The Philips 4000 series air purifier model AC3858/51 is designed to improve indoor air quality by removing pollutants such as dust, pollen, pet dander, smoke, mold spores, and other airborne particles from your living space up to an area of 73 square meters. With its high-efficiency particulate air (HEPA) filter, it can capture particles down to 0.3 microns in size, ensuring that even small allergens are effectively filtered out.
This device also features an active carbon (AC) filter for additional odor removal and PM2.5 sensor technology for real-time monitoring of fine particulates in the air. It supports voice control through Amazon Alexa and Google Home compatibility, making operation convenient whether you’re at home or on-the-go.
Additionally, it offers automatic mode functionality which adjusts settings based on ambient conditions, optimizing performance without user intervention. For users who prefer hands-free solutions, apps like Philips Air+ provide remote access capabilities allowing you to monitor and manage the purifier remotely via smartphone or tablet.
Notable features
- Model: Philips 4000 series AC3858/51 air purifier 73 m² 60 W Grey
- Colour: Grey
- Weight: 8 kg
- Width: 310 mm
- Depth: 310 mm
- Height: 718 mm
- Cord length: 1.8 m
- Wi-Fi: Yes






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