All companies are mandated by law to ensure the continuous operation of their Local Exhaust Ventilation (LEV) system. Failure to do so could harm you or your employees. LEV testing and certification by expert engineers at Total Clean Air will keep your equipment in full working order in compliance with statutory regulations.

Our unique e-certification system allows you to keep your LEV testing reports and certificates under control. The custom-built portal is available 24 hours a day and allows you to view your documents, making misplacement of your hard copy certificate a thing of the past. All documents can now be accessed and printed at any time, via the safe login information provided by us.

When you are looking for an LEV test and certification, your first touchpoint for a free quote and high-quality service should be our support team. We are available nationwide. Call Total Clean Air now on 01737 924700 to get started on your LEV testing.

Total Clean Benefits

  • All Work Is Guaranteed
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  • Operational Qualification
  • Performance Qualification
  • References Available

What is Local Exhaust Ventilation Testing and Certification?

Local Exhaust Ventilation Testing and Certification is a check performed by experts to ensure that the LEV system is working as it should do and in compliance with regulatory codes.

Every LEV system is mandated by law to be thoroughly examined and tested, at least once every 14 months, by a qualified professional. The employer is expected to keep a copy of the report for at least five years.

The LEV test and certification is designed to maintain general workplace indoor air quality and prevent employees from inhaling fumes and dangerous dust that could cause harm to their health.

Local Exhaust Ventilation (LEV) is an engineering system designed to limit workers’ exposure to airborne contaminants such as dust, fumes, mist, gas, vapours, and so on in the workplace by capturing their release at the source and transporting them to a point or filter where they are safe to be emitted.

Total Clean Air - Testing & Validation Services

Contact us today and find out how we can best serve you on your next project.

What are the Types of LEV?

There is a vast array of LEV systems with different shapes and sizes. The following are the main types of LEV system:

Partial Enclosure Hoods – In this system, the process is not enclosed fully, and the operator can easily access it. The system draws the air and transports it past the operator into the enclosure.

Partial enclosure hoods are an effective solution in many applications. This type of LEV can be constructed around the contamination source. Spray booths are an example of a partially enclosed LEV system.

Full Enclosure – In this type of LEV, all the sides are enclosed hiding the hood. Air is drawn from the container.

CNC boxes and glove boxes are examples of fully enclosed LEV systems.

Receiving Hoods – This type of LEV system is designed to capture the contaminants that have initial movement at the source. The initial movement provides the energy needed to transport the emission to the hood.

Capture Hoods – In this system, the hoods are constructed next to the source of emission without enclosing the hood. The contaminant is pulled into the system.

Examples of a capture hood LEV type are welding extract and downdraft tables.

Ductwork Inspection and Reporting

As part of a planned maintenance routine, LEV duct systems need to be checked and cleaned regularly to keep the system working efficiently, and to protect against hazards such as accumulated dust, bacterial moulds and fungi, polluted air, and fire within the LEV duct system.

To ensure continuous and efficient operation, Total Clean Air uses the latest technology and procedures and employs only extensively trained and experienced personnel to inspect the ductwork and survey your LEV duct systems.

After completing the survey, we provide our customers with a detailed report of the state of the ductwork including the pictures of individual components and video of the inspection.

What Does our Service Cover?

  • Visual inspection of the state of the LEV equipment, ductwork, and associated components
  • Unit inspection and monitoring which may require calculated amounts of any device contaminated using a process approved by BS EN 15780:2011
  • Microbial samples can be obtained from separate LEV and ducting units to help establish the standards of cleanliness in each system.
  • The findings will be graphically illustrated and benchmarked against industry and healthcare standards to help illustrate and measure the severity of any pollution.

All our recommendations are consistent with industry regulations and industry best practice. Our recommendations are designed to help you determine the existing risks and prepare a timetable for future maintenance.

Total Clean Air - Testing & Validation Services

Contact us today and find out how we can best serve you on your next project.

Fire Damper Testing and Operation Certification

A fire outbreak can cause significant damage to the workplace and assets. In addition, you could face higher insurance claims resulting from a fire outbreak.

Therefore, fire dampers are designed to stop the spread of fire in the ductwork, ceilings, and floors. If there is a fire outbreak in the building, the fire dampers will close, keeping the fire from spreading from one place to another.

Legislature stipulates that approved fire dampers be installed where air ducts enter or end at openings in walls or partitions requiring a fire-resistance rating of 2 hours or more.

