Referring to a particular type of air filter, HEPA stands for high efficiency particulate arrestance. It is a standard applied to air filters, which can be used in a variety of settings, including domestic, commercial and industrial spaces. To be HEPA certified, air filters must eliminate at least 99.97% of particles in the air that measure 0.3 micrometres (µm) or more.

At Städa, we are proud to offer a comprehensive range of HEPA-certified products which include air filtration systems and equipment, as well as vacuum cleaners.’

Some products have the label HEPA-like or claim to work similarly to HEPA filters; you should be wary of these as these are not as effective or efficient as official HEPA-certified cleaning products.

How It Works

HEPA filters are made up from a series of fibreglass fibres arranged in random order. These fibres are typically 0.5 – 2µm in diameter. The filter is specifically designed to separate and eliminate these miniscule particles; examples of this include dust mites, pollen, allergens, and even mould!

It is important to note that despite filtering out particles very effectively, HEPA filters do not remove gasses or molecules that cause unpleasant odours; these require a separate activated carbon filter in addition to the HEPA filter.

HEPA filters are at their most useful when considering enclosed spaces as air is constantly recycled and recirculated. If there is no influx of fresh air, particles will continue to float in the air, increasing the risk of ingestion with each circulation.

Benefits of HEPA

There are many fields in which HEPA filters are used today. Examples include aircrafts utilising HEPA filters to improve the quality of air. Due to the large number of individuals present in an enclosed space for long periods of time, the filter helps to improve the quality of the working space as well as comfort levels for customers.

On a domestic level, the effective filtration of particles from the air is most likely to benefit individuals suffering from asthma or allergies. As the air quality is much improved, this also means that these particles will not end up in the lungs where it can have serious health implications in the long run.