Air duct cleaning with professional equipment

Ventilation duct cleaning for your clients: for cleaning contractors and installers

Most machines on this site are bought by companies that deliver ventilation cleaning as a service. A cleaning contractor or installer visits a care facility, an office or a commercial kitchen, inspects the ducts, cleans them and hands over a report. With many clients this happens in a fixed annual round: the ducts are checked every year and cleaned of dust straight away.

Note the difference between practice and obligation. There is no statutory cleaning frequency for ducts; KHN (Royal Dutch Hospitality Association) writes that it is not laid down in law for hospitality extraction, but that fire insurers do require regular maintenance. Insurers and advisers give guide values. The prevention conditions of the insurer Goudse ask hospitality businesses to have the exhaust duct and the motor inspected every year and, where necessary, cleaned by a specialist. Rabobank advises cleaning hospitality extract ducts professionally at least once a year.

How to set up such a service, which machine suits which type of client and how to report on the annual round is worked out in detail under air duct cleaning as a service.

Why a clean ventilation system pays off for your clients

A good story for your client starts with the why. Nobody sees a ventilation duct, and that is exactly why it is often forgotten. Yet every supply installation blows air through precisely those ducts into the workspace. The Dutch National Institute for Public Health and the Environment (RIVM) calls maintenance of the system and regular cleaning of filters and grilles important, and Milieu Centraal (Dutch public information centre) warns that moulds and bacteria can be blown along with the air when filters are dirty.

For your clients as employers there is a firm legal basis. Article 6.2 of the Working Conditions Decree (Arbobesluit) requires sufficient unpolluted air at the workplace (paragraph 1), an installation that is always ready for operation (paragraph 2) and a monitoring system that signals faults where this is needed for health (paragraph 4). A duct full of dust or grease fits poorly with that.

There is also a productivity argument: according to the World Green Building Council, better indoor air quality can increase productivity by 8 to 11 percent. And contamination slows the airflow. In a laboratory study of an MVHR unit (Energies, 2025), heavily contaminated filters gave 37 percent less supply air. That is mainly underventilation: you pay for an installation that does less than it can.

A practical tip for the conversation with your client: show photos from the duct before and after cleaning, refer to the article of the Working Conditions Decree and link the work to the annual inspection that is often already in the maintenance plan. That makes the value of the job visible to people who never look inside a duct.

Which duct cleaning equipment suits which duct?

The choice starts with three questions: what is the diameter, how long is the section you want to do in one go, and is there dry dust or sticky grease inside? The page on duct cleaning equipment has an extensive selection guide. Here is the overview to start with.

For long runs the DC4 duct cleaning machine is the logical first candidate: you feed the shaft into the duct and the machine does the rest. For short sections with your own drill, the PD4 duct cleaner is handy. For the PD2 duct cleaner, Lamers provides the specifications itself. And if you want to see what you are doing in narrow ducts, the Intelligent Airnozzle with built-in camera and LED lighting is interesting.

Commercial duct cleaning for clients in care, food, hospitality and industry

Every client of a cleaning contractor has a different kind of dirt and a different risk, and therefore needs a different set of equipment. That is why the site has detailed pages on air duct cleaning by sector. In short:

• Care: the Dutch guideline on air handling in operating theatres asks for an air management plan with technical management, maintenance and periodic checks. More on this under hospital ductwork cleaning.
• Food industry: the verification list of the Netherlands Food and Consumer Product Safety Authority (NVWA) asks to avoid airflows from contaminated to clean rooms and to keep filters accessible. See air hygiene in the food sector.
• Hospitality: according to KHN, grease in extract ducts is unhygienic and a serious fire risk. Find out everything about kitchen extract duct cleaning.
• Industry: fine dust and extraction close to the source call for robust machines. Have a look at industrial ductwork cleaning.

If you work in office buildings a lot, cleaning office ductwork explains what facility managers expect. Schools, hotels and bakeries each have their own page within the same hub, so you have the right arguments and equipment at hand for every client.

How often should ventilation ducts be cleaned and which standards apply?

There is no single statutory interval that applies to all buildings. Standards, insurers and knowledge institutes do give guide values. The full explanation is on the page about duct cleaning frequency.

The most important European standard is EN 15780:2025, which replaces the 2011 version. It sets cleanliness classes, inspection intervals per class and acceptable cleanliness levels, and now also covers kitchen extraction. How EN 15780 relates to the German hygiene guideline is explained in EN 15780 and VDI 6022.

Ductwork cleaning in five steps

Professional work almost always follows the same pattern. The detailed guide to air duct cleaning step by step goes deeper into each step.

1. Inspect: a camera inspection and, where needed, swab samples show how dirty the duct is. KHN points out that serious contamination is often not visible to the naked eye.
2. Seal: close valves and diffusers with foam caps, and seal duct sections with balloons.
3. Create negative pressure: keep every section to be cleaned under continuous negative pressure, so that loosened dirt does not enter the room. If the extraction unit exhausts indoors, a HEPA filter of 99.97 percent at 0.3 µm is required. You arrange this with negative pressure with HEPA extraction.
4. Clean: rotating brush, compressed air or a combination, depending on duct and dirt.
5. Check and record: demonstrate the result with a surface comparison, a measurement or a photo report.

A simple checklist for the van: camera, foam caps in the common sizes, duct balloons, an extraction unit with the right filter, brushes for the materials you meet and a fixed report template. With that set, every job follows the same five steps.

Three misconceptions about air duct cleaning

"If the filters are clean, the ducts are too." Not necessarily. The US EPA describes how a lot of dust stays stuck to the duct wall. Replacing filters is maintenance; cleaning ducts is something else.

"Compressed air is always the fastest solution." In a bakery, Alimento and TNO actually advise against compressed air for cleaning, because of flour dust. And Lamers states honestly that an air nozzle was long found to be less effective than rotating brushes; only with a camera do you see and clean every spot and corner.

"You can always do it yourself." You can often clean grilles and valves yourself, but for the ducts themselves you need proper tools, sealing and extraction. The trade off is worked out under in house or outsourced duct cleaning.

Knowledge base: costs, rules and tips on air ducts

The air duct cleaning knowledge base brings all guides together: from mechanical ventilation and MVHR ducts to the standards and a step by step plan. Many visitors start with the question what duct cleaning costs. There you will find price indications from public sources, with the note that commercial cleaning is almost always tailor made after inspection.

Looking for information for a specific place in the Netherlands? Then the overview of ductwork cleaning per municipality helps, with figures from Statistics Netherlands (CBS) on the number of business establishments and the sectors that are most common there.

Why cleaning contractors request their duct cleaning equipment from Lamers

Lamers Reinigingstechniek is a family business that has supplied professional cleaning equipment for industrial cleaning and maintenance for more than 50 years, with standard solutions and customised machines. Besides duct cleaning machines, Lamers offers extraction and filtration equipment, accessories, sealing caps and built in air purifiers. As a cleaning contractor you can put your whole set together with one supplier. More background under the family business Lamers.

In doubt between two machines, or want to know which brushes fit your clients' ducts? Pass on the diameters, lengths, type of contamination and the client types you work for, and you can then request a quotation quickly. You can also request a callback, send a WhatsApp message or ask a question first.