A smart strategy for sellers: increasing resale value through HVAC duct cleaning
When it’s time to sell a home in a competitive market like Greater Montreal, every detail matters. General appearance, layout, lighting — everything is closely examined by potential buyers. However, one aspect that’s often overlooked, yet can play a crucial role in the perceived value of a property, is the condition of the HVAC (heating, ventilation, and air conditioning) system — specifically, the cleanliness of the ductwork.
At AirGreen, we’ve helped many homeowners throughout Montreal, Laval, Longueuil, the North Shore, and the South Shore who wanted to optimize their home’s presentation and value before listing it for sale. One of the most effective — yet underestimated — services is undoubtedly a full professional duct cleaning.
Why does duct cleanliness influence the sale?
Healthy indoor air and a better first impression
Potential buyers are increasingly aware of indoor air quality. When they walk through a home, they immediately notice stale odors, dust in the air, or a heavy atmosphere — all signs of a neglected ventilation system. On the other hand, a home where the air feels fresh and allergen-free inspires confidence and comfort, which can have a strong influence on their decision to buy.
A professional duct cleaning helps eliminate:
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Built-up dust
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Allergens (pollen, mold)
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Pet dander
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Residue from past renovations
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Lingering odors
Increased perceived value during inspections
During a pre-purchase inspection, the professionals hired by the buyers often assess the HVAC system’s condition. A clean, well-maintained system sends a strong message about the overall care taken in maintaining the home. Conversely, a dirty system can raise red flags about hidden costs or general neglect, which may lead buyers to negotiate the price down.
Case Study: a Laval home sold for 7% more thanks to an AirGreen intervention
Just a few months ago, a client in Laval came to us for a HVAC tune-up before putting their home on the market. Their ventilation system hadn’t been cleaned in over 10 years. We carried out:
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A complete duct cleaning (supply and return air)
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Maintenance of the wall-mounted air conditioner and electric furnace
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An enzyme-based antibacterial disinfection
The result? From the first viewings, real estate agents commented on the fresh indoor air and the total absence of odors. The home sold in just 8 days at a price 7% above the initial appraisal.
Which systems require duct cleaning?
Duct cleaning is relevant for any setup involving air ducts:
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Forced-air systems (central heat pumps, furnaces)
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Ventilation units (HRV/ERV)
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Central air conditioners or combined units
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Systems with air-based radiant heating (less common)
How does an AirGreen cleaning service work?
A professional approach with no shortcuts
At AirGreen, we use a certified and safe method aligned with Greater Montreal standards:
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Initial video inspection to assess duct condition
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Negative pressure setup using a high-powered industrial vacuum
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Rotary mechanical brushing of the inside of the ducts (round and rectangular)
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Optional antibacterial atomized disinfection
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Final report with before/after photos to show the quality of the work
Low investment, high return
The cost of duct cleaning varies based on the network size, number of floors, and system configuration. On average, cleaning a mid-sized home costs between $400 and $800. That amount is minimal compared to the potential gains at the time of sale: higher price, quicker sale, and peace of mind for the buyer.
When should you schedule the cleaning before selling?
We recommend scheduling the cleaning at least 2 to 4 weeks before putting the property on the market. This gives enough time for indoor air to stabilize, for disinfection to take effect, and allows you to promote the cleaning as a selling feature in the listing description.
AirGreen Tip: include the cleaning report in your sales documents
Providing buyers with an AirGreen cleaning report with supporting photos demonstrates your transparency and diligence. It could be the difference between a standard offer and a premium one.
Why choose AirGreen for this service?
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Certified HVAC specialists in residential and commercial duct cleaning
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Full coverage of Montreal, Laval, Longueuil, North Shore, and South Shore
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Top-grade equipment, respectful and trained personnel
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Quick, transparent quotes with no hidden fees
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Hundreds of satisfied homeowners in neighborhoods like Outremont, Rosemère, Brossard, and Repentigny
In short: a small action with a big impact
Cleaning your ducts before selling is an investment in the air your buyers will breathe. It’s also a clear message: “This home has been cared for.”
At AirGreen, we believe that the value of a home isn’t just in the walls — it’s in the quality of life it offers. Contact us today for a free evaluation of your HVAC system and turn a simple home listing into a real estate success.
