Hiring the wrong company to handle your dust extraction is not just a waste of money. It is a safety risk. Bad installs, wrong equipment, and poor advice have all contributed to worker injuries and enforcement action from regulators. Finding genuinely reliable industrial dust extraction experts means knowing what questions to ask and what red flags to watch for. The dust extraction market is full of vendors who sell equipment but few who truly understand compliance, airflow engineering, and hazard classification.
Do They Actually Understand COSHH and Exposure Limits?
Any expert worth hiring should be able to cite the Control of Substances Hazardous to Health Regulations 2002 off the top of their head. They need to understand Workplace Exposure Limits (WELs) for your specific materials. The WEL for wood dust is 3 mg/m3. For silica it is 0.1 mg/m3. If a vendor cannot tell you the relevant WEL for your industry in the first conversation, they are not the right hire. Compliance is not a bonus. It is the baseline.
What Qualifications Should a Dust Extraction Expert Hold?
In the UK, look for professionals with BOHS qualifications. The British Occupational Hygiene Society runs the P601 module specifically on assessment and control of occupational exposure to hazardous substances. CMIOSH (Chartered Member of the Institution of Occupational Safety and Health) is another strong credential. In Australia, OHS qualifications from AIHS members carry similar weight. Certifications signal training, but also accountability. Unqualified vendors who talk a good game are common. Qualified ones with documented assessments are rare and worth finding.
How Do You Know If Their System Design Is Actually Correct?
The key is whether they conduct a proper assessment before recommending anything. That means site visits, measurement of dust generation sources, review of your materials, and airflow calculations. Credible experts use the LEV (Local Exhaust Ventilation) design process recommended by the HSE in HSG258. If a company sends you a quote after a 10-minute phone call, walk away. Proper system design takes time and involves measurement. Anything else is guesswork dressed up as engineering.
Should You Ask for References From Their Past Industrial Clients?
Always. And do not just collect the names, actually call them. Ask if the system passed an LEV examination, which is the mandatory annual test required under COSHH Regulation 9. Ask if the HSE has ever visited the site and whether the extraction equipment was flagged. A solid extraction provider will have a list of clients who have passed examinations without issue. A sketchy one will dodge the question or give you a reference who turns out to be a friend. The extraction industry is small and reputation moves fast.
Is Experience in Your Specific Industry Non-Negotiable?
Yes. Dust extraction in a pharmaceutical cleanroom is completely different from extraction in a timber yard. Pharma environments require ISO-classified cleanrooms and HEPA filtration meeting standards like EU GMP Annex 1. A timber yard needs high-volume systems with spark arrestors because wood dust is combustible. A company that specialises in one environment rarely transfers that expertise cleanly to another. Ask specifically how many projects they have completed in your sector and what the outcomes were.
What Does Good Aftercare and Maintenance Support Look Like?
The extraction system is not a one-time purchase. COSHH requires LEV systems to be thoroughly examined and tested at least every 14 months. Some high-risk environments need it every year or more. A reliable expert will offer planned maintenance contracts, keep records of each examination, and provide a formal report after every test. The HSE says employers must keep examination records for at least 5 years. If your vendor does not offer structured aftercare, you will end up doing the compliance paperwork yourself while hoping the system still works.
