Windmill Windmill Air Purifier (975 sq ft model) vs Winix 5530
Windmill Windmill Air Purifier (975 sq ft model)
The short answer
Winix 5530 comes out ahead overall with 7.6/10 against 6.8/10 for the Windmill Windmill Air Purifier (975 sq ft model). Windmill Windmill Air Purifier (975 sq ft model) is stronger on sleep-friendly features and indoor-air safety & materials. Winix 5530 is stronger on cleaning performance for bedroom size, running cost & ownership and value. At current verified prices, the Windmill Windmill Air Purifier (975 sq ft model) costs about $20.99 less.
- Choose the Windmill Windmill Air Purifier (975 sq ft model) if: Sleepers who want built-in white noise and a minimalist design for a small bedroom.
- Choose the Winix 5530 if: Sleepers dealing with cooking, smoke or pet odors who want a carbon-pellet filter for under $180.
Scores by criterion
| Criterion | Windmill Windmill Air Purifier (975 sq ft model) | Winix 5530 |
|---|---|---|
| Noise at sleep-usable speeds | 7.5Tom's Guide: 38.4 dBA on low. | 7.4RTINGS (search snippet only): 32.4 dBA on low; quiet-speed airflow not confirmed on an opened page. |
| Cleaning performance for bedroom size | 5.0130 cfm, 202 sq ft. | 7.0253 cfm CADR is reached only at about 60.7 dBA; about 122 cfm under 45 dBA per an unopened RTINGS summary. |
| Sleep-friendly features | 8.8Whisper mode with lights off, White Noise mode, app. | 7.6Sleep and auto modes plus app control. |
| Indoor-air safety & materials | 8.0No ionizer; AHAM Verifide, CARB, Energy Star listed. | 7.2Switchable, CARB-certified PlasmaWave; it may re-enable after a power loss. |
| Running cost & ownership | 5.0Proprietary 6-month filters. | 8.0Filter Q is widely stocked; 65 W max. |
| Value | 6.0$189 from a third-party seller on Amazon. | 8.5$179.99 sold by Amazon. |
Specifications
| Spec | Windmill Windmill Air Purifier (975 sq ft model) | Winix 5530 |
|---|---|---|
| Workflow type | — | Standard Room |
| Lowest-speed noise (manufacturer) | 16 dB | 23.5 dB |
| Top-speed noise (manufacturer) | 52 dB | — |
| Lowest-speed noise (independent measurement) | 38.4 dBA | 32.4 dBA |
| CADR (smoke where given, else headline) | 130 cfm | 253 cfm |
| Recommended room size (4.8–5 ACH / AHAM) | 202 sq ft | 392 sq ft |
| Max power draw | — | 65 W |
| Sleep / night mode | Yes | — |
| App control | Yes | Yes |
| Ionizer / electrostatic stage | None mentioned | PlasmaWave ionization, switchable |
| Filter type | 3-in-1 H13 HEPA with activated carbon layer (proprietary) | Washable pre-filter + activated carbon pellets + True HEPA (Filter Q 1712-0123-00) |
| Main filter life | 6 months | — |
Windmill Windmill Air Purifier (975 sq ft model)
Pros
- White Noise mode
- Lights-off Whisper mode
- Minimalist design
- App control
- Multiple certifications listed
Cons
- Modest 130 cfm CADR
- Filters every six months
- Among the costliest to own
- Amazon offer is third-party
A design and sleep-sound pick, not a performance pick. Buy it for the look and the white noise.
Full Windmill Windmill Air Purifier (975 sq ft model) review →Winix 5530
Pros
- Carbon-pellet filter for odors
- Switchable, CARB-certified ionizer
- App control
- Lower price
- Large coverage rating
Cons
- Loud at max, about 60.7 dBA
- Quiet-speed airflow less established
- Ionizer may re-enable after power loss on earlier models
A good choice when odors are the main problem, and a reasonable bedroom unit overall, provided you leave the ionizer off.
Full Winix 5530 review →Both products are part of our guide The Best Quiet Air Purifiers for Bedrooms of 2026, where you can see every pick, how we score and current prices from each retailer.