Concrete, expert solutions to ensure the quality of your indoor air
In a dense urban environment like Montreal, ensuring optimal air quality in residential, commercial, or institutional buildings is not a luxury—it’s a necessity. At AirGreen, we’ve made ventilation maintenance a true specialty, addressing critical concerns tied to health, comfort, and energy efficiency in buildings throughout Montreal, Laval, Longueuil, as well as on the North Shore and South Shore.
Why regular maintenance of your ventilation system is essential
A poorly maintained ventilation system doesn’t just pose health risks (allergens, mold, bacteria)—it also significantly reduces energy performance and increases electricity consumption. A single clogged filter or blocked duct can throw an entire HVAC ecosystem out of balance.
At AirGreen, we recommend at least one maintenance visit per year, especially before the peak heating or cooling seasons. Thanks to our on-the-ground experience in buildings across Montreal and surrounding areas, we know how to detect the earliest warning signs of system malfunction.
Our expert approach to ventilation maintenance
We don’t offer just a basic cleaning—our maintenance service is a comprehensive, meticulous process, adapted to the unique characteristics of each system. Whether it’s an air handling unit (AHU) in a commercial building or a residential air exchanger, our team follows a strict, proven methodology:
Complete system inspection
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Duct inspection: checking for debris buildup, moisture, mold, insect or rodent nests
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Grille and vent check: identifying blockages, mechanical damage, or poor airflow direction
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Static pressure assessment: ensuring a balanced airflow throughout the system
Professional cleaning
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High-powered HEPA vacuuming: no cross-contamination
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Rotary mechanical brushing inside ducts to fully remove dust and buildup
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Cleaning and disinfecting all ventilation units, including filters, motors, and heat exchangers
System optimization and recommendations
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Replacing high-efficiency air filters (MERV 13 or higher) when needed
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Adjusting airflow rates to improve circulation without increasing noise
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Providing a detailed report with photos and personalized advice
Case Study: ventilation maintenance in a triplex in Ahuntsic
One of our standout projects: a triplex located in Ahuntsic, equipped with a central ventilation system using a Venmar EVO5 700 HRV air exchanger. The residents were complaining about persistent odors and a heavy-feeling air. During our inspection, we found:
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A completely clogged filter
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Partially collapsed ducts in the crawl space
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Heavy dust accumulation inside the heat recovery unit
Our technicians carried out a full cleaning of the entire network, replaced the damaged ducts, and rebalanced the exhaust airflow in the kitchen. The result: a significant improvement in air quality, renewed comfort, and extremely positive feedback from the owner.
Specific challenges in dense urban areas like Montreal
Buildings located in boroughs like Rosemont–La Petite-Patrie, Villeray–Saint-Michel–Parc-Extension, or Le Plateau-Mont-Royal often face:
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Outdated or poorly sized systems
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Hard-to-reach ducts, sometimes built into brick walls or drywall ceilings
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Renovations that didn’t properly integrate with the existing HVAC network
Our teams are trained to intervene with discretion, speed, and efficiency, even in the most constrained environments. We use camera inspection tools, triple-filtration vacuums, and certified cleaning products that are safe for occupants and pets.
Recommended maintenance frequency based on building use
| Type of building | Minimum maintenance frequency |
|---|---|
| Residential (house, condo) | Every 12 to 18 months |
| Multi-unit buildings | Every 6 to 12 months |
| Commercial buildings | Every 6 months |
| Institutional (schools, daycares) | Every 3 to 6 months |
Grants and incentives: strategic maintenance investments
While government grants are more commonly associated with purchasing heat pumps or energy-efficient equipment, it’s worth noting that certain municipalities offer support programs for HVAC maintenance, especially in community-use buildings. Our experts can help you take advantage of these opportunities.
Why choose AirGreen for your ventilation needs?
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Proven field expertise in hundreds of buildings across Montreal, Laval, Longueuil, the North Shore and South Shore
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Certified HVAC technicians, trained to ASHRAE and RBQ standards
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Professional, punctual, personalized service
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State-of-the-art equipment for inspection and cleaning
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Full transparency: you receive a comprehensive report after every visit
Practical tips to maintain your system between maintenance visits
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Check your filters every 2 to 3 months and replace them when dirty
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Keep vents and grilles unobstructed (avoid blocking them with furniture, curtains, etc.)
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Install a humidity sensor in high-risk areas (basement, bathroom)
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Schedule an annual preventive inspection with AirGreen
Conclusion: maintaining your ventilation system isn’t optional—it’s an investment in your health, comfort, and energy savings. At AirGreen, we bring all our expertise to the table to ensure your indoor air stays clean, smooth-flowing, and healthy all year long.
Contact us today to schedule your custom maintenance visit in Montreal, Laval, Longueuil, the North Shore or the South Shore.