Laval, a dynamic and ever-growing city on the North Shore, is facing a major issue that’s often overlooked: the indoor air quality in residential homes. If you’re a homeowner in Laval or nearby, you need to know that the air you breathe every day inside your home has a direct impact on your health, comfort, and even your energy bills. At AirGreen, experts in ventilation and HVAC systems, we’ve compiled 5 must-know stats that show just how important it is to invest in proper residential ventilation.
Neglected ventilation harms the health of occupants
1. 45% of homes in Laval have humidity levels above recommended thresholds
According to residential inspection data, nearly half of all homes in Laval show indoor humidity levels above 60%. Such excess promotes mold growth, dust mites, and leads to chronic respiratory issues like asthma or sinus infections. By integrating a properly sized mechanical ventilation system, you can effectively stabilize these levels.
2. Indoor air can be up to 5 times more polluted than outdoor air
It’s a shocking stat, but one confirmed by Health Canada: the air we breathe indoors can contain up to five times more pollutants than outdoor air. This includes VOCs (volatile organic compounds), fine particles from cooking, cleaning products, or tobacco, not to mention gases like radon. A central ventilation system with a heat or energy recovery ventilator (HRV or ERV) can effectively renew indoor air while filtering out harmful particles.
The underestimated financial impact
3. 30% of energy consumption is linked to poor ventilation
A poorly designed or non-existent ventilation system can increase your heating or cooling load by up to 30%. Why? Because stale, humid air is harder to heat or cool, forcing your HVAC system to work overtime. By installing a high-efficiency air exchanger paired with a heat pump, like the ones we frequently install in Laval, you can significantly cut your yearly consumption.
4. A family of four produces over 10 liters of moisture per day into the air
Just through breathing, cooking, showers, and laundry, an average family releases several liters of water vapor into their home’s air every day. Without proper ventilation, this humidity stays trapped in your walls and ceilings, causing condensation, mold, deterioration, and heat loss.
Widespread lack of awareness among homeowners
5. 7 out of 10 Laval residents are unaware of the real state of their ventilation system
Based on our field experience at AirGreen, most homeowners in Laval don’t know whether their ventilation system is in good shape, if it’s properly sized for their home, or even if it’s still functioning. Many continue to rely on HRV systems installed over 20 years ago, with no filters or with blocked ducts. That’s why we offer a free full residential ventilation assessment in Laval, to evaluate actual needs and recommend concrete solutions.
Case study: a successful intervention in Laval-Ouest
We were recently called in to a single-family home in Laval-Ouest, where the residents were complaining about excessive condensation on windows, persistent odors, and unusual fatigue. Our team found that the home had an old, inefficient bathroom fan and an outdated HRV system.
We installed a Venmar EVO5 700 HRV air exchanger, connected to a Gree Lomo 18,000 BTU wall-mounted heat pump. The result? Immediate improvement in comfort, a noticeable reduction in odors, and a 22% drop in energy use in just the first month.
Why trust AirGreen in Laval?
At AirGreen, we take pride in our tailored, people-first approach. Our work goes far beyond simply installing equipment: we analyze each home’s environment, explain best practices for air quality, and train homeowners to use their systems effectively.
Here’s what sets our service apart:
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Free technical assessment of your current ventilation system
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Fast, professional installation of certified Energy Star air exchangers
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Personalized advice based on home size, occupancy, and lifestyle
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Support for applying to grants (LogisVert, RénoClimat, Hydro-Québec)
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Annual HVAC maintenance to ensure performance and longevity
Practical tips to improve air quality at home in Laval
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Air out each room for at least 10 minutes daily
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Clean or replace your system’s filters every 3 months
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Invest in a CO2 detector to monitor air quality
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Avoid toxic cleaning products and synthetic fragrances
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Have your ventilation ducts inspected every 3 to 5 years
Conclusion: Breathe better, live better
Indoor air quality in Laval isn’t a luxury — it’s a public health priority. As trusted experts in HVAC installation and residential ventilation, we have the tools, know-how, and experience to turn your home’s air into something clean, filtered, and balanced.
At AirGreen, we believe every Laval resident deserves to breathe clean air. Contact us today for a free ventilation evaluation and see how we can make a real difference in your comfort and health.