Neglected air duct maintenance can seriously compromise the efficiency of your central heating system and impact the air quality in your home or commercial building. At AirGreen, we carry out weekly deep cleaning of ventilation ducts throughout Montréal, Laval, Longueuil, as well as the North Shore and South Shore. Thanks to our expertise in HVAC, we help our clients regain optimal comfort while maximizing the energy efficiency of their central heating system.
Here are the 5 major signs that indicate it’s time to clean your air ducts, along with professional advice and real-world examples from our fieldwork.
The indoor air feels dusty, even after cleaning
One of the first red flags we often observe is the rapid buildup of dust on furniture, surfaces, or around air vents. This might seem minor, but it’s often the primary symptom of clogged ducts.
During a service call in Boucherville, our team was contacted by a family who noticed that despite rigorous weekly cleaning, a fine layer of dust would reappear within 24 hours. A full inspection revealed a buildup of debris, pet hair, and particles throughout the duct network. The cleaning significantly improved the air quality and reduced the frequency of household cleaning.
Your allergies or respiratory issues worsen indoors
A poorly maintained HVAC system can recirculate allergens, mold spores, fine dust, and dust mites throughout the entire home. If you or your family members experience recurring allergy symptoms, particularly indoors, it’s critical to have your ducts inspected.
We recently carried out a service in Terrebonne, where a couple with asthma noticed their symptoms worsening. Upon inspection, the ducts were found to contain a high concentration of invisible mold. Our negative pressure cleaning with rotating brushes restored cleaner air and helped ease their daily symptoms.
Persistent odors circulate throughout the house
A lingering unpleasant smell, especially when the heat kicks in, can indicate the presence of mold, bacteria, or remains of dead animals inside your ducts. These odors spread through the ventilation system and can contaminate your entire indoor space.
At a client’s home in Saint-Jérôme, we discovered a rodent infestation that had left droppings in a section of the basement ducts. Thanks to our certified antibacterial disinfection service, we eliminated the source of the odor and ensured a safer indoor environment.
Unusual noises in the ducts or inconsistent room temperatures
A central heating system should operate smoothly and quietly. If you hear clanking, scratching, or vibrations, it could be due to trapped debris or blocked sections of your ductwork.
We conducted an inspection in Laval where a client reported intermittent noises in the ducts, along with colder areas in certain rooms. Our technicians discovered a significant buildup of compacted dust in the main ducts, obstructing airflow. The cleaning immediately restored a balanced distribution of heat throughout the home.
Your heating bills are rising for no apparent reason
Clogged ducts increase airflow resistance, forcing your heating system to work harder to maintain the desired temperature. This often results in a gradual rise in energy costs.
A residential client in Longueuil noticed a 25% increase in their Hydro-Québec bill during the winter, with no notable change in usage. After an AirGreen inspection, we cleaned the entire duct system and fine-tuned the fan calibration. The result: an average 18% energy savings noted on the following month’s bill.
Why choose AirGreen for duct cleaning in Montréal and surrounding areas?
At AirGreen, we offer much more than just a cleaning service. Our approach includes:
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A high-definition camera inspection for an accurate assessment of your ductwork’s condition
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The use of powerful negative pressure cleaning systems
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Certified antibacterial disinfection to eliminate germs and mold
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Fast and discreet service across the Greater Montréal area, including the North Shore and South Shore
Our professional advice for maintaining your ducts
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Have your ducts inspected every 3 to 5 years, or after major renovations
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If you have pets, reduce the interval to every 2 to 3 years
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Invest in a high-efficiency (HEPA) filter to trap fine particles
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Always hire certified professionals for duct cleaning — DIY methods are ineffective and often risky
Final word: Never underestimate the importance of clean ducts
Neglected air ducts can compromise not only the efficiency of your central heating, but also the health and comfort of your occupants. A simple routine cleaning can prevent many problems, reduce energy bills, and extend the lifespan of your HVAC system.
Customized service for both residential and commercial clients
AirGreen also offers custom HVAC maintenance contracts for multi-unit buildings, businesses, schools, and offices. Our team is trained to handle both residential and commercial systems, with discretion and efficiency.
We serve every city in the Greater Montréal area, including Montréal, Laval, Longueuil, Brossard, Repentigny, Terrebonne, Saint-Eustache, and more.
Contact us for a free inspection
Unsure about the condition of your ducts? Contact AirGreen today for a free inspection of your system. Together, let’s ensure cleaner air, more efficient heating, and a more comfortable home for you and your loved ones.