Ensure cleaner air and a refreshing night’s sleep for all the family with the Silentnight Airmax 800 Air Purifier with a true 4-stage HEPA filter. The HEPA filter removes 99.9% of dust, smoke, pollen, and allergen airborne particles from the room. Featuring an innovative whisper-quiet sleep mode and an aromatherapy pad, so you can enjoy a peaceful and relaxing night's sleep. Silentnight is the UK’s most trusted sleep brand with over 75 years of experience in creating products that offer solutions for every sleeper.