What does the three-stage filter remove?

A fabric pre-filter catches hair and large dust, a carbon layer handles TVOCs, formaldehyde and odors, and the True HEPA core is rated to capture 99.97% of allergens, dust, pollen, smoke, pet dander and mold spores.

Is this purifier enough for a bedroom or living room?

No. Its CADR is 6 m³/h, which is tiny next to room purifiers. It works best in a car, RV, tent or on a desk, not as a whole-room unit.

How often should the filter be replaced?

The listing pairs one filter with about a year of use, but in smoky or pet-heavy spaces the carbon and pre-filter load up faster. Check the pleats monthly and replace when they darken or odor returns.

How does auto mode work?

The unit runs high speed with a red light, medium with yellow and low with blue, and auto mode shifts between them. There is no separate air-quality sensor spec, so treat the light as a speed indicator.

What comes in the box?

The set includes the cylindrical True HEPA filter and the black air purifier with vented top, power button and perforated intake. A power adapter is not listed.

Does it help with smoke and formaldehyde?

The carbon stage and oxygen anion feature target formaldehyde, smoke and odors. Expect modest help in a small enclosed space; it will not clear a smoky room quickly at this airflow.

Where is the True HEPA Replacement Air Filter cheapest?

At Deal.ai, for $20.99, as of our latest check.

Free shipping on everything10% off your first orderNo account needed · Buy 2, save 10% · 3+, save 15%

True HEPA Replacement Air Filter

Sold and shipped by Deal.ai

$20.99Free shipping

Buy 2, save 10% · 3+, save 15%

Extra 10% off your first order

Specification: W13588715

Arrives about Nov 17–26, from a US warehouse

30-day full refund: if you're not happy with it for any reason, or it never arrives, tell us within 30 days and we refund you in full. Shipping and refunds