A Frequently Neglected Maintenance Task That Impacts the Overall Performance of Your HVAC System
When talking about residential or commercial heating in Montréal, Laval, Longueuil, North Shore and South Shore, people tend to focus first on system performance, furnace selection, or energy efficiency. But one essential element is often overlooked: the annual cleaning of heating ducts. At AirGreen, we understand how this task—although seemingly minor—has a direct impact on air quality, thermal comfort, energy consumption, and even the lifespan of your HVAC equipment.
Why is duct cleaning so important?
A clean duct system allows air to circulate freely, without obstruction or contamination. Over time, however, dust, allergens, pet hair, mold, construction debris and other pollutants accumulate inside the ducts, creating an ideal environment for microorganisms to thrive and affecting indoor air quality.
Impact on air quality and health
In a city like Montréal, where winters are long and harsh, we spend on average more than 90% of our time indoors. A dirty heating system continuously redistributes harmful particles throughout every room. This can worsen respiratory problems, allergies, or asthma symptoms, particularly in children, the elderly, or immunocompromised individuals.
Consequences on heating system performance
A clogged duct network forces the furnace or central heat pump to work harder to maintain the desired temperature. The result: higher energy consumption, premature wear of components (blower motor, heat exchanger, fan), and more frequent breakdowns.
What we do during a heating duct cleaning service
At AirGreen, our certified teams carry out a complete, safe, and code-compliant cleaning. Our process includes:
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Video inspection of the ducts: to locate the most contaminated areas
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Mechanical cleaning with rotating brushes: paired with a high-power vacuum system
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Extraction of fine particles and contaminants: using industrial HEPA vacuums
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Cleaning of vents and registers
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Optional disinfection: to eliminate mold or bacteria inside the ductwork
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Detailed report with personalized recommendations
We provide services for single-family homes, multiplexes, and commercial buildings throughout the Greater Montréal area.
Case Study: Duct Cleaning in a Duplex in Longueuil
Recently, a client who owns a duplex in Longueuil contacted us due to a persistent odor and an excessive feeling of dust in the air. Upon inspection, we found a buildup of black dust, pollen, and light mold in the ducts of an older forced-air heating system.
The service took four hours. After the cleaning, the client reported a significant reduction in seasonal allergies, better ambient temperature, and a drop in electricity consumption the following month. The ductwork was in good shape but had been neglected for over 10 years.
How often should you have your ducts cleaned?
We generally recommend cleaning every 3 to 5 years. However, in some situations, an annual cleaning is strongly advised:
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Presence of pets (especially dogs and cats)
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Recent renovations that created dust or debris
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Allergies or respiratory issues among occupants
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Older buildings or buildings with humidity problems
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If the system has been unused for an extended period
The real benefits of annual maintenance
A simple annual cleaning of heating ducts can:
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Improve your system’s energy efficiency by 15 to 20%
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Extend the lifespan of your furnace or heat pump
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Lower future maintenance costs
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Ensure healthier indoor air throughout your home
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Prevent winter breakdowns
Why choose AirGreen for your heating duct cleaning?
We don’t just clean—we diagnose, explain, and optimize. Our expertise is based on:
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Over 15 years of HVAC experience in Greater Montréal
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Certified technicians with ongoing training
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A thorough and documented approach
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Services tailored for both homeowners and property managers
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Coverage across Montréal, Laval, Longueuil, North Shore and South Shore
An essential operation, often wrongly overlooked
Annual heating duct cleaning isn’t a luxury—it’s an investment in health, comfort, and efficiency for your home or building. Too often dismissed, it can significantly extend the life of your system while reducing your energy bills.
Conclusion: Think about your ducts—before it’s too late
At AirGreen, we believe preventive maintenance is the key to a high-performing and long-lasting HVAC system. If you’ve never had your ducts cleaned, or if it’s been several years, now is the time to act. Give your occupants a healthier environment—and your equipment a new lease on life.
Contact us today for a free estimate or to schedule your maintenance service in Montréal, Laval, Longueuil, North Shore or South Shore.