Do Air Purifiers Help With Pet dander?

Is pet dander a particle?#

Yes. Dander is shed skin and saliva proteins on microscopic flakes, particles small enough to stay airborne for a long time and settle on everything else.

It is not the fur. Fur is a carrier and a coarse nuisance; the fine dander on it is what the rating addresses.

What the rating covers#

CADR applies to the dander particle share, and the smoke column marks the fine end where dander lives. A unit with a strong tobacco-smoke CADR is the honest pick for an animal household.

The smells of the animal are a separate matter, gases with no published CADR at all.

What sizing means here#

The room minimum still governs: published rows, rounded up between rows, 8-foot ceiling. A living room between the 300 and 400 sq ft rows takes 260 cfm; a bedroom between the 100 and 200 sq ft rows takes 130 cfm.

Dander is a continuous source, so continuous running is the honest default, and filters load steadily. Hair mats the pre-filter; replacement filters are part of the animal’s keep, not an optional extra.

Limits and honest caveats#

• Grooming and bedding washing are source control; they shrink the load at its origin.
• Keep the pet out of the bedroom if nights are the worst part. The machine helps the room it is in.
• The litter tray and the damp-dog smell are gas-phase and unrated. Ventilation and a clean tray do that work.
• Run the unit continuously while the animal lives indoors; particles return when it stops.

Where the marketing overreaches#

A "pet" badge on the box decorates the same three CADR numbers every machine is tested against. Check the smoke column rather than the cartoon paw print.

"Hypoallergenic pet air" is not a published claim. The published claim is a delivery rate for a room size.