A vital system that’s often overlooked when it comes to urban quality of life
In a city like Montréal, densely populated, heavily urbanized, with harsh winters and humid summers, indoor air quality is a major concern for both health and energy efficiency. At AirGreen, we see firsthand every day how a good or bad residential ventilation system can affect occupants’ health, thermal comfort, energy consumption, and even property value.
Installing a new generation air exchanger is no longer just a luxury or add-on. For many homes in Montréal, it’s an urgent necessity, driven by unique local conditions, increasingly strict regulations, and rising occupant expectations for indoor well-being.
Why is indoor air such a recurring problem in Montréal?
A city that’s insulated—sometimes too insulated
With ongoing efforts to improve energy efficiency since the 1980s, most homes and buildings in Montréal, Laval, Longueuil, the North Shore and South Shore have been transformed into veritable “thermoses.” The catch: a home that’s well insulated, without proper mechanical ventilation, traps humidity, pollutants, and odors, creating an unhealthy mix.
Common symptoms? Window condensation, lingering odors, mold, allergies, and chronic fatigue. All of these issues get worse in winter when windows remain shut for months.
Québec’s climate presents a double challenge
The harsh winter cold demands excellent insulation and makes opening windows for air circulation impractical. On the other hand, summer brings heavy humidity, especially in homes without effective air conditioning. This leads to stagnant air and the proliferation of pollutants (dust, VOCs, bacteria, mold).
That’s where new generation air exchangers, with heat or energy recovery (HRV or ERV), truly shine.
The technological evolution of air exchangers: A solution that meets the challenge
From basic fans to intelligent systems
Today’s models — like those we install at AirGreen — go far beyond simply exchanging air. They recover heat (or cooling), automatically adjust airflow, filter pollutants, and some even integrate CO₂ and humidity sensors to adjust performance based on actual occupancy needs.
Among the brands we recommend:
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Venmar AVS® N Series: equipped with ultra-efficient ECM motors, optional HEPA filters, and mobile app control.
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Fantech VHR: very robust, ideal for large homes or multi-unit buildings.
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Panasonic Intelli-Balance®: smart sensor technology, ultra-quiet, compatible with high-performance homes.
Real-life case: AirGreen’s intervention in a residence in Outremont
A few months ago, a family living in Outremont was dealing with recurring mold in their renovated basement. Despite using dehumidifiers and having proper heating, the issue persisted.
After a full air quality assessment by our team, we identified a lack of air renewal and excessive humidity levels (>70%). We recommended and installed a Venmar N160E energy recovery air exchanger, integrated into their existing duct system.
The result? A significant improvement in air quality within two weeks, dry walls, and a complete disappearance of persistent odors. The family even reported a reduction in their children’s allergy symptoms.
Why this technology directly concerns you
Are you a homeowner in Montréal or the surrounding suburbs?
Maybe you live in an older renovated home, a new Novoclimat-certified build, or a traditional plex. In every case, the need for controlled ventilation is real, especially if you have:
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High-performance insulation
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Children or elderly individuals at home
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Combustion appliances (stove, boiler, fireplace)
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Pets
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A finished basement
Are you a property manager or real estate developer?
In multi-residential projects, high-performance air exchangers are increasingly required in technical specifications. Their integration not only supports overall energy efficiency, but also reduces future maintenance costs tied to moisture and air quality issues.
Common mistakes to avoid
1. Installing an undersized model
An air exchanger that’s not suited to the size or layout of the home will be largely ineffective. At AirGreen, we always conduct a precise calculation of required airflow rates.
2. Skipping maintenance
Even the best model will clog over time. We recommend cleaning filters every 3 to 6 months, and a full maintenance check every year.
3. Confusing HRV and ERV without a proper assessment
The choice between HRV (Heat Recovery Ventilator) and ERV (Energy Recovery Ventilator) depends on several factors: indoor humidity levels, local climate, heating type. We always advise our clients on the most suitable solution.
Grants and programs available
Financial assistance programs make the installation of an air exchanger much more affordable. For example:
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Rénoclimat Program: up to $650 for installing a certified system.
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Hydro-Québec’s LogisVert: may apply if the system is part of a broader energy efficiency upgrade.
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RénoVert Tax Credit (if extended): for eligible eco-friendly renovations.
AirGreen’s expertise: full-service support
At AirGreen, we’re not just installers. We act as trusted CVAC advisors, evaluating each case individually and offering turnkey service:
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Indoor air quality diagnosis
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Personalized recommendations
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Selection of the best system (brand, power, type)
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Professional installation meeting all standards
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Ongoing maintenance and after-sales support
A long-term investment in your health and comfort
Installing a new generation air exchanger is a strategic investment. It protects your home’s structure, improves your health, lowers heating or cooling costs, and increases your property value.
In a city as lively, dense, and weather-challenged as Montréal, this technology is far from a luxury. It’s become an essential part of a healthy, energy-efficient, and comfortable home.