Air exchangers are at the heart of indoor air quality, yet few people realize how much they can transform the comfort of a home. Here are ten surprising questions our clients ask regularly — and our detailed answers.
Why install an air exchanger if I already have a heat pump or a central heating system?
At AirGreen, we often hear this question in Montréal, Laval, or Longueuil. A heat pump or central heating system handles thermal comfort, but an ERV/HRV plays a very different role: it renews the indoor air by evacuating stale air (loaded with moisture, CO₂, household pollutants) and replacing it with fresh outside air, while minimizing heat loss. This improves air quality, reduces mold, and protects your family’s health.
What’s the difference between an HRV and an ERV?
This is one of the most frequently asked questions at our projects on the North Shore and South Shore. An HRV (heat recovery ventilator) recovers heat from outgoing air to temper incoming air. It’s ideal for cold climates like Montreal. An ERV (energy recovery ventilator), on the other hand, recovers both heat and moisture, making it useful in more humid climates. We often recommend the HRV for modern Quebec homes that are well-insulated.
Will I feel drafts in my home?
No, if the installation is done properly. Our certified AirGreen technicians carefully balance the airflow. The exchanger runs continuously at a low speed, ensuring a discreet and even air renewal. No drafty sensations are felt if the unit is correctly sized, well-installed, and the distribution system is balanced.
Can I connect an air exchanger to my existing ventilation system?
Yes, and this is often what we do. During our installations in Longueuil or Brossard, we often integrate the ERV/HRV ducts into the ductwork of the furnace or central heat pump. This allows for effective distribution of fresh air throughout the house. However, this must be carefully planned to avoid pressure loss and ensure optimal performance.
Is the installation of an HRV eligible for grants?
Absolutely. Various financial aid programs, like Rénoclimat or LogisVert, offer incentives for installing an ENERGY STAR certified air exchanger. At AirGreen, we help our clients in Laval, Montreal, and the South Shore with all administrative steps to maximize their credits and grants.
Should my air exchanger run in the summer too?
Yes. In summer, even though windows are open more often, the air exchanger remains useful for maintaining good air quality and removing indoor pollutants (household products, cooking vapors, excessive humidity). In new homes that are very airtight, it is recommended to run it year-round.
Does the air exchanger’s filter need to be changed often?
Yes, this is crucial for ensuring good performance. Filters should be cleaned or replaced about every 3 to 6 months, depending on the environment (dust, pets, pollen). During our seasonal maintenance visits in Terrebonne or Saint-Bruno, we always include cleaning the ERV/HRV, including its filters, collection trays, and fans.
Does the air exchanger make noise?
Recent models like the Venmar AVS N Series, the Fantech FLEX 100H, or the Lifebreath 195 MAX are designed to be extremely quiet. During our installations in Saint-Eustache or Boucherville, we make sure to use acoustic-insulated ducts and install the unit in a technical room away from living spaces, like a mechanical room or basement storage.
Can an HRV improve my winter comfort?
Yes. A good air exchanger preheats the incoming air using heat from the outgoing air, thus reducing the cold sensation typical of air infiltration in winter. It helps maintain optimal thermal comfort while benefiting from renewed and better-quality indoor air. In several projects in Laval, we noticed a reduction in excessive humidity and a notable improvement in comfort in the bedrooms.
What is the lifespan of an air exchanger?
With regular maintenance, a quality air exchanger can last between 15 and 20 years. At AirGreen, we only install reliable and certified brands, and we also offer annual maintenance plans to extend the lifespan of the equipment. In Montreal, we still have HRVs installed in 2005 that, thanks to our regular maintenance, continue to deliver excellent performance.
Our Practical Tips for Optimizing Your Air Exchanger
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Have the exchanger cleaned once a year.
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Change the filters regularly.
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Ensure the outside air intakes are clear (free from snow or leaves).
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Check the slopes of the ducts to prevent water accumulation.
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Never disconnect your HRV in winter, as this could lead to excessive humidity and mold growth.
Customer Testimonials from Montreal and the South Shore
In Candiac, a client suffering from respiratory allergies saw their comfort dramatically improved after installing a Venmar E15 ECM ERV. In Boisbriand, a couple noticed a significant reduction in humidity and lingering kitchen odors in their new home thanks to the Lifebreath 155 MAX installed by our team.
Why Choose AirGreen for Your Air Exchanger
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Certified expertise in HVAC installations across the Montreal area.
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Personalized guidance for selecting the right model (HRV or ERV) for your home.
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Rigorous after-sales service, including maintenance plans and support with grant applications.
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Over 15 years of experience on residential, commercial, and multi-unit projects.
Trust our team to guide you through the world of air exchangers. At AirGreen, we don't just install equipment: we create healthy, durable, and comfortable environments.