How Often Should LEV Systems Be Tested? HSE & COSHH Guidance by PassLEV

How Often Should Your LEV System Be Tested?

If your workplace uses a Local Exhaust Ventilation (LEV) system to control dust, fumes, or

vapours, it’s vital to keep it operating efficiently. Regular testing not only ensures

compliance with the Health and Safety Executive (HSE) regulations but also protects your

employees from dangerous airborne contaminants.

The HSE’s 14-Month Rule Explained

Under the Control of Substances Hazardous to Health (COSHH) Regulations, all LEV systems must undergo a ‘Thorough Examination and Test’ at least once every 14 months. This ensures the system continues to effectively capture harmful substances and function as

intended.

When More Frequent Testing Is Required

Certain LEV systems and processes demand more frequent testing due to higher risk

factors. For example:

- Shot-blasting or metal polishing: every 6 months

- Toxic dust or fume processes: every 6 months

- Woodworking extraction: every 12 months

- Other general processes: every 14 months

These intervals align with HSE guidance HSG258 and ensure your workplace remains safe

and compliant.

Why Regular Testing Matters

Even well-designed systems can lose efficiency over time due to wear, filter clogging, or fan

damage. Regular LEV testing helps identify performance drops before they pose health risks

or compliance failures. Keeping up with testing also demonstrates your commitment to

health and safety during audits or inspections.

Servicing vs Testing — What’s the Difference?

LEV testing checks your system’s performance and compliance, while servicing focuses on

maintenance and repair. Ideally, both should work together — testing identifies issues, and

servicing fixes them. PassLEV offers combined LEV testing and servicing packages to

streamline this process for you.

How to Schedule and Prepare for a Test

To make your next LEV test run smoothly:

1. Keep previous LEV reports handy.

2. Ensure systems are accessible and operational.

3. Inform your staff of the testing schedule.

4. Fix any known mechanical issues beforehand.

PassLEV's engineers provide a clear testing plan and communicate each step to minimise

disruption.

Stay COSHH Compliant with PassLEV

Our team of qualified LEV examiners offers UK-wide service, detailed digital reports, and

expert advice. We test, service, and maintain all types of LEV systems in line with HSE

guidance. Book your next LEV test today and keep your business fully compliant.

Contact Us

Call: 01772 846843

Email: info@passlev.co.uk

Website: www.passlev.co.uk