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The Philips PureProtect Water 3400 Series Humidification Replacement Filter keeps your compatible 2-in-1 air purifier and humidifier running at its best, ensuring consistently clean and comfortable air in your home.
Designed exclusively for the Philips PureProtect 3400 Series, this genuine replacement filter uses innovative NanoCloud technology to emit an ultra-fine mist invisible to the naked eye — humidifying your air with up to 99.9% fewer bacteria released compared to standard ultrasonic humidifiers. Safe to use with tap water.
(1) Vs. standard ultrasonic humidifiers without additional technology to reduce the spread of bacteria, as tested by an independent lab.
(2) Filter lifetime may vary depending on usage and environmental conditions.
Replacement humidification filter for Philips PureProtect 3400 Series 2-in-1 air purifier and humidifier: AC3420 and AC3421. You can find your air purifier model on the bottom of the device.
This humidification filter provides consistent protection and guarantees optimal filtration for up to 6 months. (2)
The original Philips filter is designed for a perfect fit with your device. For optimal performance, always use the genuine Philips filter.
NanoCloud emits an ultra-fine mist that is invisible to the naked eye. It humidifies air with up to 99.9% fewer bacteria released than standard ultrasonic humidifiers, safe to use with tap water. (1)
Connect your device to the Air+ app and easily order replacement filters when needed.
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Philips PureProtect Water 3400 Series 2-in-1 Air Purifier & Humidifier (AC3420)
Combat pollutants and dry air with this intelligent 2-in-1 device, keeping indoor air clean, safe, and at your preferred humidity.
Philips PureProtect Water 3400 Series 2-in-1 Air Purifier & Humidifier (AC3421)
The AC3421 variant of the PureProtect 3400 Series — ideal for those seeking quiet, intelligent air purification and hygienic humidification in one device.
Philips is a leading health technology company focused on improving people's health and enabling better outcomes across the health continuum from healthy living and prevention.
Philips leverages advanced technology and deep clinical and consumer insights to deliver integrated solutions. The company is a leader in diagnostic imaging, image-guided therapy, patient monitoring, and health informatics, as well as in consumer health and home care.
| Type | Replacement Filter |
|---|---|
| Model Compatibility | AC3420 and AC3421 |
| Filter Replacement Frequency | Up to 6 months when used 24 hours a day |
| Manufacturer | Philips |
| Category | Air Quality |
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3 | 2% | |
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1 | 2% |
Easy Peasy - filter arrived on time.
I purchased the Wireless Bluetooth Headband. Frustrating from first use fiddling around with the control panel and the cabled buds inside the band. After just a few uses the control unit wouldn't charge as advertised (inside the band). Troubleshooting suggested removing from the band, did this but still would not charge. Contacted sleep solutions, sent them a short video of the charging error lights. Despite the product being less than 2 months old they sent me a pre-paid consignment note, to send the control panel & charging pad back to them - I was instructed to include a detailed explanation of the problem and of course my contact details. They would investigate and come back to me. I was also to ensure the product was packaged in a manner to prevent damage. What they should have done, given the age of the product is apologise and sent me a replacement. Unit is useless, I'll throw it out.
Quick delivery and great communication. Sound machine works perfectly for my daughters room
Bought online, after 9 days of having no notice about shipping I emailed them and only then they sent the package. It's been two weeks and I still haven't been delivered.
Easy to order quick delivery and very happy with product.
Item deliverd fast
Excellent product, excellent customer service and very fast delivery. I will say, however, that I find the headhand too hot at the moment. This can't really be helped. But if you tend to run hot or get hot flushes, consider this.
We couldn't believe how fast the electric blankets got here from Sydney. Just 3 days by Australia post to Toowoomba. The products have all the features we wanted as well.