Subject Line: One partner for LEV testing, servicing, training and installation

Local exhaust ventilation only protects people while it's working properly. A system that passed its test two years ago and hasn't been checked since isn't a safeguard, it's an assumption. Airflow drops as filters load and ductwork wears, often well before anyone notices, which is exactly why COSHH requires LEV systems to be tested at least every 14 months rather than left to judgement.

Testing to that standard, done properly and on schedule, is what keeps a workplace's air genuinely safe, and it's the whole reason McCarthy Environmental exists. We've spent 25 years specialising in LEV testing and COSHH compliance, not as a sideline alongside general facilities maintenance, but as the entire business. That length of time matters in a field like this: it means the testing methods, the reporting standards and the engineers doing the work have all been refined against real sites over 25 years, not built from scratch to win the next contract. We hold ongoing servicing, design and installation contracts across facilities and education sites, including several universities, and those relationships tend to last because we work with each site to schedule testing at a time that causes the least disruption.

LEV testing and compliance Scheduled, engineer-led testing against COSHH requirements. Full reporting that meets COSHH documentation requirements, giving you a clear, accurate record of exactly where each system stands.

Servicing and maintenance Testing tells you where a system stands, but it's servicing that keeps it there. Filter changes, ductwork checks and general upkeep between formal tests catch the small issues, reduced airflow, wear, and blockages before they turn into a failed test or a system that's quietly stopped protecting anyone.

Design and installation New extraction systems and upgrades to existing ones, specified and fitted by the same team who go on to test them. That continuity matters when something needs adjusting two years into a system's life, and whoever turns up already knows the site.

BOHS-endorsed training P601 and LEV Awareness courses, delivered by our own industry experts, so your facilities or estates staff can carry out the day-to-day checks between formal tests and understand what they're looking at when they do.

Why sites choose to stay Compliance work is easy to get wrong through no fault of your own, an inconsistent tester, a report that doesn't hold up, a system installed by someone who isn't the one testing it, or maintenance nobody's kept on top of between visits. Consolidating testing, servicing, training and installation with one specialist removes most of the points where that goes wrong, and it's why our education and facilities contracts tend to run for years rather than a single renewal cycle.