• Philips PureProtect Pro 4200 Series Smart Air Purifier Metallic Black AC4221-11

    $536
    $113 (17%) off RRP of $649
    $113 (17%) off RRP of $649

    Philips PureProtect Pro 4200 Series Smart Air Purifier Metallic Black AC4221-11

    $536
    $113 (17%) off RRP of $649
    $113 (17%) off RRP of $649
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    Colour: Black
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    • Overview
    • Specifications & manuals
    • Reviews
    • Legendary service
    • Delivery, services & returns
    • Questions & answers

    Overview

    The Philips PureProtect Pro 4200 Series Smart Air Purifier (AC4221/11) delivers best-in-class air purification with powerful, quiet, and energy-efficient performance. Featuring a robust double-fan system, it offers up to 1.5x more power than similar-sized models, cleaning large spaces up to 156 m² or a 20 m² room in under five minutes — perfect for busy households, open-plan living, or allergy-prone environments.

    Its advanced four-layer filtration system, including HEPA NanoProtect and double Active Carbon layers, captures 99.97% of ultrafine particles, allergens, viruses, and gases down to 0.003 microns, ensuring superior air quality. Certified to remove 99.99% of allergens like dust, pollen, pet dander, and mould spores, it provides reliable, all-day protection for sensitive users.

    SilentWings technology, inspired by owl flight, delivers whisper-quiet operation at just 15 dB, even at full speed, making it ideal for bedrooms and workspaces. Intelligent AeraSense sensors continuously monitor PM2.5, gas, allergen, temperature, and humidity levels, automatically adjusting the purifier’s performance for optimal air quality.

    With smart connectivity, the Philips Air+ app allows remote control, real-time air quality tracking, smart scheduling, and voice command compatibility through Google Assistant and Alexa. Designed with durability and sustainability in mind, over 30% of its materials come from recycled plastics, reinforcing Philips’ commitment to eco-conscious living.
    Double-fan Compact Power

    Innovative twin-fan design delivers 1.5x more power for rapid, thorough purification, covering rooms up to 156 m² and cleaning 20 m² in under five minutes.

    4-layer HEPA & Carbon Filtration

    Captures 99.97% of particles, allergens, viruses, and gas pollutants as small as 0.003 microns, ensuring exceptionally pure and healthy indoor air.

    SilentWings Quiet Technology

    35% quieter than previous models, using owl-inspired fan blades to operate at just 15 dB, even at maximum speed, for undisturbed comfort.

    Smart Sensors & App Control

    Equipped with PM2.5, gas, and allergen sensors, integrates with the Philips Air+ app and voice assistants for effortless, adaptive, and remote air management.

    Specifications & manuals

    key Specifications
    Brand
    Philips
    Model Number
    AC4221-11
    Height (mm)
    520 mm
    Width (mm)
    345 mm
    Depth (mm)
    345 mm
    Weight (kg)
    6.5 kg
    Finish Colour
    Black
    Finish Colour Description
    Black
    warranty
    Manufacturer Warranty
    2 Years
    Use
    Not intended or designed for commercial use.
    other Features
    Features
    • Double-fan Performance: Twin-fan system delivers 1.5x more power, achieving 600 m³/h CADR to purify large rooms up to 156 m² and clean 20 m² in less than five minutes.
    • HEPA + Carbon Filtration: Four-stage filtration removes 99.97% of ultrafine particles and over 96% of harmful gases and odours, ensuring comprehensive indoor air purification.
    • SilentWings Technology: Operates at just 15 dB, making it 35% quieter than previous models — perfect for undisturbed sleep, study, or relaxation.
    • Allergen Elimination: Removes 99.99% of allergens like pollen, pet dander, and mould spores, offering ECARF-certified relief for allergy sufferers and sensitive individuals.
    • Smart Sensing & Adaption: Built-in AeraSense technology continuously monitors air quality, automatically adjusting purification speed based on PM2.5, gas, and humidity levels.
    • Philips Air+ App Control: Offers remote control, live air quality data, and voice command compatibility via Google Assistant and Alexa for seamless smart home integration.
    • Eco-friendly & Energy Saving: Operates at just 54 W and uses over 30% recycled plastic in construction, balancing high performance with sustainable, cost-effective design.
    • Virus & Bacteria Protection: Independently tested to remove 99.9% of airborne viruses and bacteria, including H1N1 and SARS-CoV-2, for enhanced home health safety.
    • Fresh Wake-up & Bedtime Modes: Automatically increases airflow before wake-up and purifies your room before bed, enhancing comfort with clean air and a cosy night light.
    • Long-lasting Filters: Delivers up to one year of filtration per set, reducing maintenance needs while maintaining peak performance and air purity over time.
    electrical Connection
    Length of cord
    1.8 m
    country of Origin
    Origin
    China

    Reviews

    Rating snapshot

    5
    38
    4
    8
    3
    0
    2
    0
    1
    0

    Average customer rating

    Overall
    4.8
    Ease of setup
    5.0
    Build quality
    5.0
    Value of product
    5.0

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    Pros
    1-3 of 46 reviews
    Macca 602026-10-16
    Great purifier
    Love the purifier, you can’t hear it at all but as soon as you start cooking or open the outside door, it changes colour and the fan speeds up. Great when I’m sewing, with all the fibres flying around. Very happy with it. Appliances online are always great, fast postage.
    Build quality
    5.0
    Ease of use
    5.0
    Value of product
    5.0
    S at alex2026-10-11
    This is an excellent device... highly recommend
    It's quiet, compact, easy to use. We use it when there are people with colds and coughs, and also in winter when the combustion heater is on and some trace smoke enters the room. I like that it analyses the air and gives readouts on air quality.
    Build quality
    5.0
    Ease of use
    5.0
    Value of product
    5.0
    Mamta1232025-06-11
    Air purifier
    Very good and convenient to use....pleasurable experience

    Legendary service

    The Appliances Online Net Promoter Score (NPS) is based on feedback from 89,897 people, collected between August 2024 to August 2025. Learn more about the Net Promoter Score (NPS).
    I have been telling friends
    Michael, Australia
    FANTASTIC SERVICE
    Kenneth Eather, PORT MACQUARIE
    Delivery people are excellent
    Marilyn, Mackenzie, QLD

    Delivery, services & returns

    Appliances Online is all about legendary service. We offer free next business day delivery, free connection, free removal and free recycling, and we even offer Saturday delivery and, in some locations, a Premium Delivery option that allows you to choose your own 2-hour delivery window.

    Questions & answers

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