Purifier reviews, built on owner data
Every review here starts with the manufacturer's own numbers and the registry entries - the wins, the honest downsides, and the filter costs nobody mentions on the box.
Comparing models side by side? The best air purifier for pets puts them in one table, sorted by registry-checked CADR.

AirDoctor AD3500: Manufacturer-Stated, Not Registry-Listed
AirDoctor AD3500 review: the CADR isn't AHAM Verifide-listed - the huge coverage claim, real filter costs, and who actually needs a purifier this large.

Blueair 211i Max: The Registry Number Is Higher Than the Box Says
Blueair Blue Pure 211i Max review: the AHAM-verified CADR beats Blueair's own number - big-room coverage, the washable fabric pre-filter, and filter costs nobody headlines.

Levoit Core 300: The CADR Number Doesn't Match the Registry
Levoit Core 300 review: the AHAM-verified CADR is 36% lower than Levoit's own number - what that means for room size, plus honest downsides and costs.

Levoit Core 300 vs. Vital 100S vs. Vital 200S: Two CADR Numbers Don't Match the Registry, One Does
Levoit Core 300 vs Vital 100S vs Vital 200S, checked against the AHAM registry: which step-up is genuinely worth paying for, and which spec-sheet numbers to trust.

Levoit Vital 100S: The CADR Number Doesn't Match the Registry
Levoit Vital 100S review: the AHAM-verified CADR is 36% lower than Levoit's own number - the quiet middle child of the lineup, true filter costs, and when to size up.

Levoit Vital 200S: The Registry Number Is Higher Than the Box Says
Levoit Vital 200S review: the AHAM-verified CADR beats Levoit's own marketing number - why the washable pre-filter is the real story for cat homes, plus honest downsides.

Levoit Vital 200S vs. Winix 5520: The Registry Number Is Higher Than the Box Says for Both
Levoit Vital 200S vs Winix 5520, both AHAM-verified above their own marketing numbers: the hair-and-dander pick versus the odor-first pick - which fits you.

PuroAir 240: Manufacturer-Stated, Not Registry-Listed
PuroAir 240 review: the CADR isn't AHAM Verifide-listed, so here's what's independently confirmed (CARB ozone status) versus manufacturer-only - plus real costs.

uahpet Air Purifier Slim: Manufacturer-Stated, Not Registry-Listed
uahpet Air Purifier Slim review: the built-in air quality monitor, and honest CADR caveats - manufacturer-stated, not AHAM Verifide-listed.

Winix 5520: The Registry Number Is Higher Than the Box Says
Winix 5520 review: the AHAM-verified CADR beats Winix's own number - AOC carbon performance, PlasmaWave questions answered, and true yearly costs.