Energy Efficiency Classification

Energy Efficiency Classification

European purchasers of air filters are finding it much easier to select the right air filter for energy efficiency and indoor air quality (IAQ), thanks to a new energy efficiency classification system introduced by Eurovent Certification*.  Filters are now graded from A to G, with “A” standing for the lowest energy consumption and “G” for the highest.

The new classification, based on EN779:2012**, gives customers a clearer understanding of a filter’s annual energy consumption, initial efficiency and minimum efficiency. To reflect this new classification system, Camfil is now changing the labels and product names of filters to include the new A to G energy rating. This information clearly points out the difference between our filters and competitor products, making it easier to select the right filter for the right application for the best energy efficiency and filtration.

This will become more and more important as EU directives require public and commercial buildings to improve their energy efficiency. Ten to 20% of all electrical power in buildings is consumed to operate heating, ventilation and air conditioning systems. In addition to reducing energy consumption and environmental impact for sustainability reasons, building owners also need to cut operating costs as power prices increase. Selecting the right quality air filters with the lowest energy consumption can boost their energy efficiency and also increase IAQ for a better and healthier work environment.

European buyers of filters should check that their supplier is Eurovent-certified. There should be Eurovent labels on all filter boxes and filters should have test protocols based on EN779:2012. 

With soaring power prices and new energy directives, it will always pays to save energy in ventilation systems by using the right air filters.

Calculation and classification

The new standard measures both filtration efficiency and pressure drop as a function of dust loading. A representative energy consumption level is calculated using the mean pressure drop difference averaged over the course of dust loading. On the basis of these figures, the energy performance of a filter over an operating period of one year is simulated in a laboratory. This representative energy value is used for a classification of air filters into energy classes.

*Eurovent Certification Company is the representative of the refrigeration, air conditioning, air handling, heating and ventilation industry in Europe. www.eurovent-certification.com 

**EN779:2012 is the new European standard for air filters.

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