Living in a condo in Montréal, Laval, or on the South Shore or North Shore comes with many benefits: proximity to services, security, simplified management. However, one critical mistake continues to cost many property owners dearly: neglecting the ventilation of their unit. At AirGreen, we frequently encounter situations where a lack of proper ventilation leads to premature building deterioration, poor indoor air quality, and significant unexpected expenses.
The Vital Importance of Ventilation in a Condo
Unlike single-family homes, condos are often more confined spaces, with fewer opening windows and a design focused on airtightness. This layout makes a central or standalone ventilation system even more essential. A poorly ventilated condo doesn’t allow humidity, contaminants, or carbon dioxide to escape, which harms not only comfort but also the health of its occupants.
The Most Common Mistake: Thinking That Air Circulates “Naturally”
Many condo owners believe that bathroom fans or range hoods are enough to ensure good air circulation. However, these appliances do not make up a real ventilation system. They evacuate pollutants temporarily but do not effectively renew indoor air. This false sense of security leads to the invisible buildup of contaminants, mold, and excessive humidity.
Case Study: A Condo in Griffintown Without an Air Exchanger
Recently, our team was called in to assess a 900 sq. ft. condo located in Griffintown. The owner, a young professional, was experiencing frequent headaches and recurring mold around window corners. After inspection, we discovered there was no air exchanger and the indoor humidity level was at 68%. We recommended installing a central Venmar AVS HRV ventilation system, equipped with a heat recovery unit, which brought humidity down to 45% within days, significantly improved air quality, and eliminated persistent odors.
What Does Québec Building Code Say?
The Québec Construction Code requires that all new homes be equipped with a mechanical ventilation system compliant with CSA F326 standards. However, this requirement doesn’t always apply to buildings built before 2001. As a result, many older condos in downtown Montréal, Saint-Lambert, or Laval-des-Rapides do not have adequate ventilation systems. That’s exactly where we come in.
Signs Your Condo Has a Ventilation Problem
Here are some common signs we often observe among our clients:
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Condensation on windows
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Mold in corners or around vent covers
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Persistent or musty odors
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Stuffy or heavy air
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Allergy symptoms, frequent headaches, or constant fatigue
The Best Ventilation Solutions for Condos
At AirGreen, we assess each case individually. Here are the most effective solutions we offer:
1. Central Air Exchanger (HRV or ERV)
Ideal for condos over 700 sq. ft., this system allows for heat recovery and ensures continuous air renewal, without significant energy loss.
2. Smart Spot Ventilation
For small condos or studios, we recommend units like the Panasonic WhisperComfort ERV, which can be easily integrated into drop ceilings and operate quietly.
3. Integrated HVAC Systems (with heat pump)
Some of our clients take advantage of a heat pump replacement project to integrate a combined ventilation system, such as units from the Fujitsu KZAH or Bosch BIVA IDS Premium R-454B series, which allow for heating, cooling, and ventilation in one efficient setup.
Why Choose AirGreen?
Our expertise comes from hundreds of installations carried out in Montréal, Laval, Longueuil, and across the North and South Shores. We handle everything: on-site evaluation, product selection adapted to your space, discreet installation, and HVAC maintenance. Plus, we’re fully versed in all the available grant programs, like Hydro-Québec’s LogisVert program, which can cover part of the cost if you upgrade your condo’s energy efficiency.
Client Testimonial: A Transformed Condo in Saint-Hubert
Ms. Leclerc, owner of a 4½ condo in Saint-Hubert, contacted us after several complaints from her tenant about humidity issues. After an inspection, we installed a Venmar EVO5 700 HRV system, tailored to the limited space in her drop ceiling. Three months later, Ms. Leclerc wrote to tell us that not only was the air fresher and drier, but her tenants were sleeping better and no longer needed a dehumidifier.
Practical Tips for Condo Owners
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Have your condo inspected every 3 years by an HVAC professional
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Request an airflow test to check the effectiveness of your current system
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Make sure your vent covers are not blocked
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Plan for yearly cleaning of ducts and filters
The Price of a Mistake: What You Risk by Ignoring Ventilation
Failing to invest in proper ventilation means risking:
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Costly structural damage caused by humidity
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A drop in your condo’s value at resale
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Health problems for you or your tenants
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Increased energy consumption due to an inefficient HVAC system
Conclusion: Trust AirGreen’s Expertise
At AirGreen, we believe that air quality is a fundamental pillar of residential comfort. In condos, it’s even more critical. Whether you’re in Boisbriand, Brossard, Laval, or downtown Montréal, our team is here to help you improve your quality of life, protect your real estate investment, and ensure your unit meets the highest HVAC ventilation standards.
Contact us today for a free evaluation. Together, let’s give your condo healthy air that’s built to last… and worth the investment.