L’incroyable différence de qualité d’air avant et après l’installation d’un VRC à Longueuil (tests en direct)
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The Incredible Difference in Air Quality Before and After Installing an HRV in Longueuil (Live Testing)

An Air Exchanger Installation in Longueuil That Transforms Indoor Health and Comfort

In a single-family home in Longueuil, we recently installed a heat recovery ventilator (HRV) that delivered spectacular results on indoor air quality—with clear proof through tests conducted before and after our work. This real-world example highlights the incredible transformation a high-performance ventilation system can bring to daily life.

At AirGreen, we’re regularly called to resolve issues like excessive humidity, lingering odors, or constant airborne dust. In this specific case, the homeowners noticed a heavy sensation in the air, especially during winter when windows remain shut for long periods. Despite regular furnace maintenance, the air felt stale—and at times, even irritating to the respiratory system.

Why Choosing an HRV Is Essential in Longueuil

Common Urban Challenges

Longueuil, like many cities on the South Shore, is filled with homes that are well insulated… sometimes too well insulated. This blocks natural airflow. As a result, pollutants, humidity, CO₂, and other contaminants build up. An HRV becomes essential for bringing in fresh air while minimizing energy loss.

A Tailored Solution: Installation of a VENMAR AVS E15 ECM HRV

For this project, we recommended the VENMAR AVS E15 ECM, a heat recovery ventilator designed for homes up to 2,000 sq. ft. It features a high-efficiency ECM motor, a powerful heat recovery core, and a high-capacity washable filter.

Technical Specifications:

  • Model: VENMAR AVS E15 ECM

  • Type: HRV

  • Max airflow: 160 CFM

  • Energy recovery efficiency: Up to 75%

  • Eligible for subsidies: Yes, qualifies under energy efficiency programs in Quebec

Installation Timeline: Challenges and Achievements

Technical Assessment and Strategic Placement

Our team began with a full airflow analysis, a ventilation audit, and a ductwork assessment. The challenge here was limited basement space. We proposed a wall-mounted installation in the laundry room, running rigid ducts through the attic to reach main living areas.

Seamless Integration into the Décor

A frequent concern among homeowners is system visibility. We discreetly installed air distribution grilles into ceiling moldings. The wall control panel was placed next to the main thermostat for easy, intuitive access.

Live Testing Before and After Installation

To clearly demonstrate the impact, we performed two rounds of testing using a professional-grade indoor air quality monitor:

Before installation:

  • CO₂: 1350 ppm (too high)

  • Fine particles (PM2.5): 46 µg/m³ (above recommended levels)

  • Humidity: 62% (mold risk)

  • Odors: strong, especially in closed bedrooms

After installation (3 days later, HRV running at 70% capacity):

  • CO₂: 550 ppm (optimal level)

  • PM2.5: 8 µg/m³ (excellent air quality)

  • Humidity: 45% (comfort zone)

  • Odors: eliminated

What Our Clients Noticed Right Away

“It feels like we’re living in a different house. The air is lighter, we sleep better, and my daughter with asthma doesn’t cough at night anymore.”

This real testimonial shows how immediate and tangible the improvement is when an HRV is properly installed. The difference is measurable—but more importantly, it’s felt.

Why Choose AirGreen for an HRV Installation in Longueuil?

Deep Technical Expertise

At AirGreen, we don’t just install machines. We provide a comprehensive diagnosis, offer tailored solutions for each home, and ensure rigorous after-sales service. Our certified technicians are experts in residential ventilation standards, including those set by the National Building Code of Canada.

Eligibility for Grants

For this installation, our client received a $550 credit under the Rénoclimat program. We supported them through the application and ensured equipment compliance.

Clean, Seamless, Guaranteed Work

We guarantee all installations with a 10-year labor warranty, and we use equipment from only the most trusted manufacturers. Our team is punctual, cleans up thoroughly at the end of each visit, and stays available for post-installation questions.

Practical Advice: What to Do If Your Home’s Air Feels Stale

  • Check indoor humidity: if it’s over 55%, action is needed.

  • Monitor CO₂ levels if you have a detector.

  • Pay attention to physical symptoms: frequent headaches, morning fatigue, dry throat.

  • Call a specialized company like AirGreen for a free in-home evaluation.

Other HRV Installations on the South Shore

We’ve installed similar HRV systems in Brossard, Saint-Hubert, Saint-Bruno-de-Montarville, and Boucherville. Every project is unique, but they all share a key outcome: a fast and long-lasting improvement in indoor comfort and respiratory health.

In Conclusion

Installing a heat recovery ventilator (HRV) isn’t a luxury—it’s a necessity in modern homes that are well-insulated and often poorly ventilated. With our expertise, we turn stale, heavy environments into living spaces that are healthy, comfortable, and energy-efficient.

Do you live in Longueuil, Montréal, Laval, the North Shore, or the South Shore? Let us show you—through real results—what a professionally installed HRV can do for your home.

At AirGreen, we don’t just install a machine: we install long-lasting comfort.

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