How Often Should You Clean Air Ducts in Montreal?
Key Points to Remember
- •Heating or cooling ducts: clean every 2 to 3 years.
- •Dryer duct: every 1 to 2 years — a clogged dryer duct is a leading cause of home fires.
- •Air exchanger: a complete cleaning every 5 years.
- •Shorten the interval to 1–2 years if you have pets, smokers or allergies, or after renovations.
- •Residential promo prices: ducts $299, dryer duct $149, air exchanger $229.
In Montreal, a heating system runs roughly 7 months a year. Seven months of pushing the same dust, pet dander and spores through a closed network. That is why how often you clean your ducts is anything but a detail: it shapes the air your family breathes, the lifespan of your system and your energy bill.
The short answer: for most homes in Montreal, Laval and the South Shore, professional <a href="/en/services/ventilation-duct-cleaning" class="text-primary underline">ventilation duct cleaning</a> every 2 to 3 years is enough. But the frequency changes with the type of ducts, whether you have pets or smokers, and the condition of the building. Here is the exact schedule, duct by duct, and current prices.
Heating and Cooling Ducts: Every 2 to 3 Years
This is the baseline for a forced-air residential system. After 2 to 3 years, ducts build up enough dust, allergens and debris to cut airflow and degrade indoor air quality. In Montreal, dry winters and near-continuous heating speed up that buildup.
The frequency in practice :
Every 1 to 2 years if you have pets or smokers, or if anyone in the home has asthma or allergies. Immediately after renovations or an infestation.
💡 Good to know :
Use the same visit to have your air exchanger checked.
Dryer Duct: Every 1 to 2 Years
The dryer duct is the most critical. Lint builds up with every cycle, cutting the appliance's efficiency and feeding a real fire risk. It is the most cost-effective cleaning in a home: inexpensive, it extends the dryer's life while removing a hazard.
⚠️ Safety :
Never exceed 2 years. A clogged dryer duct is a leading cause of home fires in Canada.
Air Exchanger: A Complete Cleaning Every 5 Years
The air exchanger refreshes the air and controls humidity. Cleaned too rarely, it redistributes dust and allergens throughout the home. A complete cleaning every 5 years, paired with regular filter maintenance, is enough for a residential system.
Condos and Commercial: A Shorter Interval
In condos and multi-unit buildings, shared networks need cleaning at least every 3 years. In a commercial building, plan on an annual inspection and a complete cleaning every 2 years, tailored to foot traffic and how the space is used.
For property managers :
We offer group packages for co-ownerships to coordinate several units in a single visit.
How Much Does Duct Cleaning Cost in Montreal?
Here are the residential promo prices at Royal Nettoyage: heating or cooling ducts $299 (reg. $399, up to 10 vents), wall-mounted air conditioner $249 (reg. $299), air exchanger $229 (reg. $279, 5 vents) and dryer duct $149 (reg. $199). The final price depends on the type of ducts and how accessible the system is.
💡 Tip :
Check our promotions page: current discounts and the antibacterial treatment can lower the total cost.
The Signs That Tell You Not to Wait
Even within the normal cycle, some signals call for an immediate cleaning: mold or a musty smell moving from room to room, dust that keeps coming back despite cleaning, weak airflow at some vents, or allergy symptoms that worsen with no identified cause. A single one of these signs is enough to shorten the interval.
⚠️ Watch out :
Mold grows in the hidden sections of ducts: even when nothing is visible at the vents, the network can be contaminated.
DIY or Professional?
A household vacuum and a cloth can clean grilles and vents, not the inside of the network. Professional cleaning puts the system under negative pressure and uses rotating brushes to dislodge debris stuck to the walls, which is then vacuumed out of the home instead of recirculated.
The Royal Nettoyage approach :
NADCA-certified team, visual inspection before and after in your presence, and antimicrobial treatment only when contamination is confirmed.
Related Articles and Services
To go further on duct maintenance and indoor air quality:
- →ventilation duct cleaning
Our NADCA-certified professional service in Montreal.
- →air duct cleaning: when and why
The right times and the telltale signs.
- →dryer duct cleaning
Remove lint and fire risks.
- →air exchanger duct cleaning
Fresher air and better humidity control.
- →discounts and promotions
Current offers on duct cleaning.
Every 2 to 3 years for most Montreal homes — more often with pets, smokers or allergy sufferers. Trust the cleaning to a NADCA-certified team and breathe healthier air this year.
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