Network survey
We start with a picture of the system: zones, units, diffusers, return grilles, access above suspended ceilings. That survey is what allows a fair quote and a realistic time window.
Services
Commercial ventilation duct cleaning in Montreal
Free and no obligation · we scope the job with you, on the phone then on site if needed · you get a clear quote before any work starts.
In a commercial space the ventilation system almost never stops: it runs through every business hour, for dozens of people, often for years without anyone opening a duct. The dust that builds up ends on workstations, displays and filters, and a dirty duct system strains heating and cooling equipment. For a property manager it is also a matter of complaints: odours, discomfort, allergies among employees or tenants.
In short
Commercial duct cleaning removes the dust and contaminants accumulated in the ventilation system of a non-residential building — offices, retail, clinics, daycares, rental buildings. The principle is the same as in a home: put the duct system under negative pressure with a collector, dislodge deposits with compressed air and brushing, then sanitize. What changes is scale: several zones, return plenums above suspended ceilings, rooftop units, and a job that has to be planned around occupancy hours.
When should you call?
- Dust is blackening the area around the ceiling diffusers.
- Employees or tenants complain of odours or dry, dusty air.
- Fit-out or renovation work was done in the space.
- Unit filters clog much faster than they used to.
- You are taking over a space with no known maintenance history.
- An inspection, an insurer or a client requires proof of maintenance.
What's included
- Network survey and quote by zone
- Protection of workstations and walkways
- Cleaning of every branch, diffuser and return
- Mechanical brushing of the main trunks
- Antibacterial sanitizing of the ductwork
- Itemised invoice for your maintenance records
- Typical duration
- Varies with system size — estimated during the survey.
- Recommended frequency
- NADCA recommends inspecting commercial systems regularly and cleaning them when inspection warrants it. In practice an office space is often reviewed every 2 to 3 years; a high-occupancy store, clinic or daycare more often.
Recognize any of these signs?
Tell us what you’re noticing and we’ll tell you whether cleaning is worth doing now. Free quote, no obligation.
How we work
Negative pressure, zone by zone
The 4,000 CFM collector is connected to the main trunk of each zone. Work proceeds sector by sector: the rest of the space stays usable, and dislodged dust goes into the machine, not onto desks.
Compressed air and brushing
Every branch gets a 200 PSI compressed-air jet, and the main trunks are mechanically brushed, as the NADCA standard requires. Diffusers and grilles are cleaned separately.
Sanitizing and restart
An antibacterial sanitizer is applied through the ductwork, grilles are put back and the system is restarted. You receive an invoice itemised by zone, useful for your maintenance records.
Frequently asked questions
Do we have to close during the cleaning?
Usually not. Work is done zone by zone, under negative pressure: the area being cleaned is cleared and the rest of the space stays usable. The time window is agreed at quoting, based on your occupancy hours.
Do you work in apartment buildings?
Yes. For a rental building or a condominium, units and common areas are grouped into one schedule, and the invoice is itemised per unit to make cost allocation easier.
Can you provide proof of the cleaning?
You receive an itemised invoice describing the work done, zone by zone. That is the document an insurer, a commercial tenant or a maintenance log usually asks for.
Why choose Nettoyage Service Plus
- Our own technicians, NADCA and IICRC certified. Nothing is subcontracted — that’s how we can stand behind the results.
- Your premises are protected. Workstations and walkways are protected; everything is put back before we leave.
- No surprises. Travel is included in the quote. If what we find on site differs from what was described, we talk to you before continuing — never after.
- You pay once the job is done and you’ve seen it. If anything isn’t right, we redo it — just tell us before we leave or call the same day.
- You don’t have to stay home. Someone just needs to let us in and show us the equipment and vents — after that, you’re free to go about your day.
Why don’t we post prices? Because the cost depends on the number of vents, the size of the home, the system’s actual condition and access. All questions →
Free quote
Get a free quote
No obligation. We first scope the job with you — on the phone, then on site if needed — and you get the figure before any work starts.
Service area
We provide commercial duct cleaning across Greater Montreal. Pick your city for what changes locally.
MontrealLavalLongueuilBrossardTerrebonneRepentignyBouchervilleDollard-des-OrmeauxPierrefonds-RoxboroCôte Saint-LucSaint-EustacheVaudreuil-DorionBeloeilBlainvilleBois-des-FilionBoisbriandCandiacChamblyChâteauguayDorvalKirklandL'AssomptionMirabelMount RoyalSaint-Bruno-de-MontarvilleSaint-ConstantSainte-ThérèseVarennesWestmount All cities →
Other services
Air duct cleaning
Air duct cleaning removes the dust, debris and allergens that accumulate inside a building’s forced-air system.
Wall-mounted air conditioner cleaning
Cleaning a wall-mounted air conditioner means opening the indoor unit to wash what the filters do not protect: the evaporator coil, the blower wheel, the condensate pan and the drain.
Deep cleaning
Deep cleaning is a complete top-to-bottom cleaning of everything regular housekeeping does not touch: walls, ceilings, baseboards, light fixtures, inside cabinets and appliances, bathrooms in depth, high dusting.