Improving a home's energy efficiency isn't just about changing windows or installing a high-performance heat pump. All too often, the air exchanger is overlooked in energy renovation projects. And yet, this essential component plays a key role in indoor air quality, thermal comfort, and even long-term energy savings. At AirGreen, we firmly believe that a good controlled mechanical ventilation (CMV) system is the foundation of a healthy, efficient, and sustainable home.
Why the Air Exchanger Is a Crucial Link in Energy-Efficient Renovations
The Essential Role of the Air Exchanger
An air exchanger ventilates an airtight home while recovering heat from the stale air being removed. This means that fresh outdoor air is preheated (or pre-cooled depending on the season) before entering the home, reducing the workload of heating or cooling systems. In a context where modern homes are increasingly airtight for energy efficiency reasons, a proper air renewal system becomes indispensable.
Preventing Humidity, Mold, and Airborne Contaminants
Without proper ventilation, humidity quickly builds up in enclosed spaces, especially in kitchens, bathrooms, and basements. This promotes the growth of mold, unpleasant odors, and even respiratory issues for occupants. A heat recovery ventilator (HRV) or energy recovery ventilator (ERV) ensures optimal air quality while maintaining a comfortable indoor temperature.
The AirGreen Experience: Our Hands-On Approach to Air Exchangers
Expertise Rooted in Montréal, Laval, Longueuil, North Shore and South Shore
At AirGreen, we’ve installed hundreds of air exchanger systems across the Greater Montréal area, from Laval and Longueuil to the North Shore and South Shore. Each project has allowed us to solve unique ventilation challenges. Here are a few real-world examples.
Longueuil Example: HRV in a Renovated Century-Old Home
We recently worked on a fully renovated century-old home in Longueuil. The owner wanted to improve indoor air quality while meeting new energy-efficiency standards. We installed a Venmar EVO5 700 HRV that was compatible with the existing layout. The challenge: integrating the ductwork into old ceilings without compromising the aesthetic. The result: a seamless integration, perfectly balanced ventilation, and a happy customer who eliminated recurring humidity problems.
Laval Project: Ventilating a Duplex with Asthmatic Children
In Laval, a family with two asthmatic children was looking for a solution to improve air quality without energy losses. We selected an energy recovery ventilator (ERV) from Fantech, equipped with HEPA filters. Thanks to a balanced distribution and regular maintenance by our team, the indoor air became noticeably healthier, and the children's symptoms significantly improved.
Technical Advantages of a Well-Chosen Air Exchanger
Measurable Energy Savings
A high-performance air exchanger, such as models from Venmar, Lifebreath or Fantech, can recover up to 70 to 90% of the heat from the extracted air. This translates into lower heating bills during winter and reduced cooling costs in summer. This gain is particularly important in regions like Montréal, where winters are long and harsh.
Eligibility for Government Grants
Did you know that several air exchanger models are eligible for government rebates, especially under energy retrofit programs such as Hydro-Québec's LogisVert or municipal incentives in Montréal, Laval, or Longueuil? At AirGreen, we help our clients access these financial incentives, significantly reducing the upfront investment.
Mistakes to Avoid When Choosing or Installing an Air Exchanger
Neglecting System Balancing
A poorly balanced system can create negative or positive air pressures inside the home, leading to cold air infiltration, odors, or excessive energy consumption. That’s why every AirGreen installation includes a thorough air flow check in every room and custom adjustments for optimal performance.
Choosing an Undersized Unit
Too many homeowners pick an air exchanger based on price or an approximate home size. That’s a common mistake. At AirGreen, we perform a precise calculation of the required air volume based on occupancy, use, and architectural specifics of the building. We then select the right model and airflow capacity to ensure efficiency and comfort.
Maintenance Tips to Extend the Life of Your Air Exchanger
Regular maintenance is essential to keep your air exchanger running smoothly. This includes:
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Cleaning or replacing filters every 3 to 6 months
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Checking intake and exhaust grilles to prevent blockages
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Annual inspection of ducts and motor, performed by an AirGreen professional
We offer custom HVAC maintenance contracts for residential and commercial clients throughout Greater Montréal.
Why Choose AirGreen for Your Air Exchanger Installation
A Team Dedicated to Your Well-Being
At AirGreen, our expertise goes far beyond sales and installation. We support our clients from start to finish, from the initial assessment to long-term maintenance, including grant application assistance and after-sales service.
Concrete, Lasting Results
Our work across Montréal, Laval, Longueuil, North Shore, and South Shore speaks for itself. Every client receives a tailor-made system, designed to maximize energy performance, ensure healthy indoor air, and adapt to Québec’s climate realities.
Conclusion
Integrating an air exchanger into an energy-efficient renovation is a smart decision—often overlooked, but always rewarding. At AirGreen, we turn that investment into a daily benefit, both tangible and long-lasting. Whether you’re renovating an older home or building a new property, our team is ready to guide you toward the HVAC ventilation solution best suited to your needs and budget.
Contact us today for a free evaluation and discover how an air exchanger can transform your daily life.