Air duct cleaning in Den Haag

Compact city, cramped plant rooms: what that means for duct work

In a densely built city you rarely work from a spacious rooftop set up. You come in via a stairwell, a lift or a narrow shaft. That has three consequences:

• Weight and size count. A machine that two people have to carry up a flight of stairs costs time on every project.
• Working space is limited. An extraction unit, hoses and a brushing machine all have to fit into a corridor or a ceiling opening together.
• Occupants are present. In offices, schools and care locations you want to keep dust and noise to a minimum.

So the choice of equipment starts with the location, not with the duct. List your requirements and weigh them up when you duct cleaning equipment for businesses.

How do you reach a duct that has no access panel?

Many existing ducts have too few openings. The Eurovent recommendation on ductwork cleanliness gives a guideline: inspection openings no more than 10 metres apart, or after at most two bends of 45 degrees or more. Openings belong on both sides of dampers, coils, heat recovery, attenuators, filters and fans. For ducts wider than 500 mm, a panel of at least 500 by 400 mm is the guideline.

If those panels are missing, you have two options. You fit resealable inspection doors or small access panels afterwards; Danduct has those in its range. Or you work with a method that needs little access. The air lance with camera for cleaning contractors pulls itself through the duct with air pressure, works from 30 mm and handles tight bends, with 20 metres of hose included.

Making duct cleaning Den Haag verifiable

Government, education and healthcare together account for 16,660 establishments in Den Haag. Organisations like these often have an auditor, insurer or regulator who wants to see what has been done. This is what you record in each situation:

The advice to separate cleaning from the hygiene inspection comes from German VDI 6022 practice. It is not a Dutch obligation, but care organisations ask for it more and more often.

Schools: construction dust, CO2 and filters per classroom

Every classroom in primary, secondary and special education must have a CO2 meter (Building Works Living Environment Decree (Bbl) article 3.143). The Frisse Scholen (Fresh Schools) programme uses limits of 1,200, 950 and 800 ppm for class C, B and A, and asks for periodic technical and hygienic maintenance of the climate installation.

One point that is often forgotten: according to RVO (Netherlands Enterprise Agency), air ducts in newly completed schools turn out to be contaminated with construction dust. An inspection at handover is therefore no luxury. With decentralised ventilation, the installer also has to visit every classroom to replace filters, which is a good moment to check the grilles as well. Continue reading under air duct cleaning in schools.

Care locations: inspection every 2 years where there is humidification

Stricter agreements apply in healthcare. The SRI guidelines are the successor to the WIP guidelines for infection prevention. For operating theatres the guideline requires an air management plan covering technical management, maintenance and periodic checks.

Outside the operating theatre, the German VDI 6022 is a widely used benchmark: a hygiene inspection every 2 years for installations with humidification and every 3 years without. The first inspection belongs before commissioning, after a major modification or if an installation has never been inspected. For nursing homes this carries through to the page on ventilation in elderly care.

Choose the brush according to the duct material

Older buildings sometimes have a mix of sheet metal, flexible hose and duct board. The US EPA recommends soft brushes for fibreglass duct board and sheet metal. There are no EPA registered biocides for fibreglass duct board and coatings are not a routine measure.

Danduct supplies soft, standard and more aggressive Tynex brushes from 100 to 600 mm. For small ducts with bends there are more flexible shafts. An explanation per brush type is available under brushes for air ducts for cleaning contractors.

Fictional example: an office tower with one central shaft

A fictional office building of ten storeys has one central extract shaft with a branch on every floor. There is only one access panel, on the top floor.

Working order: first use the camera of the Airnozzle to map how dirty the branches are. Based on that, you fit extra panels where needed. Then you clean floor by floor from top to bottom, with the shaft under negative pressure and the valves covered. The report contains a before and after photo for each floor. That way the facilities manager has one document that can be used for each tenant.

The same logic works for the many mid rise blocks in the city: map first, add access only where the camera shows it is needed, and keep each tenant's section separate in the report. It keeps disruption low and the paperwork clear.

Ventilation duct cleaning Den Haag and the surrounding area

Do you also work outside the city? Rotterdam has 107,710 establishments and more industry: see air duct cleaning in Rotterdam. Haarlem, with 5,739 inhabitants per km2, is almost as compact: see ductwork cleaning for Haarlem businesses.

The full overview is under all cities for air duct cleaning. For a specific job in Den Haag you can duct cleaning advice for cleaning contractors to ask a question or request a quotation.