360 degree True HEPA air purifier

Winix T500 Compact True HEPA Purifier

The T500 packs four stages of filtration into a compact body sized for a bedroom or office. A True HEPA filter captures 99.99% of allergens, while smart sensing and auto mode keep it working only as hard as the air requires.
Exploded view of the Winix T500 air purifier showing its four filtration stages stacked apart
Four stages, one compact body

How the T500 cleans the air

Air enters through the 360 degree intake and passes four filters in order, each handling a different part of the problem. That layout keeps the footprint small while still moving enough air for rooms AHAM verified at 251 square feet.
First stop for hair and large dust

The fine mesh pre-filter catches hair, lint and visible dust before it reaches the more expensive stages. Cleaning it periodically keeps airflow steady and helps the HEPA filter behind it last to its full rated life.

True HEPA filtration at 99.99%

The pre-filter is followed by a True HEPA filter rated at 99.99% capture. This is the stage doing the heavy lifting against pollen, dust mite debris and the pet dander that settles into soft furnishings.

Carbon stage tackles odors too

A dedicated activated carbon filter reduces gases and odors as air passes through, so the unit handles cooking smells, pets and smoke alongside the particles, which is what many buyers overlook.

PlasmaWave plus smart sensing

PlasmaWave uses a low-voltage ionization process to help reduce air pollutants, and the smart sensor drives auto mode. WiFi through the Winix Smart App lets you check the unit from another room.

Cleaner air with less effort from you

Because the built-in sensor watches the room, the T500 steps up when cooking or dust stirs and settles again on its own, so you get steady air changes without babysitting a control panel.
Winix T500 air purifier running in a bedroom next to a bed at night with the air quality light glowing

Allergen capture you can point to

The True HEPA stage is rated at 99.99% capture, so pollen, dust and pet dander circulating in a bedroom get pulled out of the air you sleep in rather than simply moved around the room.

Winix T500 air purifier in a sunny living room with a dog resting on the floor nearby

Auto mode that reads the room

A built-in sensor tracks air quality and adjusts fan speed by itself. The indicator light shifts color as conditions change, which one owner confirmed matched what they could feel day to day.

Close view of the Winix T500 air purifier top air outlet releasing clean air in a kitchen

Odor reduction, not just particles

An activated carbon layer sits ahead of the HEPA filter to reduce cooking smells, pet odors and smoke, addressing a category of problem that particle-only units tend to leave untouched.

Winix T500 air purifier beside a crib in a softly lit nursery with dimmed indicator light

Quiet enough to run overnight

Minimum noise is listed at 25.4 dB and Sleep Mode dims the unit for nighttime. In a nursery or bedroom that means the purifier can stay on all night without becoming the loudest thing in the room.

Person carrying the compact white Winix T500 air purifier through a hallway between rooms

Compact size that moves with you

It is light enough to carry between rooms, and reviewers report using it in a motorhome as well as a house. The 360 degree intake means placement matters less than it does on side-drawing units.

Winix T500 air purifier displayed with an AHAM verification document on a table

Verified performance at a fair price

AHAM verified the unit at 251 square feet, with CADR ratings of 172 dust, 174 pollen and 162 smoke. That is documented performance rather than a marketing claim, at a mainstream price point.

Where the T500 earns its space

Sized for rooms AHAM verified at 251 square feet, the T500 suits people who want one quiet, sensor-driven unit in a bedroom, office or den rather than a large whole-house machine they have to manage.
Winix T500 air purifier running on a nightstand in a tidy bedroom with the bed made

Overnight use in a bedroom

Minimum noise is listed at 25.4 dB and Sleep Mode dims the unit, so it can run through the night without becoming the loudest thing in the room. That matters for anyone managing pollen or dust while they sleep.

Winix T500 air purifier in a living room with a cat sitting on a sofa in the background

Pet dander in shared living rooms

The pre-filter catches hair and the True HEPA stage captures dander at 99.99%, which is where pet-heavy households usually struggle. The carbon layer also works on the smell that settles into sofas and rugs.

Winix T500 air purifier in the corner of a small studio apartment beside a chair

Apartments and small rooms

It draws air from all sides, so it does not need to sit against a wall the way side-intake units do. That makes it workable in a studio, a child's room or a rented apartment where floor space is genuinely tight.

Winix T500 air purifier secured on a table inside a bright motorhome living area

Traveling in an RV or motorhome

Reviewers report using the T500 in a motorhome as well as a house, and its low draw of around 12 watts on low keeps it practical on limited power. Just give the intake clearance on a firm, level surface.

Winix T500 air purifier on a kitchen counter beside a stove with a pan cooking

Cooking odor between rooms

Cooking odor is exactly what the activated carbon stage is there for. Set it near the kitchen doorway and auto mode lifts the fan speed as smoke or smells drift out, then settles back down once the air clears.

Winix T500 air purifier on the floor beside a desk in a home office with a chair

Desk-side air in a home office

A desk is where you sit for hours breathing the same air, so a small sensor-driven unit nearby makes sense. At 25.4 dB minimum it stays out of the way on calls, and the app lets you check it from your seat.

Getting it running well

Simple setup, steady results

Winix T500 air purifier placed on a level wooden floor with open space around its base

Place it with breathing room

Set it on a firm, level surface with clearance around the 360 degree intake. Reviewers note it can feel tippy in tight spaces, so a stable base helps.
Adult hand pressing the control panel on the top of the Winix T500 air purifier to select auto mode

Run auto mode first

Power on, choose auto mode, and let the sensor set fan speed for you. The air quality light shows what it detects, so you can confirm the unit is responding.
Adult hands rinsing the removable fine mesh pre-filter of the Winix T500 under a sink

Refresh the pre-filter

Rinse or wipe the fine mesh pre-filter every few weeks. Keeping it clear holds airflow steady and lets the HEPA stage behind it last to its full rated life.
From verified owners

What T500 owners report after weeks of use

Questions buyers actually ask

Straight answers before you decide

The T500 runs a fine mesh pre-filter, an activated carbon filter for odors and a True HEPA filter rated at 99.99% capture, with PlasmaWave as a fourth cleaning stage. