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Key Features
- Thorough cleaning of rooms up to 78 m2
- 3-layer HEPA filtration traps 99.97% of smallest particles
- Automatic humidification of up to 650 ml/h
- Hygienic humidification with NanoCloud technology
- Effectively reduces viruses like H1N1 (flu) from the air
Philips PureProtect Water 3400 Series Smart 2-in-1 Air Purifier and Humidifier - White, AC3420/10

The Philips PureProtect Water 3400 Series Smart 2-in-1 Air Purifier and Humidifier (AC3420/10) is a versatile appliance designed to enhance indoor air quality by combining advanced air purification with efficient humidification.
Key Features:
3-layer HEPA filtration
3-layer filtration made of pre-filter, HEPA NanoProtect and Active Carbon captures 99.97% of particles as small as 0.003 microns 3– smaller than the smallest known virus!
Humidification rate 650ml/h
Combat dry air symptoms such as dry skin, chapped lips, irritated nose or throat, with rapid humidification up to 650 ml/h 4. The humidity is detected and automatically adjusted to your desired setting.
NanoCloud technology
No technology releases cleaner water vapor than NanoCloud. Its ultra-fine mist is invisible to the naked eye and extremely difficult for bacteria or residue to adhere to. Humidify air with up to 99,9% fewer bacteria released than standard ultrasonic humidifiers, safe to use with tap water. 5
1 CADR tested according GB/T18801-2022. Suitable purification area calculated to NRCC-54013 standard.
2 Calculated: 48m3 room, CADR of 300m3/h
3 From the air that passes through the filter, tested to DIN71460 with NaCl aerosol 0.003um and 0.3um, iUTA
4 Tested by CVC according to GB/T 23332-2018. Initial temperature of 23±2°C and relative humidity of 30±2% RH
5 Vs. standard ultrasonic humidifiers without additional technology to reduce the spread of bacteria, as tested by an independent lab
6 Microbial Reduction Rate Test by Airmid Healthgroup Ltd. with influenza (H1N1) in 28.5m3 test chamber, using turbo mode for 30-40min
7 Tested to GB21551.3-2010 with S. Albus, 30m3 chamber, 1h, Turbo mode, 3rd party lab
8 Microbial Reduction Rate Test by Antimikrop with SARS-CoV-2 in 30m3 test chamber, using turbo mode for 1h.
Specifications
Global
- EAN: 8720389040702
- Model Number: AC3420/10
General
- Colour: White
Features
- App-Control: Yes
- Remote Control: Yes
- Timer: Yes
- Voice Control: No
Size
- Effective Area: 78 m2
Design
- Fan Speed: 5
- Water Tank Capacity: 3.2
Performance
- CADR (m³/h): 300
Safety Features
- Auto Shutoff: Yes
Energy Specification/Power
- Noise Level (dBa): 51
- Power (W): 43watts
Electrical Requirements
- Cord Length: 1.8m
Dimensions
- Depth: 285mm
- Height: 520mm
- Width: 285mm
Weight
- Weight (Kg): 6.5
In The Box & Warranty
- Warranty (Years): 2
Manuals
Why Buy?
Clean, moisturised air for bigger living spaces
The Philips 3400 Series 2-in-1 air purifier and humidifier tackles two common home comfort problems at once, clearing airborne dust, pollen and pet dander while adding moisture back into dry indoor air. It covers rooms up to 78 square metres and can freshen a 20 square metre room in under 10 minutes, so it copes easily with open-plan living areas or larger bedrooms.
Inside, a 3-layer HEPA filter captures 99.97 percent of particles as small as 0.003 microns, including 99.9 percent of airborne viruses and bacteria, so you are breathing noticeably cleaner air rather than just moved-around dust. The humidifying side uses Philips NanoCloud technology, releasing a fine, invisible vapour at up to 650ml per hour that is safe to run straight from the tap, without the bacteria spread you get from standard ultrasonic humidifiers. That means less scratchy throat, tighter skin or stuffy nose from dry indoor air, especially over winter.
Finished in white with a slim 285mm by 285mm footprint, it fits neatly into a living room or bedroom corner, and smart connectivity lets you check air quality and adjust settings from your phone rather than getting up. At 43W, it is easy to leave running day to day.
Buy this if…
- You want a Philips 3400 Series 2-in-1 air purifier and humidifier that handles a large room properly
- Your household includes allergy, asthma or hay fever sufferers
- Your home gets dry and uncomfortable, particularly in winter
- You would rather run one appliance than a separate purifier and humidifier
- You like checking and adjusting home appliances from your phone

























