Poor ventilation can quickly turn a comfortable home into an olfactory nightmare. In Longueuil, many homeowners and building managers reach out to us every year due to persistent odors in their homes or commercial spaces. At AirGreen, we know these nuisances are more than just inconvenient — they are often signs of a ventilation system that is inefficient, poorly maintained, or poorly designed. This article explores in detail the common causes of persistent odors, installation or maintenance errors, and the concrete solutions we’ve implemented for our clients on the South Shore, including Longueuil.
A Common Issue in Residential and Commercial Buildings
Lingering odors, whether coming from the kitchen, humidity, pets, or even sewer backflow, should normally be efficiently removed by a properly calibrated ventilation system. However, many buildings in Longueuil are equipped with systems that are undersized, unbalanced, or clogged due to a lack of maintenance.
Typical Signs of a Failing Ventilation System:
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Persistent odors in certain rooms, even after airing out
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Excess humidity in the bathroom or kitchen
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Stale or musty air sensation
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Visible mold around air vents
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Large temperature differences between rooms
At AirGreen, we’ve developed a comprehensive approach to diagnose and fix these issues.
Case Study: AirGreen Interventions in Longueuil
We were recently called for a single-family home in the Vieux-Longueuil neighborhood. The homeowner complained of a recurring musty smell, especially after taking a shower or when using the kitchen range hood. Our team conducted a full inspection of the existing ventilation system, which revealed several issues:
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Ducts clogged with dust and grease residues
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An outdated single-flow HRV, unable to extract enough stale air
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Lack of cross-ventilation between the home’s different areas
We proposed a complete replacement with a high-performance double-flow HRV, with automatic summer bypass, as well as a full duct cleaning and disinfection. Result: total disappearance of the odors and a noticeable improvement in thermal comfort.
Why Ventilation Systems Fail
1. Incorrect Sizing
An undersized ventilation system can’t extract enough stale air, especially in large houses or multi-unit buildings. This common mistake often results from poor planning or installations done without a proper airflow analysis.
2. Lack of or Poor Maintenance
A poorly maintained system loses up to 30% of its efficiency after just a few years. At AirGreen, we recommend an annual HVAC maintenance, which includes:
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Duct cleaning
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Airflow verification
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Mold and bacteria disinfection
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Filter replacement
3. Low-Quality or Outdated Equipment
Old fans or low-capacity kitchen hoods are often obsolete. We recommend installing modern systems, such as those from Venmar or Aldes, featuring ECM motors with low energy consumption and constant pressure, ideal for Quebec’s climate.
Practical Solutions Offered by AirGreen
Personalized Building Assessment
Before making any recommendation, we carry out a thorough analysis of your building’s thermal envelope, airflow patterns, and odor sources. This step is critical to proposing a tailored solution.
Installation of Centralized Ventilation Systems
For new or renovated homes, we install centralized double-flow systems that ensure balanced ventilation while recovering up to 90% of the heat from the extracted air.
Wall-Mounted or Decentralized Solutions
In existing homes where duct installation is complex, we offer decentralized wall-mounted systems, such as the Tempeff or Blauberg product lines, which are efficient, aesthetically pleasing, and easy to maintain.
Professional Maintenance and Follow-up
We offer annual HVAC maintenance contracts, with automatic reminders, priority service, and discounts on parts. This formula ensures your ventilation system runs optimally, year after year.
Available Grants for Ventilation in Longueuil and the South Shore
Did you know some ventilation projects may qualify for government grants? For example:
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Rénoclimat Program
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Chauffez vert Program (in certain energy conversion cases)
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Occasional municipal subsidies
Our advisors provide free assistance in preparing your grant applications, helping you maximize your return on investment.
Recognized Expertise in Longueuil and Across the South Shore
With more than 10 years of experience in residential and commercial HVAC, AirGreen has become a trusted name on the South Shore. Our approach stands out through:
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Fast, no-surprise interventions
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Deep technical expertise in ventilation, air conditioning, and heating
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Reliable, responsive after-sales service
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Installations that meet Québec’s strictest standards
Tips to Prevent Odors in Your Home
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Regularly ventilate frequently used rooms
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Have your ventilation system inspected every 2 years
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Use HEPA filters and change them as recommended
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Avoid blocking supply or exhaust vents
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Choose double-flow systems with heat recovery
Trust AirGreen for Your Ventilation Needs in Longueuil
If you're dealing with persistent odors in your home or business in Longueuil, don’t wait for the situation to get worse. Poor indoor air quality can affect your comfort, your health, and even your property’s value. At AirGreen, we bring our expertise to serve your well-being, with effective, durable, and certified ventilation solutions.
Contact us today for a personalized assessment and a free quote. Our technicians quickly serve all areas of Longueuil, as well as the entire South Shore, North Shore, Montréal, Laval, and Longueuil.