Air purifiers / Winix

Winix AM90

A Wi-Fi purifier with gas-responsive automatic mode and a sleep setting that dims the indicator and slows the fan.

Sources checked: United States, Australia, United Kingdom, Canada
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Winix AM90Manufacturer lifestyle photograph

Photo: Winix

Model and local version

AM90

Regional versions and model notes
  • United States: support information available; local listing unconfirmed
  • Australia: exact local listing unconfirmed
  • United Kingdom: exact local listing unconfirmed
  • Canada: exact local listing unconfirmed
  • US manual specifies 120 V, 60 Hz.
  • Keep 12–18 inches from walls for airflow.
  • Carbon filters are not washable; the manual gives three months for carbon and roughly twelve months for HEPA, varying with use.

What it can do

Features and the setup they need.

Features, setup and recorded confirmation
Feature & setupConfirmation & sources

Control and monitor through Winix Smart

Device feature

Wi-Fi allows remote control and monitoring in the Winix Smart app.

✓ Confirmed

Winix · 2026-10-26

Adjust speed with the gas sensor

Device feature

The gas sensor changes fan speed in Auto mode; it is not a numerical PM2.5 sensor.

✓ Confirmed

Winix · 2026-10-26

Dim the light and slow down for sleep

Device feature

The light sensor can trigger Sleep mode; the air-quality LED then turns off.

✓ Confirmed

Winix · 2026-10-26

Switch PlasmaWave off

Device feature

PlasmaWave can be disabled with its button and is off by default in Sleep mode.

✓ Confirmed

Winix · 2026-10-26

Use the documented room-size rating

Device feature

Manual specifies a verified 360 sq ft room size.

✓ Confirmed

Winix · 2026-10-26

What that means at home

Our reading of the specifications.

What to allow for

US manual specifies 120 V, 60 Hz.

Living with it

Keep 12–18 inches from walls for airflow.

Model and source notes
  • US manual specifies 120 V, 60 Hz.
  • Keep 12–18 inches from walls for airflow.
  • Carbon filters are not washable; the manual gives three months for carbon and roughly twelve months for HEPA, varying with use.

Where we checked

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