A targeted duct cleaning intervention that transformed the day-to-day environment
On the South Shore of Montréal, in an office building located near downtown Longueuil, a persistent issue had been affecting the occupants' quality of life for several months: recurring unpleasant odors circulated through the air, causing constant discomfort for employees and a rise in complaints to the property management. At AirGreen, we were called in to assess the situation, carry out a professional cleaning of the ventilation system, and propose long-term solutions.
An alarming diagnosis: buildup of contaminants and poor air circulation
From our very first on-site inspection, our specialized technicians detected several tell-tale signs of a clogged duct system:
-
Greasy dust buildup in the main ducts.
-
Signs of moisture leading to mold growth.
-
Organic debris in some hard-to-reach areas of the system.
-
Poor air circulation made worse by dirt-clogged vents.
The central ventilation system, installed over 12 years ago, had never undergone a complete cleaning—only sporadic filter replacements. The result: stale air continuously circulating and spreading lingering odors across every floor.
Our thorough approach to deep HVAC cleaning
At AirGreen, we know that proper HVAC maintenance relies on a structured method tailored to the building’s configuration. Here’s the process our team followed on this Longueuil project:
Complete evaluation of the ductwork
We mapped out the duct network using flexible inspection cameras and portable sensors to identify critical areas. Every bend, junction, and branch was documented to ensure full cleaning coverage.
Site protection and safety setup
Before any intervention, we protected work surfaces, installed dust-blocking curtains in high-traffic zones, and set up controlled depressurization systems to prevent particle spread during suction.
High-powered mechanical cleaning
We used a combination of specialized equipment:
-
Electric rotary brushes to dislodge solid buildup.
-
High-powered HEPA-certified vacuum systems to capture fine particles and spores.
-
Compressed air nozzles to clean long and winding ducts.
Eco-friendly disinfecting
To eliminate bacteria and neutralize bad odors, we applied a non-toxic disinfectant treatment, approved for use in sensitive work environments. This treatment is allergen-free and leaves no lingering chemical residue.
Tangible results: an 80% drop in odor complaints
Just days after our intervention, the building management confirmed an immediate drop in tenant complaints, with a noticeable improvement in perceived air quality:
-
Over 80% reduction in reported odors.
-
Fresher, lighter air in common areas.
-
Higher employee satisfaction ratings in internal surveys.
Why duct cleaning is essential in commercial buildings
Commercial HVAC systems often operate non-stop, with little downtime between heating and cooling seasons. Here are several reasons why regular duct cleaning is crucial:
-
Improved indoor air quality, especially for sensitive or allergic individuals.
-
Elimination of persistent or unwanted odors.
-
Prevention of contamination from mold, bacteria, or allergens.
-
Enhanced energy efficiency of the ventilation system.
Our AirGreen expertise serving the South Shore
This successful intervention is just one of many we've completed in the Brossard, Saint-Lambert, Longueuil, and Saint-Hubert areas. Each project is approached uniquely, backed by our in-depth HVAC cleaning expertise, combined with our local real estate knowledge.
We work in a wide variety of properties, including:
-
Office buildings like the one featured here.
-
Schools and daycare centers requiring impeccable hygiene.
-
Multi-unit residential buildings.
-
Retail spaces, medical centers, and industrial warehouses.
Practical tips: how often should your ducts be cleaned?
We recommend an annual visual inspection for all commercial buildings, and a full cleaning every 3 to 5 years, unless early warning signs appear, such as:
-
Persistent odors.
-
Rise in allergies or respiratory discomfort.
-
Unusual noises in the ventilation system.
-
Decreased airflow.
Preventive maintenance is always more cost-effective and less disruptive than emergency repairs.
AirGreen: your trusted HVAC maintenance partner on the South Shore
As a company specializing in cleaning, installing, and maintaining HVAC systems, we offer:
-
Certified and experienced technicians.
-
Cutting-edge professional equipment.
-
Tailored approach, adapted to each building’s layout.
-
Courteous, fast, and transparent service, with detailed reporting.
Have your tenants or employees complained about air quality? Suspect your ducts may be clogged? Reach out to AirGreen, your trusted local partner.
Conclusion: healthier air, better work environment
Thanks to a professional duct cleaning intervention, this office building on the South Shore restored a pleasant, healthy, and productive work environment. This kind of operation isn’t a luxury—it’s a practical tool to improve comfort, health, and energy performance.
At AirGreen, we believe that a healthy building starts with clean air. And for that, you need trained specialists, professional-grade equipment, and uncompromising execution.
Contact us today for a free evaluation of your HVAC maintenance needs in Montréal, Laval, Longueuil, the North Shore, or the South Shore.