An invisible buildup that hurts your air quality and HVAC system performance
In many homes and buildings across Montréal, Laval, Longueuil, the North Shore, and the South Shore, air ducts are often ignored for years. Yet these discreet passages play a critical role in the quality of your indoor air, energy efficiency, and the lifespan of your heating, ventilation, and air conditioning (HVAC) systems. At AirGreen, we’ve seen with our own eyes the staggering amounts of dust, pollutants, mold, and even organic debris that can accumulate inside them — sometimes the equivalent of a full vacuum cleaner bag… per room!
Why duct cleaning is essential for your comfort and health
A clogged duct network acts like a brake on your central heat pump, furnace, or air conditioner. It can:
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Reduce airflow, making rooms uncomfortable.
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Increase your energy consumption.
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Allow pollutants into the air (fine dust, pollen, dust mites, spores, etc.).
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Cause unpleasant or persistent odors in certain rooms.
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Lead to premature failure of expensive equipment.
We recently carried out a duct cleaning service in a century-old home in Rosemont–La Petite-Patrie. Despite recent renovations, the ducts hadn’t been cleaned since they were installed in the 1980s. The result? A brand new Fujitsu central heat pump system was losing over 35% of its power due to dust buildup. After our intervention, the family immediately noticed better air quality, fewer allergies, and more stable indoor temperatures.
How a professional cleaning with AirGreen works
Complete inspection and diagnostics
We always start with a thorough inspection of your duct network using specialized cameras. This helps us detect:
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Buildups of dust or debris
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Presence of mold or excessive humidity
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Signs of rodent or insect intrusions
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Poorly sealed or punctured areas that affect system efficiency
Mechanical and high-pressure cleaning
We use professional-grade negative pressure machines, combined with rotating brushes and compressed air jets. These tools let us effectively remove contaminants from the ducts without damaging them.
Disinfection and anti-allergen treatment
For clients with asthma, allergies, or young children, we offer a health-friendly antibacterial treatment, eliminating mold spores, bacteria, and dust mites with no harsh chemical odors.
What we often find inside ducts
Here’s a (non-exhaustive!) list of what we’ve found during our interventions across Greater Montréal:
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Years’ worth of built-up dust
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Huge amounts of pet hair
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Leftover construction materials (gypsum, plaster, nails)
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Rodent nests
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Mold invisible to the naked eye
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Forgotten objects (toys, coins, tools)
These aren’t harmless. They disrupt the balance of your HVAC system and can increase your energy bills by up to 25%.
When should ducts be cleaned?
At AirGreen, we recommend a complete cleaning every 3 to 5 years, or in these situations:
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After renovation work
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When you buy a new property (especially if you don’t know the maintenance history)
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If you notice reduced airflow or unusual smells
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In case of sudden or persistent allergy issues
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If you have pets that shed heavily
Expertise rooted in every neighborhood’s reality
Our technicians work throughout Montréal, Laval, Longueuil, the North Shore (Blainville, Repentigny, Terrebonne, etc.), and the South Shore (Brossard, Saint-Hubert, Sainte-Julie, etc.). Each neighborhood comes with its own challenges: old homes in Plateau Mont-Royal often have outdated metal ducts, while newer constructions in Laval tend to use plastic ducts that require a delicate touch.
What sets AirGreen apart
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Certified technicians with years of HVAC cleaning and maintenance experience
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Top-of-the-line equipment meeting the highest industry standards
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Tailored approach for your specific property and system type
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Before/after photos and visual reports to prove the work done
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Fast availability throughout Greater Montréal
Practical tips to extend the benefits of duct cleaning
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Replace your air filters every 2-3 months (especially during heating or cooling seasons)
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Have your HVAC system inspected annually
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Avoid blocking air vents with furniture or rugs
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Keep your home clean and free of excessive dust buildup
AirGreen, your indoor air quality partner
By cleaning your ducts, you’re investing not only in energy efficiency, but above all in your daily well-being. Cleaner air means greater comfort, longer-lasting equipment, and better health for your family.
Don’t underestimate what you can’t see. The dust in your ducts might be the hidden culprit behind many issues in your home.
At AirGreen, we believe rigorous HVAC maintenance is the key to lasting comfort. Contact us for a free inspection or to schedule a complete duct cleaning for your home or commercial building.