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Key Features
- Compatible with PureProtect Water, 3400 series
- Long lasting filter for up to 1 year
- Original Philips filter for the best performance
- 3-layer HEPA filtration traps 99.97% of smallest particles
- Follow the smart filter status indicator on your device
Philips PureProtect Water 3400 Series HEPA NanoProtect filter, FY3400/30

Genuine replacement filter for your 2-in-1 air purifier and humidifier: 3-in-1 HEPA NanoProtect, Active Carbon and pre-filter for protection against pollution, pollen, dust, pet dander and viruses.
Key Features:
Compatible with PureProtect Water, 3400 series
Replacement filter for Philips PureProtect 3400 Series, 2-in-1 air purifier and humidifier: AC3420, AC3421. You can find your air purifier model on the bottom of the device.
Original Philips filter for the best performance
The original Philips filter is designed for a perfect fit with your device. For optimal performance, always use a genuine Philips filter.
Long-lasting filter for up to 1 year
The filters ensure optimal filtration performance for up to 1 year (2), reducing hassle and cost. To enhance filtration, vacuum the pre-filter regularly.
Follow the smart filter status indicator on your device
The indicator on the display of your Philips device notifies you when you need to replace the filter. Maintenance is effortless, taking less than a minute.
Connect with the Air+ app for added convenience
Connect your device to the Air+ app to monitor your filter status and easily order replacements when needed.
Specifications
Global
- EAN: 8720389040863
- Model Number: FY3400/30
Compatibility
- Compatible Model: For Philips air purifier(s):AC3420, AC3421
In The Box & Warranty
- Included: 1x filter
- Warranty (Years): 1
Manuals
Why Buy?
Keep Your Air Purifier Working at Its Best
If you've invested in a Philips PureProtect Water or 3400 Series air purifier, this replacement filter is what keeps it doing its job properly — trapping the tiny particles that affect your home's air quality day in, day out.
Over time, filters lose their effectiveness, and without a fresh one in place, your purifier is essentially just moving air around rather than cleaning it. This genuine Philips filter restores full performance, capturing 99.97% of the smallest airborne particles — things like dust, pollen, pet dander, and fine pollutants that you can't see but can definitely feel, especially if anyone in your home has allergies or sensitivities. And with up to a year of life per filter, you're not constantly thinking about replacements.
Because it's a genuine Philips part, it fits perfectly and works exactly as your purifier was designed to operate. Your device's smart filter indicator will let you know when it's time to swap it out, so there's no guesswork involved — just a simple, straightforward maintenance step that keeps your home air genuinely clean.
Buy This If…
- You own a Philips PureProtect Water or 3400 Series air purifier
- Someone in your home suffers from allergies, asthma, or dust sensitivity
- You want reliable, consistent air quality without the fuss
- You prefer genuine parts over generic alternatives for peace of mind
- Your current filter is approaching or past the 12-month mark




