Vent and grille cleaning is the visible surfaces at the ceiling: the louvres, the frame, the diffuser and the ceiling immediately around them. Duct cleaning is the concealed network behind those grilles, running through the ceiling void and the building. They are different jobs, different equipment and different trades, and we do the first and not the second. The distinction matters because a contractor who is vague about it is either confused or selling you something they cannot deliver.
The two jobs
Vent and grille cleaning, which is what we do
Everything you can see. The grille louvres front and back, the frame, the diffuser body, and the ceiling surround where deposition marks the surface, see why the ceiling marks around vents.
What is being removed is a bonded film of airborne dust held to the surface by an oily fraction from skin, cooking and general building air. Dry dusting does not shift it, and the far side of each louvre is where most of it lives, out of sight from the floor.
Duct cleaning, which we do not do
The concealed ductwork behind the grille: the supply and return runs, the plenum, the internal surfaces of a distribution network that may run the length of a building through a ceiling void.
That requires access to concealed spaces, specialist mechanical equipment such as rotary brushing and negative-air machines, containment so that anything dislodged is captured rather than blown into the building, and people who understand the system they are working inside. It is an HVAC specialism.
Why we say no to duct work
Not because it is unimportant, but because doing it badly is worse than not doing it.
Disturbing a duct without proper containment pushes whatever was sitting quietly inside it straight into the occupied space through every grille in the building. That is the opposite of the outcome you were buying. Ductwork is also part of a mechanical system with balancing, dampers and fire dampers in it, and a person who does not understand what they are opening can compromise things that matter considerably more than dust.
So the honest position: we are soft furnishing and surface cleaning specialists, and we clean the grilles and diffuser surrounds properly. Where you need the ducts done, you need an HVAC contractor, and we will tell you so rather than have a go, see what an honest contractor tells you they cannot do.
Which one do you actually need?
Mostly the grilles, and less often than the industry would like you to think for the ducts.
Grilles, on a schedule. They are visible, they mark your ceilings, they sit directly in the airflow, and they are cheap to maintain. Every 6 to 12 months in a standard office, every 3 months in food service, see how often grilles need cleaning. This is the routine one.
Ducts, when there is a reason. Visible debris or contamination in the ductwork, a mould concern, a rodent or bird problem, after major construction that dumped material into the system, or a persistent air issue that has been properly investigated. What is not a reason is a cold call telling you your ducts are full of horrors they have not seen. Duct cleaning is a real service with real applications and it is also an industry with a long history of being sold on fear, so get the recommendation from someone who is not selling it.
What each one actually achieves
This is where we would rather be clear than helpful-sounding.
Grille cleaning removes the film of dust and grime from the surfaces air passes over, stops a dirty grille re-entraining dust into the room, and makes the ceiling stop looking marked. It is a surface, appearance and dust-source job. It is not an air quality intervention, we do not test air, and we will not tell you it prevents anything.
Duct cleaning is for the inside of the system and its benefits are debated even among specialists, with a genuine case in specific situations and a much weaker one as routine maintenance. That is an HVAC engineer's call, not ours.
If you have a real air quality question, filters and ventilation are usually a bigger lever than either, and an HVAC specialist is who to ask, see what carpets do and do not do for indoor air.
The question to ask a contractor
Ask exactly what surfaces they will clean and where they stop. A straight answer sounds like ours: louvres, frame, diffuser, ceiling surround, and nothing behind the grille.
Warning signs are worth naming. Someone who quotes "aircon cleaning" without defining the boundary. Someone who says they will clean the ducts using the same equipment they use for the grilles. Photographs of horrifying ductwork that is not yours, which is the oldest trick in the trade. And any pitch built on what is making your staff ill, see recognising a fear-based pitch.
Common questions
What is the difference between vent cleaning and duct cleaning?
Vent and grille cleaning covers the visible surfaces at the ceiling: the louvres front and back, the frame, the diffuser and the ceiling immediately around them. Duct cleaning covers the concealed network behind those grilles, running through the ceiling void. They need different equipment and different expertise: duct work requires access to concealed spaces, rotary brushing, negative-air containment and an understanding of the mechanical system. They are different trades.
Do you clean air conditioning ducts?
No. We clean vents, grilles and diffuser surrounds only. Duct cleaning is an HVAC specialism, and doing it badly is worse than not doing it: disturbing a duct without proper containment pushes everything inside it straight into the occupied space through every grille in the building. Ductwork also contains dampers and fire dampers that matter considerably more than dust. Where you need ducts done, you need an HVAC contractor.
Which does my office actually need?
Usually the grilles, on a schedule, since they are visible, they mark your ceilings, they sit in the airflow and they are cheap to maintain. Ducts need doing when there is a specific reason: visible contamination, a mould concern, a rodent or bird problem, or after major construction. A cold call describing horrors in ducts nobody has inspected is not a reason. Get that recommendation from someone who is not selling it.
Does grille cleaning improve air quality?
We do not claim that and we do not test air. What grille cleaning genuinely does is remove the film of dust and grime from the surfaces air passes over, stop a dirty grille re-entraining dust into the room, and make the ceiling stop looking marked. If you have a real air quality question, filters and ventilation are usually a bigger lever, and that is a question for an HVAC specialist.
For grilles and diffuser surrounds done properly, with a clear boundary, contact our commercial team or see commercial aircon vent cleaning.