Health and Ventilation: Those Strange Symptoms That Disappeared Thanks to AirGreen in Laval (Real Testimonials)

When a simple air exchanger changes lives: the surprising story of several families in Laval

In Laval, more and more families are experiencing unexplained health issues: chronic fatigue, recurring headaches, persistent allergies, trouble sleeping. Subtle but stubborn symptoms often blamed on stress, the weather, or routine. But what if the source of the problem is the very air you breathe at home? At AirGreen, we’ve collected several testimonials from Laval residents whose lives were genuinely transformed after the installation or upgrade of their mechanical ventilation system (HRV or ERV).

Testimonial #1 – Fabreville: the nighttime cough that vanished overnight

Ms. Lévesque, mother of two, lives in a 1980s home in Fabreville, near Highway 13. Her 9-year-old son had been suffering from an unexplained nighttime cough for nearly two years, with no allergy detected. After many doctor visits and tests, a friend suggested looking into indoor air quality. That’s when she contacted us for a complete inspection of her ventilation system.

AirGreen's diagnosis

• An old Venmar air exchanger, 18 years old, heavily clogged

• Filters never replaced, with partially blocked ventilation

• No CO₂ detection or humidity control

Installed solution

We proposed installing a Lennox HRV 3-150 air exchanger, equipped with HEPA filters, an integrated humidity sensor, and a smart connected management system.

Result: the cough disappeared in three days. Ms. Lévesque wrote to us a few weeks later: “We’re sleeping again. We breathe better. And my son hasn’t coughed since, even in winter.”

Testimonial #2 – Duvernay: chronic migraines linked to poor ventilation

Mr. Gauthier, working from home since the pandemic, was suffering from migraines several times a week. He changed his screen, adjusted his lighting, drank more water… nothing helped. During a friend’s visit, the guest noticed stale, heavy air in the home office. Curious, Mr. Gauthier reached out to AirGreen.

What we found

• Unbalanced ventilation between rooms

• A faulty, noisy HRV unit, never maintained

• No fresh air supply in the closed office space

Intervention and results

We installed a Lennox ERV HRV5-150 system with adjustable zoning, ideal for homes with enclosed or office-style spaces. A fresh air intake was added specifically in the office, with an activated carbon filter.

Outcome after 10 days: no more migraines, increased energy, better focus.

Why indoor air in Laval deserves your attention

Modern homes are increasingly airtight, especially on the North Shore. While this improves energy efficiency, it also prevents natural air renewal. The result: CO₂ buildup, VOCs (volatile organic compounds), excess humidity… and all the health consequences that come with it.

A properly sized and maintained mechanical ventilation system is the key to clean, stable indoor air.

Brands and models we recommend in Laval

At AirGreen, we frequently install the following models:

• Lennox HRV3-150 and HRV5-200 for single-family homes

• Lennox ERV units with enthalpic heat exchange for humid areas

• Systems with HEPA filters + smart sensors

• Easy integration with smart thermostats (Ecobee, Nest, etc.)

Other symptoms that proper ventilation can relieve or eliminate

• Non-restorative sleep

• Excessively dry or humid air

• Waking up congested

• Morning fatigue or tight chest

• Eye irritation or throat discomfort

Why trust AirGreen to improve your home’s ventilation in Laval

• Certified technicians specialized in residential ventilation

• Fast, personalized service in all Laval districts (Chomedey, Duvernay, Fabreville, Saint-François…)

• Access to Hydro-Québec’s LogisVert rebates

• Annual HVAC maintenance plan including inspections, cleaning, and filter replacement

• Transparent, responsive after-sales service

At AirGreen, breathing better means living better

Our installations in Laval prove that indoor air has a real impact on health. Too often overlooked, ventilation can truly transform your daily life. With our expertise, precision, and attention to detail, we do more than install machines: we improve lives.