Tough energy efficiency standards for air filters

As the price of everything continues to rise and the demands for reducing CO2 emissions become more essential than ever, energy consumption related to air filters is our focus of attention.

The latest update to the Eurovent energy efficiency scheme came into effect in 2015.

With a new A+ grade and tougher limits, Eurovent 4/21 is good news for our customers and the industry alike.

Very best filters

Since the 4/11 programme was introduced in 2012, great strides have been taken in air filter technology. The products available today are now so efficient in their energy usage that the previous grading structure was no longer appropriate.

Eurovent 4/21 places a tougher limit on each grade and is structured to put a percentage of products into each category, so only the very best filters will achieve the highest classifications.

Eurovent energy efficiency classifications

Buyers of air filters will now find it a lot easier to find the right filter both in terms of energy efficiency and indoor air quality.

We’re a Eurovent Certified Company and have taken on board its new, objective energy efficiency classification are implementing it.

A+ is lowest energy consumption

All air filters can be graded from A+ to E: with A+ for the lowest energy consumption and E for the highest.

There are two key benefits for buyers and end-users:

• Selecting a higher-grade filter product will really mean you are choosing one of the most efficient options possible.
• The new classification encourages greater competition and product development, meaning better air filters with better performance. This tougher Eurovent 4/21 will result in air filters that offer even lower operating costs and energy consumption.

Eurovent 4/21 – energy consumption by filter grade (kWh)

The resulting effect of this re-structuring is that around 14% of all products will be downgraded from an A class – even those that fall just outside the new limit.

It should be remembered that the performance of these products has not deteriorated in any way; they still provide excellent energy efficiency. There is now simply more room for improvement.

It is also worth highlighting the difference in energy efficiencies between each filter grade. An A+ rated F7 filter could consume the same amount of energy as a B rated M6, for example.

So, it is crucial to choose a product according to what is required; not to over-specify the filter grade or select based upon purchase history.

The key is choosing the filter that will deliver the correct level of air cleanliness at the lowest possible energy consumption.

Working out the kWh number used in an air filter’s energy rating

• The filter is loaded with AC fine dust as specified in ISO 15957as L2in increments mtot and the pressure drop noted ∆P2
• A loading curve is then plotted on a graph
• Once the average pressure drop has been established, the equation below is used to calculate the Energy Rating in kWk. Calculation used in the new Energy Efficiency classification by Eurovent
• The kWh figure is purely a benchmark to compare one filter with another and should not be considered to be an actual consumption figure.

Breathe more easily with our help

It’s thought more than 5.5 million people worldwide die prematurely every year because of air pollution.

The effects of particulate matter (PM) on human health have been extensively studied.

The experts all agree that fine dust can be a serious health hazard, contributing to and, in some cases, even causing respiratory and cardiovascular diseases.

Smallest particles

A much less known fact is that research indicates that these smallest particles in the air are the most dangerous.

To provide a healthy and productive indoor air environment, this means that the focus should be put on filtering particles that are 1μm (micrometre) or smaller in diameter – particles also known as PM1 (Particulate Matter 1).

The human body has no protection against these very small particles.

Serious conditions

They enter our bodies through the respiratory system – we inhale them – and a significant number go deep into our lungs and continue into our blood stream.

It’s these PM1 particles that contribute to many serious conditions including heart attacks and lung cancer.


So where do these particles come from? The main culprits are the emission of small particles (1μm (micrometre) or smaller in diameter – particles also known as PM1 (Particulate Matter 1)) from power plants, factories, vehicle exhausts and from the burning of coal and wood.

The average person breathes in about 18,000 litres of air per day. Each litre contains some 70,000 visible and invisible particles.

That’s over a billion particles per day that our lungs must filter out.

In fact, the average home collects about 1lb of dust per week! A 3m x 3m carpet or rug will collect an average of about 4.5kgs of dust per year. Every day we eat 1kg of food, drink 2kg of fluid and breathe 25kg of air.

25 million particles

We can only see with human eyes 10% of what’s in our indoor air.

Indoor air is up to 50 times more polluted than outdoor air. We spend approximately 90% of our life indoors and every breath contains approximately 25million particles.

How to get help

To find out if your air filters are working well, book in for a FREE Energy Filter Audit from us. Contact our Service Division. You can also purchase our energy rated products online via our e-store.

Why choose us?

You may have just realised you need filters; you may have had them for years and be looking for a new supplier or to change up your system to ensure you are following best practice.
Whatever you need, we can help.

The highlights
• As one of the UK’s largest filter manufacturers, we provide a complete range of air and water filters, as well as systems.
• Our size and expertise enable us to provide you with an all-in-one package including reduced filter costs, contamination prevention, improved indoor air quality (IAQ) and enhanced serviced system life cycles.
• We are committed to continuous environmental improvement. Our objective is to progressively introduce measures that optimise energy efficiency and prevent pollution. Thus reducing the environmental impact of the industries we serve.

Why we excel
• Our in-house expertise puts us at the forefront of innovation.
• As the only filter company with a UK based ISO16890 test laboratory, we can manufacture and supply filter products that meet International Organisation for Standardisation (ISO) and European (Eurovent) requirements.
• We provide a UK-wide ‘one-stop-shop’ for filters and installation meeting all your commercial air hygiene and water treatment needs.
• We provide air filters, clean ductwork, monitor indoor air quality and validate Clean Rooms.
• We manage water hygiene systems by monitoring, cleaning and refurbishing commercial systems.
• We have a proven track record in providing a fast turnaround, from order to delivery, including European-wide filter supply.
• We also provide a rapid and effective customer care and advice service.

Delivering clean air where it matters
We aim to provide our customers with ‘peace of mind’. We help them comply with all the statutory regulations required to protect the environment, care for the health and safety of their employees and customers/clients/patients, and the communities where they are based.

Our accreditation
Our working practices are validated by all the relevant industry bodies and we’ve quality standards and accreditation in place. These bodies include:
• International Organisation for Standardisation (ISO)
• European (Eurovent)

FREE Energy Filter Audit
Get in touch today to book a free energy filter audit to see how we can help you save money and so you can also get to know us, our team and services. This is a free service with no obligation to buy from us. Call us to book in or to find out more on 01278 452277 or email This email address is being protected from spambots. You need JavaScript enabled to view it..

Buy direct from us
All our energy rated products are available online for you to buy direct from us via our e-store.