Since fire dampers are open most of the time, it is important to ensure that they still close efficiently when necessary.

Fire dampers in full working condition save lives by creating a barrier over which the fire cannot pass. So routine fire damper checking, also known as drop testing, as well as fire damper cleaning and repair are both required by law and a vital part of building fire safety management.

The British Standard BS 9999 states that after installation, provisions should be made for all fire dampers to be tested by a qualified technician at least every 12 months. Furthermore, if any fault is found, it should be repaired or replaced immediately. This is because over time, as the ventilation is used, it accumulates dust on the fire damper and its working parts. The dust accumulation must be removed to ensure the fire damper works as expected should a fire occur.

At Total Clean Air, we provide fire damper testing by locating all your fire dampers, ensuring they are within the right fire containment areas and are easily accessible.

Our inspection process includes cleaning, lubricating, drop testing and resetting to ensure that all fire dampers are in perfect working order.

Our Fire Damper Drop tests comply with the practice code for ventilation and air conditioning ductwork (BS 5588-9) as well as BS 9999. Call 01737 924700 today to inquire.

Our Fire Damper Testing Process

Step 1: Once our ducting experts get to your site, we will locate all the fire dampers in your building. We will then ensure that we can access every damper and, if necessary, will cut doors to access it.

Step 2: Next, we will number each damper with test point labels. This is to ensure we record our findings against the right damper and ensure we do not miss any of them.

Step 3: We will then proceed to clean, lubricate, drop test and reset each damper to ensure that it is in good condition and able to perform its task of blocking fire from spreading through your ventilating system.

Step 4: If we find any problems with the operation of your fire dampers, or if any of their parts appear to be damaged, we will report them to you so that you can arrange for them to be replaced. To comply with BS 9999 you need to ensure immediate replacement of all faulty parts of your fire dampers.

Step 5: We will provide you with a written report of all our findings and recommendations along with photographic evidence after we have performed the fire damper drop-test.

If necessary, we can also assist you in developing a maintenance plan to ensure that you comply with BS 9999 by maintaining your fire dampers at regular intervals.

Annual Testing and Certification

Since Local Exhaust Ventilation is a safety mechanism under COSHH regulations, it is mandatory that it be checked and tested routinely and properly, meaning that businesses using LEV to control hazardous substances must ensure that it works efficiently. The maximum time between each test should not be more than 14 months for most systems. However, other LEV systems, to comply with this legislation, require more regular inspection as well as a visual integrity check as specified in the statutes.

The test measurements are detailed reports assessing the velocities of the duct, flow rates and static pressures. To assess their condition and performance, all parts of the system including fans, ducting, filters, and exhaust are examined.

Total Clean Air can arrange for an annual package to be integrated into a service contract to meet all your LEV monitoring needs, significantly minimising expenses and inconvenience and removing the need for additional visits.

Our inspection ensures that everything works to the specifications of the original manufacturers and that the hazardous substance is effectively controlled.

We currently represent a wide variety of industries in the electronics, chemical, printing, education, and woodworking industries, from small to large enterprises. This experience enables us to carry out appropriate Local Exhaust Ventilation Testing for the operating process.

Total Clean Air - Testing & Validation Services

Contact us today and find out how we can best serve you on your next project.

COSHH Compliance

COSHH is an acronym for Control of Substances Hazardous to Health.

COSHH is the law requiring employers to control substances that are dangerous to health in the workplace. Most companies use substances or products that are a mixture of substances. Also, in some processes, substances are created. These could be potentially harmful to employees, contractors, and others.

While the main concern is workers’ safety, it can cost businesses astronomically. For example, in 2017/2018, injury in the workplace cost businesses in the UK a whooping £5.2bn.

Businesses can save money and be more effective if they comply with COSHH regulations. If your workforce is healthy, your bottom line will be healthy.

You need to follow these eight steps to comply with COSHH regulations:

  • Step 1: Find out what the hazards to your health are.
  • Step 2: Decide how to prevent harm to health by performing a risk assessment of COSHH.
  • Step 3: Provide control measures designed to reduce harm to health.
  • Step 4: Make use of the control mechanisms.
  • Step 5: Keep all control mechanisms in good working order.
  • Step 6: Provide the employees and others with information, instructions, and training.
  • Step 7: Provide reporting and, where applicable, health surveillance.
  • Step 8: Have a viable plan for emergencies.

We offer comprehensive COSHH Air Monitoring to determine the levels of substances in the workplace and to ensure that the WEL value for the substances you are using is not exceeded.

