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header-product Philips PureProtect Water 3400 Series replacement filter compatible with AC3420 and AC3421 air purifiers
23.49 €

Philips PureProtect Water 3400 Series replacement filter compatible with AC3420 and AC3421 air purifiers

Philips PureProtect 3400 Series Filter FY3401/00 Photo 1
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Philips PureProtect Water 3400 Series replacement filter compatible with AC3420 and AC3421 air purifiers

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Philips PureProtect Water 3400 Series replacement filter compatible with AC3420 and AC3421 air purifiers

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Short description

Philips PureProtect Water 3400 Series replacement filter, model FY3401/00, designed specifically for Philips AC3420 and AC3421 air purification devices. This essential maintenance accessory ensures optimal indoor air quality by effectively capturing airborne pollutants. Perfect for routine household upkeep, the single-pack filter guarantees seamless compatibility and reliable long-term performance for your purification system.
Available at price 23.49 €: 50 pcs.
Total available for order: 70 pcs.
Warranty: 2 Years
SKU: 11260823
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
06.10.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
09.10.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.25 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
09.10.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
payment
Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
Together cheaper
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Product information

Description

The Philips PureProtect Water 3400 Series replacement filter, model FY3401/00, is designed specifically for Philips AC3420 and AC3421 air purification devices. This essential maintenance accessory ensures optimal indoor air quality and consistent humidification performance by utilizing advanced NanoCloud technology. Supplied as a single-pack filter, it guarantees seamless compatibility, hygienic operation, and reliable long-term performance for your household air purification system.

Advantages

This original replacement filter ensures a perfect fit for your device, maintaining consistently high performance and reliable operation over time. Utilizing advanced NanoCloud technology, it emits nano-sized molecules of pure water vapour to humidify the air effectively while releasing up to 99.9% less bacteria compared to standard ultrasonic humidifiers. The inclusion of smart connectivity allows you to monitor filter status conveniently through the dedicated mobile application, ensuring timely maintenance and effortless upkeep of your indoor environment.

Suitable for

  • Routine household maintenance of Philips air purifiers
  • Maintaining optimal indoor humidity in living rooms and bedrooms
  • Ensuring hygienic air humidification with reduced bacterial spread
  • Users seeking original replacement parts for specific air purifier models

This replacement filter may not be suitable for use with air purification devices from other brands or different series that are not officially compatible. It is also not intended for filtration purposes unrelated to humidification or for devices that do not support the specified series.

Key specifications

  • Compatible with Philips AC3420 and AC3421 air purifiers
  • Utilizes NanoCloud technology for hygienic humidification
  • Package dimensions: 206 mm width, 141 mm depth, 206 mm height
  • Quantity per pack: 1 piece
  • Up to 6 months of usage duration

To install the replacement filter, first turn off and unplug your compatible air purifier. Open the device compartment according to the manufacturer instructions, remove the used filter, and insert the new original replacement filter securely into place, ensuring proper alignment with the housing before closing the unit.

What to consider before purchase

  • Verify that your air purifier model is either AC3420 or AC3421
  • Check the packaging dimensions to ensure proper storage space if buying in advance
  • Review the expected usage duration to plan future replacements
Regularly monitor your filter status using the dedicated application and replace the component every six months to maintain optimal performance and hygienic air quality in your living space.
All features
Package weight: Weight of the packaged product.
250 g
Compatibility: The other products, software and hardware this product can be used with.
AC3420, AC3421
Package depth: The distance from the front to the back of the packaging.
141 mm
Package height: The distance from the top to the bottom of the packaging.
206 mm
Package width: The distance from one side of the packaging to the other.
206 mm
Quantity per pack:
1 pc(s)
Dangerous goods:
No

Description

Machine translation. Load original

Reasons to buy

Compatible with PureProtect Water, 3400 series

Replacement humidification filter designed specifically for the Philips PureProtect 3400 Series 2-in-1 air purifier and humidifier, including models AC3420 and AC3421. Easily locate your purifier model on the bottom of the device for guaranteed compatibility and seamless maintenance.

Compatible with PureProtect Water, 3400 series

Up to 6 months of usage

Enjoy long-lasting reliability and consistent protection. This high-quality humidification filter guarantees optimal performance and filtration for up to 6 months of continuous use.

Up to 6 months of usage

Original Philips filter for the best performance

Engineered by Philips for a flawless fit with your device. Always choose a genuine replacement filter to ensure maximum efficiency and the highest standard of air purification.

Original Philips filter for the best performance

Hygienic humidification with NanoCloud technology

Experience advanced NanoCloud technology that emits an ultra-fine, invisible mist. It humidifies your indoor air while releasing up to 99.9% fewer bacteria compared to standard ultrasonic humidifiers, making it completely safe to use with regular tap water.

Hygienic humidification with NanoCloud technology

Connect with the Air+ app for added convenience

Manage your indoor environment effortlessly. Link your purification device to the Air+ app to monitor filter status and conveniently order replacements whenever needed.

Connect with the Air+ app for added convenience

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Stock data
Warehouse Stock Delivery to the store Store Price
WH349 50 06.10.2026
23.49 € Best price
WH112 20 28.09.2026 Best delivery
24.49 €
23.49 €
Stock: 50
Delivery Date: 06.10.2026
Warehouse: WH349
24.49 €
Stock: 20
Delivery Date: 28.09.2026 Best delivery
Warehouse: WH112

Customer reviews

Customer questions

FAQ

How much does the Philips PureProtect 3400 Series Filter FY3401/00 cost, and is it available for purchase?

The price is 23.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 70 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.10.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Philips products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Philips service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

Where can I download the instructions for Philips PureProtect 3400 Series Filter FY3401/00?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.