When Poor Ventilation Threatens the Operations of a Local Business
In the field of commercial HVAC, the consequences of a poor installation or an inadequate system can quickly become a nightmare for small business owners. That’s exactly what happened to an artisanal workshop located in Laval, which was forced to temporarily shut its doors due to a critical failure in its ventilation system. At AirGreen, we were urgently called in to assess the situation, fix the issues, and restore a healthy and safe environment—once again demonstrating our field expertise.
A Critical Situation: Odors, Humidity, and Unhealthy Conditions
The business, which specializes in making natural candles and handcrafted products, had been experiencing persistent issues for months: lingering odors, excessive condensation on the walls, and heavy, stale air. Despite a recently installed mechanical ventilation system—put in by another contractor—the space clearly showed signs of inadequate air exchange. Stale air was building up, chemical fumes lingered, and this was jeopardizing both the health of the artisans and the quality of their products.
On-Site Diagnosis: A Poorly Designed Duct Network
As soon as we arrived, our team carried out a comprehensive inspection of the ventilation network. Several major flaws were immediately identified:
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No airflow calculations were done based on the workspace volume or the fine particle emissions.
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Poorly positioned exhaust vents, concentrated in just one area, leaving other rooms without proper extraction.
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Overly long and crushed flexible ducts, which significantly reduced airflow.
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No intake of fresh air, creating constant negative pressure in the building.
These failures led to a build-up of pollutants, forcing the business owner to shut down temporarily in order to protect their employees.
Our Response: A Custom Ventilation Solution
At AirGreen, we know that every workspace requires a precise, secure, and customized HVAC ventilation solution. For this Laval workshop, we implemented a comprehensive approach:
Step 1: Thermal and Air Renewal Calculations
Our technicians carried out precise calculations to determine the required air exchange rate, based on ASHRAE standards and the specific nature of the artisanal activities.
Step 2: Installation of a Balanced System
We replaced the old setup with a balanced mechanical ventilation system (HRV/ERV) that included:
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A VENMAR X24 ERV air exchanger, designed for small to medium commercial environments.
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Rigid galvanized ducts, insulated and installed with proper slope to prevent condensate buildup.
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Strategically placed exhaust and supply vents, covering all active zones of the workspace.
Step 3: Commissioning and Balancing
The entire system was put into operation after a careful airflow balancing process, ensuring a perfect match between extracted and supplied air. We also installed a smart hygrometer allowing the owner to monitor humidity in real time.
Result: A Quick and Lasting Recovery
Thanks to our intervention, the workshop was able to reopen just 48 hours after its temporary closure. Staff immediately noticed a major improvement: lighter air, no more odors, and a healthier work atmosphere. The owner confirmed a clear boost in productivity and a return of customers who were sensitive to the air quality and product scents.
Key Takeaways: Common Ventilation Mistakes to Avoid in Commercial Settings
This real-world example highlights frequent ventilation mistakes to avoid:
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Installing a ventilation system without performing airflow calculations.
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Poor distribution of air vents throughout the workspace.
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Assuming a basic exhaust fan is enough to ensure air quality.
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Hiring general contractors who aren’t specialized in commercial HVAC systems.
At AirGreen, we serve all areas of Laval, Montréal, Longueuil, the North Shore, and the South Shore, offering professional installations, technical diagnostics, and energy-efficient renovation projects related to ventilation.
Why Trust AirGreen?
With over 15 years of experience in ventilation system installations and recognized expertise in the HVAC industry for artisan and commercial use, we guarantee:
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Installations that meet the highest industry standards.
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A specialized team available for emergency ventilation calls.
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Personalized, long-lasting solutions that may be eligible for energy efficiency grants, depending on the case.
Practical Advice for Workshop and Business Owners in Laval
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Have your ventilation system evaluated every 3 to 5 years, especially if you're working with chemicals or generating fine particles.
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Watch for signs of system failure: excessive fog on windows, persistent odors, or employee fatigue.
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Choose a dual-flow ventilation system with heat recovery, especially if your space is fully or partially insulated.
In Conclusion
A poorly designed ventilation system can jeopardize not just your comfort, but the survival of your business operations. Our swift intervention in Laval clearly illustrates the importance of a professional diagnosis and a properly sized ventilation system. If you operate a business or workshop on the North Shore, in Montréal, or on the South Shore, think of AirGreen for a reliable, high-performance, and customized solution.