Find companies for LEV testing at your workplace, or request quotes.
The essentials
What is LEV testing?
LEV testing is a thorough examination and test of extraction equipment, needed at least every 14 months. See what is checked and what a failed result means.
Planning ahead
How often is LEV testing required?
LEV must be thoroughly examined and tested at least every 14 months. See the four processes with shorter limits, when to test sooner and what to keep.
The law
LEV testing regulations: what the law asks of you
COSHH LEV testing explained: regulation 9 needs a thorough examination every 14 months. See the chain of law, who holds the duty and what the ACOP means.
On the day
What happens during an LEV test?
An LEV test is a visit where an examiner inspects your extraction, measures airflow, watches smoke and dust, then reports. See each step and what to prepare.
After the visit
Your LEV test report and certificate explained
An LEV test report, often called an LEV certificate, is the record of a thorough examination and test. See what it should contain and how long to keep it.
Before you book
LEV testing cost: published prices and what to compare
Five listed companies publish LEV test prices from £150 to £250, read on their sites on 8 November 2026. See what changes the price and what to ask testers.
Before you book
How to choose an LEV testing company
Choose an LEV testing company in six steps: the evidence of competence to ask for, a question checklist, how to compare quotes and what LevHQ does not check.
The rules
HSG258 explained: the HSE guide to LEV
HSG258 is HSE's free guide to LEV. See which chapters and paragraph numbers cover buying, commissioning, daily checks and testing, and whether it is law.
The basics
What is local exhaust ventilation (LEV)?
Local exhaust ventilation (LEV) catches dust, fume and vapour at the source. See how an LEV system works, the hood types, warning signs and what HSE advises.
Before you book
LEV tester qualifications: P601, P602 and P604 explained
Understand P601, P602 and P604, what HSE says about competence, and why ILEVE is dormant. Find out which evidence to ask an LEV tester for before you book.