1. | Philips Air Cleaner AC4004/00 User Guide Philips Clean air system 30 m 2 4 step filtration system AC4004 A Healthier Sleep Always with unique Sleep Mode Get your better night s sleep with the Philips Air Purifier Its unique Sleep Mode with dimmed indicators quietly cleans the air of bacteria and allergens The HealthyAirProtect Alert and Lock assures you of healthy air always Healthy Air With professio |