Top 5 Signs Your LEV System Needs Testing or Maintenance | PassLEV

Top 5 Signs Your LEV System Needs Testing or Maintenance

Your Local Exhaust Ventilation (LEV) system plays a vital role in keeping your workplace

safe from airborne contaminants like dust, fumes, and vapours. But how do you know when

your system needs attention? In this guide, we outline the top five signs that it’s time to

schedule LEV testing or maintenance.

1. Visible Dust or Fumes Near the Extraction Point

If you can see dust clouds or fumes escaping near the extraction hood, your LEV system may

not be capturing contaminants effectively. This could indicate reduced airflow, a blockage,

or an issue with the hood positioning. Immediate testing is recommended to prevent

exposure risks.

2. Noisy or Struggling Fan Unit

Unusual noises, rattling, or vibration from your extraction fan are warning signs of

imbalance, wear, or impending mechanical failure. Servicing the fan early can prevent costly

downtime and maintain safe airflow levels.

3. Reduced Suction or Poor Airflow

A noticeable drop in suction could be caused by clogged filters, damaged ductwork, or a

failing fan motor. Reduced airflow compromises your system’s ability to remove harmful

particles — and could lead to failed HSE compliance tests.

4. Damaged Ductwork or Filters

Cracked, corroded, or loose ducting can cause leaks that reduce extraction efficiency.

Similarly, dirty or worn filters can restrict airflow and allow contaminants to escape.

Routine maintenance ensures these components are replaced or repaired before

performance drops.

5. Out-of-Date LEV Report or Certification

If your LEV report is more than 14 months old, it’s time to book a new test. HSE regulations

require regular ‘Thorough Examination and Testing’ to verify your system’s effectiveness.

Missing these tests risks non-compliance and potential enforcement action.

Why Addressing Issues Early Matters

Ignoring warning signs can result in poor air quality, equipment damage, and costly repairs.

More importantly, it puts worker health at risk. Regular testing and proactive maintenance

by a qualified provider like PassLEV keeps your workplace compliant and safe.

Book Your LEV System Check Today

If you’ve noticed any of these warning signs, contact PassLEV today. Our certified engineers

provide LEV testing, servicing, and repairs across the UK.

Call: 01772 846843

info@passlev.co.uk 01772 846 843