
PuroAir 400
The review
The PuroAir 400 is CARB certified — California's strict air-cleaner standard, confirmed in the official CARB registry — meaning it meets independently verified emission and performance requirements. PuroAir says performance is based on independent testing in an ISO 17025 certified lab, giving you an extra layer of confidence in the figures. Its three-layer filtration system combines a pre-filter, HEPA filter, and CarbonTech™ activated carbon layer to tackle smoke, VOCs, pet dander, and odors, and the PuroIQ sensor automatically adjusts fan speed to match real-time air quality.
- CARB certified — confirmed in the official CARB registry
- Independently tested in an ISO 17025 certified lab, per PuroAir
- Three-layer filtration: pre-filter, HEPA, and activated carbon for smoke and VOCs
- PuroIQ auto-mode sensor adjusts to your air quality in real time
Good to know: For a smaller room or a smart app-connected option, the #2 PuroAir 130i covers up to 750 sq ft and adds Wi-Fi control.
Its certifications and quality standards
- Ozone-safe: CARB certified
Ozone irritates lungs. A CARB-certified purifier is safe to run all day in bedrooms and nurseries, and around children, pets and asthma.
See the official record
CARB list: PuroAir, Air Purifier, model PA400, Mechanical, certified 2023-02-10, ref G-23-044. The listing's part number is PA400.
ww2.arb.ca.gov ↗ - Independently tested: Third-party lab tested · stated by PuroAir
An extra layer of quality control: someone other than the maker checks what's inside.
Where PuroAir states it
Listing: 'Based on independent testing in an ISO 17025 certified lab';
getpuroair.com ↗ - Clean safety record
No recalls or official warnings for this product in the US CPSC's recall database ↗. Checked October 2026.



