Wet and Dry Vacuum Cleaners

  • A Simple Guide to L-Class

    Vacmaster 110V L Class Vacuum Cleaner

    What is an L-Class, M-Class and H-Class vacuum cleaner? And why you need to know about it for your business.

    This is one of the most common questions our customers ask. To help answer this, we’ve put together a simple guide to take you through what you need to know.

    L-class in the Workplace

    In the construction industry, health & safety is understandably key. There are so many hazards on building sites that employees’ personal health and safety can be at risk.

    One of the most significant hazards that workers face is from construction dust created by power tools. If you can see dust then you’re probably breathing it in. Long-term exposure to certain dusts can lead to chronic illnesses such as lung disease, silicosis and cancer. As such, the HSE (the government run Health & Safety Executive) have made dust a primary focus, giving out fines of up to £2000 where inefficient, incorrect, or no dust extraction is being used.

    To keep everyone safe, it’s crucial that your tools are right for the job. Having a vacuum cleaner with a certified level of dust extraction is a vital part of this. It not only keeps you within the law, but also minimises your exposure and keeps the potentially harmful dust particles safely contained.

    There are three levels of classification; low, medium and high. Each level is suitable for extracting certain materials. The type of dust you’re working with and how harmful it is, determines the level of classification.

    ‘L’ Class extractors are suitable for lower toxicity dusts such as soft woods (cedar, pine, yew), while ‘M’ Class extractors, being the next step up, are used for hard woods, bricks and concrete. ‘H’ Class vacuum cleaners have the highest level of filtration and are used to extract extremely harmful materials such as asbestos, formaldehyde and even carcinogenic substances.

    The table below is a quick guide to which level of classification is suitable for which materials. A more comprehensive guide can be found on the HSE website.



    L Soft woods, gypsum, plasterboard, Corian >1 >99
    M Hard woods, paint, plastics, concrete, brick >0.1 >99.9
    H Lead,carbon, tar, asbestos, formaldehyde, mould, bacteria, copper, nickel <0.1 >99.995


    Other Benefits

    Of course, staying safe in the workplace isn’t the only benefit of having an L-class 110V vacuum cleaner. Some professional and industrial models also feature a power take-off facility. This allows you to plug your power tool directly into the vacuum cleaner, automatically turning it on and off with the switch on your tool. In a busy working environment this means you can vacuum as you work, saving vital time.

    Our  Vacmaster 110V L-Class vacuum cleaner £119.94, comes with a power tool take-off socket and also features delayed shut-off. This is where the vacuum continues to run for around five seconds after the power tool has been switched off, to clear both the tool and hose of any remaining dust.

    How to Identify a Classified Vacuum Cleaner

    L-class vacuum cleaners that have been certified as meeting HSE standards are easy to spot.  The level of classification should be prominently displayed in the form of a sticker attached to the machine (see our picture above). If it doesn't have the sticker and you're in doubt as to whether it's classified or not, contact the the manufacturer. They should be able to provide a certificate of classification.  To earn their certificates, vacuum cleaners must be equipped with approved filters which have passed through a specialised test at an accredited institute to ensure that they're fit for purpose. The higher the level of classification, the more tests it will have passed through, with more specialised equipment. For this reason, you can expect to pay more for a classified machine than you would for a standard household vacuum cleaner.

    Don’t leave it there! If you have any comments or questions, please send us an email at sales@cleva-uk.com.

  • Understanding your Watts from your Amps

    Vacmaster vacuum cleaner Watts rating label

    What's a Watt? When it comes to choosing a new vacuum cleaner, understanding the difference between Watts, amps and volts leaves a lot of us in the dark. Yet, many of us will choose one model over another simply because it has a higher Watt rating.  But does that really mean it's more powerful? We’ve put together a guide to help you understand exactly what all the tech-talk means. So, the next time you're out looking for a new vacuum cleaner, read on and find out exactly what to compare so you can make your next purchase with confidence.


    Watts (the amount of energy consumed per unit of time) measure the power of the motor inside the vacuum cleaner at maximum capacity, but not the overall efficiency or performance of the machine.

    Less efficient motors  (motors that are capable of taking a greater load than the fan needs it to) will have a high wattage value, but this doesn't necessarily mean that the suction power is better. Vacuum cleaners with low Wattage don't always have it advertised as a feature. As such, it is not always the most accurate tool to use when comparing vacuum cleaners, but despite this is still the most common method.


    Amps are more commonly given out by manufacturers in the US, it rates the electrical usage of all the components of the vacuum cleaner put together, but not the overall efficiency. The maximum number of amps that can be used by an electrical appliance in the UK is 13 Amps.


