Air duct cleaning in Maastricht

Maastricht in figures: hospitality and leisure above average

Maastricht has 125,285 inhabitants, making it the 23rd municipality in the Netherlands (CBS 2024). The municipality is very highly urbanised, with 2,246 inhabitants per km². This is how the establishments are distributed:

The average is calculated over all establishments in the 51 municipalities together. The lesson: in Maastricht, process extraction comes up less often, while kitchen extraction comes up more often. That calls for different brushes, different measurements and a different interval.

Duct cleaning Maastricht in hospitality: what do insurers require?

No law says how often a hospitality extract duct must be cleaned. KHN (Royal Dutch Hospitality Association) confirms this. The owner must, however, maintain the extraction installation and the duct in such a way that no fire hazard arises, and fire insurers require regular maintenance.

In practice these requirements come back again and again:

• Rabobank advises professional cleaning at least once a year, and twice a year for a fryer restaurant.
• The prevention conditions of Goudse ask for grease filters to be cleaned or replaced weekly, and for the extract duct and motor to be inspected annually and cleaned by a specialist if necessary.
• KHN mentions a report, photos and a certificate as a way to show that the duct is clean.

So first ask your own insurer which evidence it wants to see. All points of attention for kitchens are covered under cooker hood duct cleaning for cleaning contractors.

How thick can the grease layer in a kitchen duct become?

Grease is trickier than dust, because you cannot see it building up. KHN points out that serious contamination is often not visible to the naked eye. Measuring is therefore the only reliable basis.

The certification scheme of NVRL and TNO uses an intervention value of 500 µm of grease. After cleaning, no more than 200 µm may remain. Measurements are taken with a wet film thickness gauge: one sample behind each extraction hood and one per 10 metres of duct. According to a secondary source, EN 15780:2025 also contains guidance for commercial kitchen extraction for the first time, with comparable values.

Fictional example: a restaurant with two hoods and 25 metres of duct. That means two samples at the hoods and three along the duct, at the spots you will use again for the next measurement.

Matching the interval to the hours the kitchen runs

A lunch café and a kitchen that runs from early morning until closing time do not need the same schedule. A British supplier of kitchen extraction links the interval to the number of operating hours per day:

That is a foreign guideline, not a Dutch rule. Use it as a starting point and adjust based on your own grease measurements. How intervals work for other building types is explained under ductwork cleaning schedule for cleaning contractors.

Hotels and function rooms: bathroom extraction and small ducts

Alongside kitchens, Maastricht has many buildings for accommodation and leisure. There, the work is often in small extract ducts from bathrooms and toilets, with bends right behind the valve. A brush on a shaft does not always get through.

The Intelligent Airnozzle uses compressed air to clean ducts from 30 mm, takes tight 90 degree bends and has a camera with LED lighting, so you can see what is happening. You need a compressor of 700 litres per minute or more at about 10 bar. The product page on Intelligent Airnozzle for cleaning contractors has the details, and about rooms and washrooms under air duct cleaning in hotels.

Wet or dry: which method works for grease and which for dust?

A Eurovent recommendation draws a clear distinction: dry methods are usually sufficient for supply and general extract, but extract from commercial kitchens requires wet methods. That explains why a kitchen duct and a hotel corridor call for a different approach.

• General ventilation: rotating brush, soft or normal brushes, extraction with negative pressure.
• Kitchen extract: more aggressive Tynex brushes and a spray system, such as the Danduct DC4 Sprayer System.
• Ductwork: Goudse requires fixed, non flexible and non ribbed ductwork of aluminium or steel in hospitality kitchens. That also makes cleaning easier.

DC4 duct cleaner for businesses works in ducts of 100 to 600 mm up to 30 metres deep. A comparison with the other machines is available under tools for cleaning air ducts in practice.

Ventilation duct cleaning Maastricht and the rest of South Limburg

If you work in Maastricht, you often have clients elsewhere in South Limburg too. The picture there resembles that of Maastricht. For air duct cleaning in Heerlen, 21.4% of establishments fall under trade and hospitality; for duct cleaning equipment in Sittard-Geleen it is 19.8% (CBS 2024). A kit set up for kitchen extraction and small washroom ducts can be used across the whole region.

The overview of all municipalities, each with its own angle, is under ductwork cleaning per municipality for cleaning contractors. Want to know which brushes, shafts and extraction you need? Ask Lamers for advice or a quote, request a callback or send a message via WhatsApp.

A short checklist before you call: note the number of hoods, the total duct length, whether the ducts are fixed steel or aluminium, the opening hours of the kitchen and the most recent grease measurement if you have one. With those details the advice can go straight to the right brush set and spray system.