Why LEV Testing Is Critical for Workplace Safety and Legal Compliance

Here's the truth: An LEV system is only effective if it’s working properly. Over time, performance drops. Filters clog, fans slow down, and airflow weakens. Without regular testing, you could have a system that looks fine on the surface but isn’t actually keeping your employees safe, or your business compliant.

That’s why LEV testing matters. Knowing your system is doing what it’s supposed to do is crucial to keeping harmful substances out of the air and protecting the people who keep your business running.

At DevineAir, we conduct LEV testing in different workplaces, ensuring their people are safe and protected from possible harmful contaminants. 

What LEV Testing Actually Does

LEV systems are designed to capture harmful airborne contaminants right at the source, before workers can breathe them in. Over time, though, these systems can lose efficiency. Filters clog, fans wear out, ducts leak, and hoods lose their proper airflow.

That’s where LEV testing comes in. A proper LEV test checks the system’s performance to make sure it’s still doing its job effectively. It measures airflow, checks capture efficiency, and confirms the system is still controlling exposure to hazardous substances as required by law.

In short, LEV testing answers one critical question: “Is your system still protecting your employees the way it should?”

The Legal Side

Under the UK’s Control of Substances Hazardous to Health (COSHH) Regulations 2002, employers are legally required to ensure exposure to hazardous substances is controlled. If LEV is part of that control, it must be tested at least every 14 months — and in some cases, even more often depending on the industry and process.

Failing to do so can lead to:

• Enforcement action or fines from the HSE
• Potential shutdowns or stop-work orders
• Increased scrutiny during inspections
• Legal claims if employees suffer exposure-related illness

But beyond compliance, there’s a bigger picture here. Regular testing isn’t about meeting a regulation for the sake of it. It’s about keeping people safe and your business running smoothly.

Why Skipping Tests Isn’t Worth the Risk

You might think, “The system’s been running fine for years, do I really need to test it again?”

The short answer is yes. And here’s why:

• Airflow can change gradually. A small blockage or build-up might not be obvious, but it can drastically reduce capture efficiency.
  
• Wear and tear add up. Over time, fans, filters, and ductwork degrade, especially in dusty or corrosive environments.
  
• Health effects aren’t instant. Exposure to certain fumes or dust might take years to show symptoms, but the damage could already be done.
  
• Insurance and liability issues. If there’s an incident and you can’t show up-to-date LEV test reports, insurers may not cover you.

Skipping a test might save a few pounds today, but it can cost thousands later or worse, someone’s health.

Protecting Your Team Means Protecting Your Business

Healthy employees are productive employees. Poor air quality can cause headaches, fatigue, respiratory problems, and long-term health conditions like occupational asthma. That leads to:

• More sick days
• Reduced morale and focus
• Lower overall productivity

In contrast, a workplace that takes air quality seriously sends a clear message:
You value your team’s safety.

That’s something employees notice, and it can make a real difference in retention, trust, and company reputation.

How LEV Testing Works in Practice

A thorough LEV test involves more than just taking a quick airflow reading. A qualified engineer will:

1. Visually inspect the entire system for damage, leaks, or wear.
2. Measure airflow and pressure at different points to confirm performance.
3. Check the hood design and positioning to ensure it continues to capture contaminants effectively.
4. Assess filter and fan performance.
5. Record results and provide a detailed report with recommendations or required actions.

At the end of the test, you’ll receive a report showing whether your LEV system meets the required standards or if adjustments, repairs, or replacements are needed.

This isn’t just paperwork; it’s your proof of compliance and your peace of mind.

Common LEV Testing Issues (and How to Avoid Them)

During testing, a few common issues tend to come up:

• Poor maintenance. Systems not cleaned or serviced regularly perform below standard.
• Damaged ducting or loose fittings. Even small leaks reduce efficiency.
• Incorrect hood design or positioning. Workers moving equipment over time can affect how well the system captures contaminants.
• Missing or inaccurate records. If test reports and logbooks aren’t up to date, it can create problems during inspections.

The best way to avoid these issues is through regular maintenance and clear documentation. Your LEV logbook should include test results, maintenance records, and any changes made to the system.

Why Compliance Is Good for Business

Staying compliant with LEV regulations isn’t just about keeping the HSE off your back, but also good for business.

• Healthier employees mean fewer absences and higher morale. When your systems are properly tested and maintained, you’re not only protecting your employees but also protecting your bottom line. Healthy teams mean fewer absences, better morale, and higher productivity. It’s a simple equation: when people feel safe, they work better.
  
• Reliable LEV systems also reduce the risk of costly downtime, damaged equipment, or accidents that could grind operations to a halt. And if you’re tendering for contracts or working with clients who take health and safety seriously, a strong compliance record can set you apart from competitors.
  
• Keeping your workplace clean and compliant doesn’t just make audits easier. It shows that your business takes safety and responsibility seriously. Clients, contractors, and partners notice that. In fact, many larger organisations now look for clear evidence of health and safety compliance before agreeing to work with a company.

It’s not just about staying legal. It’s about building a workplace that runs efficiently, safely, and responsibly.

The Bottom Line

LEV testing isn’t just about meeting legal requirements, but more about protecting your people and keeping your business running safely and efficiently. A properly maintained system helps prevent health issues, costly downtime, and compliance headaches, while showing clients that you take safety seriously.

If it’s been a while since your last test, now’s the time to act before a small issue becomes a big problem. DevineAir can help with LEV Testing, Design, Consultancy, Logbooks, Awareness Training, Fume Cupboards, MSCs, KI Discus Testing, Maintenance & Contracts, and Airflow Indicators — everything you need to stay safe and compliant.

Need help staying compliant? Contact DevineAir today, and we’ll make sure your LEV systems are performing exactly as they should.