    In the UK, the voltage that all domestic appliances run on is 240V. This is the standard voltage of electricity outlets.  The only exception to this in the UK is a specialist 110V electrical supply system for machines (including vacuum cleaners) that are built for use with 110V Centre to Earth (CTE) power transformers. These are a legal health & safety requirement on building sites.  They have a yellow three-pin plug as opposed to the British standard three-pin and won’t work in your home.

    Water lift

    In the US, vacuum cleaners are often put through a water lift test to see how powerful the suction is. The unit is sealed and attached to a tube of water. The test is to see how far the machine can lift the water level. In basic terms, the higher the water lift the better the suction power of the machine. The highest value is seen when the airflow is blocked, but it doesn't reflect normal conditions. It does however, show how well a blockage could be cleared by the suction power.


    In Europe, the kPa (kilo Pascal) is the metric measurement used to show the maximum suction pressure. Very similar to water lift, this value is also highest when the airflow is blocked therefore it is only a peak value and not a cleaning value that is comparable to other vacuum cleaners. It does show how well a blockage could be cleared by the suction power.

    Air watts

    An Air Watt is a way to define the suction power of a vacuum cleaner. More specifically, it measures the energy of the suction airflow created by the vacuum cleaner. It gives a more accurate indication of performance than looking individually at other measurements, as it was specifically invented to give consumers the tools to make more informed decisions when comparing products, and is only used on vacuum cleaners.

    When testing the air watts, the air inlet size is gradually reduced in order to simulate everyday blockages that can occur in vacuum cleaners. The best result is somewhere in the middle range, where suction power and airflow are maintained at a good level during the partial blockage.

    Air Watts Measurement



    Depending on what you are using your vacuum cleaner for, how much dust it filters is very important to consider. The better the filter, the finer the dust particles it captures and prevents from passing back into the air you breathe. The highest rated filters on domestic machines will filter 99.97% of dust and allergens as small as 0.3 microns. Machines with a higher level of filtration must have a higher power to enable it to pull debris through the complex filter. The often means that vacuums with a HEPA filter are more expensive, because of the higher level of airflow they demand.

    PTO (Power Take Off)

    Power Take Off (PTO) is a term used to describe an additional power socket that is fitted onto a vacuum cleaner unit. Most commonly used for plugging in electric power tools for synchronised dust extraction, some PTO sockets also feature an integrated switch that enables this. Our best-selling VQ1220PFC Multi 20 is prime example of a vacuum cleaner with PTO.


    Capacity is simply the size of the collection tank on your vacuum cleaner. Smaller capacity means you must empty your machine more often to avoid losing suction power. The bigger the capacity, the larger the airflow and cleaning ability. When considering the capacity, you’ll need, think about how often you use your vacuum cleaner and what you’re vacuuming, bigger is not necessarily better when it comes to being economical.


    Depending on where you want to use your vacuum cleaner, noise can be a deal-breaker. The more power the machine has, naturally it will be louder, but some vacuums are louder than others. It is always worth checking the decibels (dB) of the device.

    There are two dB measurements, Sound Power (cause) and Sound Pressure (effect). Sound Power is the noise emitted by the machine, this is the louder of the two, and is often quoted by manufacturers. Sound Pressure is the noise measured by the time it reaches your ear, and is always the quieter of the two.

    To give you an idea of what decibels mean, a normal conversation at home is usually rated around 50dB, while a lawn mower is around 90dB, and a car horn is around 110dB. The average vacuum cleaner is around 80dB, but there are models out there that are designed to operate quietly. A quiet vacuum cleaner would operate at around 65-75dB, for example our Vacmaster Quiet operates at 72-74dB.

    Don’t leave it there!

    Of course, there are a range of other factors that will influence your decision when purchasing a vacuum cleaner, not just the Watts! The price, brand, look and specific features to suit your personal needs are all important.  We hope our technical guide helps you find the best  vacuum cleaner, with the right specification for what you need and helps you get the most for your money.

    If you have any questions don’t hesitate to get in touch by leaving a comment in the section below or send us an email at sales@cleva-uk.com.

  • How to Build the Perfect Fire

    Getting a long-lasting, roaring fire started quickly and mess-free can be much more challenging than you might think. That’s why we’ve compiled a step-by-step guide on how to build the perfect fire.
  • New EU Rules for Vacuum Cleaners: What do they mean for you?

    From Friday, 1st September new EU regulations will affect the sale and import of corded vacuum cleaners sold in the EU. Here's what you need to know about the changes.
  • How to Clean Up After a Leak or Flood

    When your house floods, the water can damage your floors, belongings and even the structure of your home. Below are our top tips for cleaning up and drying your home after a major leak or flood.

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