Air purifiers / Philips

Philips PureProtect Water 3400 Series AC3420/10

A connected purifier and evaporative humidifier that can address particles and dry air in one unit.

Listed in United Kingdom
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Philips PureProtect Water 3400 Series AC3420/10

Photo: Philips

Model and local version

AC3420/10

Regional versions and model notes
  • United States: exact local listing unconfirmed
  • Australia: exact local listing unconfirmed
  • Listed in United Kingdom
  • Canada: exact local listing unconfirmed
  • Connected use needs the Air+ app and 2.4 GHz Wi-Fi.
  • Humidifying requires filling and maintaining the tank and humidification filter.
  • Purification and humidification filters are separate consumables (FY3400 and FY3401).

What it can do

Features and the setup they need.

Features, setup and recorded confirmation
Feature & setupConfirmation & sources

Purify and humidify the room

Device feature

Combines HEPA, active carbon and a pre-filter with evaporative humidification.

✓ Confirmed

Philips · 2026-10-26

Schedule cleaning and use voice controls

Device feature

The Air+ app supports remote control and scheduling; Google and Alexa voice control are listed.

What you’ll need

  • Connect to 2.4 GHz Wi-Fi.
✓ Confirmed

Philips · 2026-10-26

See particles, temperature and humidity

Device feature

Sensors measure PM2.5, temperature and humidity.

✓ Confirmed

Philips · 2026-10-26

Use the tank and empty-water alert

Device feature

Includes a 3.2 L tank with an empty-water alert; rated humidification output is up to 650 mL/h.

✓ Confirmed

Philips · 2026-10-26

Compare cleaning output and coverage

Device feature

Particle CADR is 300 m³/h; maximum advertised area is 78 m² under the stated test method.

✓ Confirmed

Philips · 2026-10-26

What that means at home

Our reading of the specifications.

What to allow for

Connected use needs the Air+ app and 2.4 GHz Wi-Fi.

Living with it

Humidifying requires filling and maintaining the tank and humidification filter.

Model and source notes
  • Connected use needs the Air+ app and 2.4 GHz Wi-Fi.
  • Humidifying requires filling and maintaining the tank and humidification filter.
  • Purification and humidification filters are separate consumables (FY3400 and FY3401).

Where we checked

Features are based on the linked manufacturer documentation. Household results also check the equipment and software you select. How we check.