NADCA Certified Air Duct Cleaning in Montreal
Key Takeaways
- •NADCA certification requires a certified Air Systems Cleaning Specialist (ASCS) on staff, liability insurance and a signed code of ethics — not a paid membership.
- •The ASCS exam covers indoor air quality, mechanical safety and field practice, and the designation has to be renewed.
- •Certified work follows ACR, the NADCA Standard: assess the system, contain the dust, remove debris at the source and document the job.
- •NADCA warns homeowners about low-ball quotes that grow with "extras" once the crew is already on site.
- •Book a duct cleaning visit with a certified technician.
Quebec does not license air duct cleaners. NADCA certification is the closest thing this industry has to a professional standard — and Royal Nettoyage holds it. To keep it, we must keep a certified Air Systems Cleaning Specialist on staff, carry liability insurance, clean to NADCA standards and sign the association's code of ethics.
Here is what that certification actually requires, and what it means for the air moving through your home or building.
NADCA Certified Company
Royal Nettoyage is a NADCA-certified company. Verify it yourself in the association's member directory.
Verify our certificationWhat NADCA is
The National Air Duct Cleaners Association — The HVAC Inspection, Cleaning and Restoration Association — was founded in 1989 as a non-profit. It sets the North American benchmark for inspecting, cleaning and restoring HVAC systems, trains its members and certifies the technicians who do the work. Its founding principle still drives the standard today: source removal, not surface cleaning.
What certification actually requires
A NADCA company certification is not a badge you buy. The company must employ at least one certified Air Systems Cleaning Specialist, carry liability insurance, perform every job to NADCA standards and commit to the association's code of ethics. To earn the ASCS designation, a technician passes a written exam covering indoor air quality, mechanical safety and field practice, then proves on a live job that they can apply it. Certification is renewed, not owned.
⚠️ The requirement most companies skip :
having a certified specialist on staff. Check for it before you book.
The standard our work is held to
NADCA certification ties us to ACR, the NADCA Standard — the benchmark that defines how HVAC systems should be assessed, cleaned and restored. In practice, that means we assess the system before quoting, contain dust instead of scattering it, remove debris at the source and document the job.
💡 What this looks like on site :
a crew that skips assessment and containment is not cutting corners on a standard. It is guessing.
What this means for you
Hiring a NADCA-certified company means hiring a crew accountable to a written standard rather than to a price. NADCA also publishes fair-pricing guidance and warns homeowners about unusually cheap offers — jobs that start low, then grow with extras that should have been included from the start. Clean, properly maintained ducts also move air with less resistance, so your HVAC equipment works less to heat and cool your space.
Related Resources
Go deeper on duct cleaning and indoor air quality:
- →duct cleaning services
Residential and commercial duct cleaning.
- →ventilation duct cleaning
Ventilation systems and heat recovery units.
- →air duct cleaning: when and why
How often to clean your ducts, and the warning signs.
- →hidden hazards in your ducts
What builds up in a neglected system.
- →health and safety for duct cleaning
The standards our crews work to.
Want a NADCA-certified technician to inspect or clean your ducts in Montreal, Laval or the South Shore?
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