This Dimplex air purifier has been designed to improve the quality of air indoors, reducing the presence of polluting agents such as dust, cigarette smoke, unpleasant odours, spores, bacteria, pollen, dust mite residues, pet dander etc. Air goes through an active carbon filter which helps to eliminate odours such as cigarette smoke. The air is then passed through a Hepa filter, able to retain 99.97 per cent of polluting particles with a microscopic size of 0.3 m upwards; such as pollen, dust mites, mould spores and pet dander. Viro3 enviro-neutralising technology, attacks and neutralises the harmful impurities. The negative ions produced by the Viro3 technology, are like those which can be found in large quantities in uncontaminated areas in nature, near waterfalls, beaches and in the mountains.