Philips AC4221 Smart Air Purifier for Home, Ideal for Living Room, Metallic

Brand : Philips
Series : PureProtect Pro 4200 Series
Model : AC4221/61
Product Type : Smart Wi-Fi Air Purifier for Home
Colour : Metallic Black
Particle Clean Air Delivery Rate (CADR) : 600 m³/h
Rated Room Coverage : Up to 72 m² (approximately 775 sq. ft.) under GB/T 18801-2022
Filtration System : Pre-filter, NanoProtect HEPA and activated carbon
Particle Filtration Efficiency : 99.97% at 0.003 microns in laboratory filter testing
Air Quality Sensors : PM2.5, gas, temperature and humidity
Air Quality Display : Numerical reading and colour indicator ring
Operating Modes : Auto, Sleep and Turbo
Manual Fan Speed Levels : 5
Rated Sound Level : 15 dB in Sleep Mode and 51.5 dB in Turbo Mode
Maximum Power Consumption : 54 W
Standby Power Consumption : Less than 2 W
Connectivity : Wi-Fi with Philips Air+ app for iOS and Android
Additional Features : Child lock, automatic display dimming, ambient night light and app scheduling
Compatible Replacement Filter : Philips FY4200/30
Power Cord Length : 1.8 m
Product Dimensions (H × W × D) : 52 × 28.5 × 28.5 cm
Product Weight : 6.5 kg
Warranty : 2 years, subject to Philips warranty terms

1. Is the Philips AC4221/61 suitable for a large living room?
Yes. Philips rates it for rooms up to 72 m² (approximately 775 sq. ft.) under GB/T 18801-2022. In practice, ceiling height, room layout and open doorways affect performance.

2. What does a CADR of 600 m³/h mean?
CADR stands for Clean Air Delivery Rate. The 600 m³/h rating describes how quickly the purifier delivers particle-filtered air under test conditions. It is not a measure of floor area.

3. Does it capture airborne dust, pollen and PM2.5?
Yes. The pre-filter and HEPA layer capture particles from air drawn into the unit. The purifier does not remove dust that has already settled on floors or furniture.

4. Can it help reduce cooking smells?
The activated carbon layer can help reduce certain airborne odours. For persistent cooking smells, use kitchen ventilation and address the source as well.

5. Does the display show outdoor AQI?
No. The numerical display and colour ring provide feedback from the purifier’s indoor sensors. They do not show the outdoor AQI reported for your city.

6. Can I use the purifier without Wi-Fi?
Yes. You can operate it using the controls on the unit. Wi-Fi is needed for remote control and scheduling through the Philips Air+ app.

7. How loud is it in Sleep and Turbo modes?
Philips lists a rated sound level of 15 dB in Sleep Mode and 51.5 dB in Turbo Mode. Sleep Mode is the quieter setting for overnight use.

8. Which replacement filter does it use, and when should I change it?
Use the Philips FY4200/30. Philips’ technical page recommends replacement at nine months, while its India store lists one year. Follow the unit’s filter replacement alert and manual, as filter life depends on air quality and usage.

9. Does the 99.97% rating mean it removes 99.97% of viruses from the room?
No. The figure describes particle capture in a laboratory test of air passing through the filter. It does not establish a 99.97% virus-removal rate in a room or guarantee protection from infection.

10. How much power does it use, and what is the warranty?
The purifier is rated at 54 W maximum and less than 2 W in standby. Philips lists a two-year warranty, subject to its warranty terms.