Your home always have clean air with this Dyson air purifier. It's ideal for rooms up to 81m³, leaving that lounge as fresh as a sea breeze. Having a busy day answering emails? Auto mode adjusts the air flow to match the air quality - no need for you to lift a finger from the keyboard. It also comes with clever tech which removes 99.9% of bacteria and dust, making it more comfortable for anyone with allergies. You can even keep it running when you go to bed, because the handy Night Mode will dim the LED display to make sure you're not disturbed. Or, if you prefer it to switch off at night, the Sleep Timer will power it down at a set time.