
PuroAir 400
The review
The PuroAir 400 is CARB certified — confirmed in California's official Air Resources Board records — which means it has been independently verified not to produce harmful ozone, a real concern for homes with pets and children. PuroAir also states that performance is based on independent testing in an ISO 17025 certified lab, giving you confidence that the filtration figures are backed by a recognised testing standard. The listing states it cleans rooms up to 2,000 sq ft in one hour, and its three-layer system — pre-filter, HEPA filter and activated carbon — is rated to tackle pet dander, hair, odours and smoke. The built-in PuroIQ sensor auto-mode adjusts the fan speed to match real-time air quality, so it works hardest when your pets are most active.
- CARB certified — verified ozone-safe in California's official records
- Independently tested in an ISO 17025 certified lab, per PuroAir
- Cleans rooms up to 2,000 sq ft in one hour (brand-rated)
- Three-layer filtration with activated carbon targets pet odours
Good to know: For a smaller room or a Wi-Fi-connected smart home, the approved #2 PuroAir 130i covers up to 750 sq ft with app 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.



