchen, bathrooms, bedrooms).
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Integrated the HRV with the client’s smart central thermostat for optimal control.
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Final performance test post-installation: humidity dropped from 60% to 45%, CO2 levels dropped from 1300 ppm to 620 ppm in 24 hours.
The result: fewer allergy symptoms, fresher air, better quality sleep, and visible reduction of mold on basement walls.
Why trust AirGreen with your HRV installation?
Recognized HVAC installation expertise
With hundreds of ventilation system installations across Montréal, Laval, Longueuil, the North Shore and South Shore, we’ve developed a precise, tailored approach for every type of building: condos, single-family homes, rental properties, and commercial buildings.
Custom solutions, never generic
Every home has its challenges: limited duct space, ambient noise control, complex layouts… Our technicians take the time to analyze each variable to deliver a 100% tailored solution.
Carefully selected top-performing HRVs
We work with trusted brands like Venmar, Lifebreath, Fantech, Broan, and Aldes, all eligible for energy efficiency grants available in Québec.
Flawless after-sales service
We provide technical support, maintenance visits, and tailored advice to optimize your system’s performance over time.
What you can do today
Signs your home may need an HRV
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Frequent condensation on windows
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Persistent odors (dampness, cooking, pets)
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Allergies or headaches with no clear cause
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Humidity above 50% in certain rooms
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Visible mold or musty smells
If one or more of these sound familiar, it’s time to get your indoor air quality professionally evaluated by AirGreen.
Available grants for HRV installations
The Rénoclimat program offers grants of up to $500 for certified HRV installations. In addition, cities like Longueuil and Laval offer additional incentives as part of energy-efficient renovation programs.
We guide you through every step of the grant process, from choosing eligible equipment to submitting the necessary paperwork.
HVAC maintenance: the long-term ally of your HRV
Like any HVAC equipment, an HRV needs regular maintenance:
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Filter cleaning every 3 to 6 months
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Ductwork and airflow checks
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Motor and fan inspections
At AirGreen, we offer annual or semi-annual maintenance packages to ensure long-lasting, quiet, and efficient operation of your HRV.
Conclusion: investing in an HRV is investing in your health
A well-installed and well-maintained HRV doesn’t just ventilate—it transforms your home environment. At AirGreen, we believe that the quality of the air you breathe is just as important as your thermal comfort. That’s why every system we install is designed to last, perform, and adapt to your everyday life.
Dealing with stuffy, humid air or high CO2 in your home? Contact AirGreen today for a tailored evaluation and professional HRV installation in Montréal, Laval, Longueuil, the North Shore or South Shore.