Nowadays, our air isn’t as clean as it once was. More and more cities across the globe are becoming enveloped in smog and pollution is a problem that doesn’t seem to be going away anytime soon. Up to 45 per cent of the world’s population now suffers from some form of allergy or hypersensitivity and over 10 per cent suffer from asthma. And when you consider that we now spend more time in our cars than ever before, the need for an effective and reliable air conditioning system has never been greater. This is why Volvo developed the CleanZone philosophy.