Together with recommendations for remedial action and risk assessment advice, we will provide a detailed report on work practices and findings to ensure compliance with relevant workplace exposure limits. Call 01737 924700 today to inquire.

Health and Safety Compliance

Compliance with health and safety regulations is a serious business.

By putting the onus on companies and employees to have a safe atmosphere, the laws help to protect against harmful and often catastrophic situations. Directors may be held individually accountable and, particularly so, where this duty of responsibility is neglected.

The key provisions of these regulations mandate employers to provide:

  • Sufficient lighting
  • Heating
  • Ventilation
  • Safe passageways
  • Workspace
  • Clean work environment
  • Washing facilities
  • Showers
  • Refreshment facilities

Failure to comply with UK health and safety regulations can be harmful to your business. You could be prosecuted as an employer, fined, and jailed in some severe cases.

Total Clean Air has the expertise to ensure that the risks to health from hazardous substances are managed in a systematic manner proportionate to your operational activities.

Our clients know that we offer realistic, no-nonsense guidance about what you need to do to build and sustain a secure and stable work atmosphere.

Our health and safety consultancy team takes pride in keeping our clients’ health and safety simple and straightforward.

Please call 01737 924700 or drop us a line at if you need our professional assistance, or even for a casual chat.

Total Clean Air - Testing & Validation Services

Contact us today and find out how we can best serve you on your next project.

Operator Safety

Moving machines can cause injuries in many cases. Persons can be hit and injured by moving pieces of the equipment or the material being thrown. Furthermore, sharp edges can cause injuries through cuts and severing. Injuries can also occur because the machines become unreliable and faults develop, or when machines are misused due to inexperience or a lack of training.

Employers need to provide training to ensure that employees can safely use their machines and know how to make the best use of it to avoid health issues.

Please call 01737 924700 or drop us a line at if you need our professional assistance, or even for a casual chat.

HSG 258 Compliance

HSG 258 is the Health and Safety Executive’s new directive on Local Exhaust Ventilation (LEV) systems which offers information to LEV system manufacturers, consumers, and testers.

At Total Clean Air we can provide regular checks and testing of the extraction systems and that it is in compliance with the HSG 258 rules and regulations on airborne pollutants at the workplace under a maintenance contract.

Contact us for further information, or to further explore compliance.

Legal Obligation

Through COSHH Regulation 9, it is a legal obligation that businesses that use LEV systems must ensure that they work efficiently. The LEV regulations explicitly mandate that Local Exhaust Ventilation Inspection and Evaluation be performed at least once every 14 months.

The HSE estimates about 100,000 businesses in the UK are using LEV systems to combat airborne hazards. This includes 2.6 million workers. Of those companies, only 40,000 have their LEV systems tested on a regular basis. This, therefore, leaves 60,000 enterprises open to the contravention of the COSHH regulations.

To put it in perspective, this leaves 1.6 million workers potentially at risk. Total Clean Air can provide LEV testing carried out by competent technicians who are P601 qualified.

Keep your staff safe and protect yourself and your business from lawsuits by ensuring that your company complies with COSHH Regulation 9.

Total Clean can help you with our specialised LEV testing service.

Fully Reported and Individually Certified

Total Clean Air testing engineers fully experienced and testing is performed in accordance with COSHH 2002 and HSG 258 regulations.

To identify any potential defects, we perform a complete visual examination on ducting, extraction hoods, fans, filter units, and every other relevant component.

Using smoke tests, or laser photometer checks, we evaluate your system’s capability to monitor dangerous materials.

In the LEV evaluation report, we give a ‘satisfactory’ notice if the device meets the main requirements.

Total Clean Air’s reports are always detailed on the efficiency of the LEV system along with any guidelines for necessary action.

We will include a user manual and logbook as part of a robust kit for new or previously undocumented programmes.

Where a system is ‘unsatisfactory’ during testing, Total Clean Air will work with you to find a cost-effective solution that complies with regulations.

Get in touch today to discuss your LEV testing and certification requirements. Please call 01737 924700 to get started.

Total Clean Air - Testing & Validation Services

Contact us today and find out how we can best serve you on your next project.

Phillip Godden

Phillip Godden is the Founder & Chief/Executive Officer at Total Clean Air.

Working Hours

  • Monday 08:00 - 19:30
  • Tuesday 08:00 - 19:30
  • Wednesday 08:00 - 19:30
  • Thursday 08:00 - 19:30
  • Friday 08:00 - 19:30