Winix C545

Quick verdict

Budget 4-stage True HEPA + PlasmaWave purifier with a built-in air-quality LED and a maintained community HA integration for speed and mode control. Not local; included as a low-cost cloud filler because it has an actively maintained HA integration unlike most cheap purifiers. It leans on the manufacturer cloud, so it's here mainly as a fallback when local options run short.

Standout: Budget 4-stage True HEPA + PlasmaWave purifier with a built-in air-quality LED and a maintained community HA integration for speed and mode control.

Last checked: 2026-06-02

Compatibility snapshot

Why it stands out

• Inexpensive and AHAM-rated for rooms up to 360 sq ft
• Maintained community integration exposes fan speed, mode and AQI
• Real-time auto mode with onboard particulate sensor

Reasons to hesitate

• Cloud-only: integration authenticates against Winix's cloud
• PlasmaWave ionizer that some users disable
• No Matter or Thread

Best for

• Budget-conscious buyers wanting smart purification with HA visibility
• Small-to-medium bedrooms

Avoid if

• you want fully local control with no cloud account

Privacy and local-control notes

Not local; included as a low-cost cloud filler because it has an actively maintained HA integration unlike most cheap purifiers. This one depends on the Winix cloud, making it the least private pick in its category.

Home Assistant support: supported · integration path: iprak/winix (HACS).

Buying reality check

Price notes: Around $130. Among the more affordable options in this category.

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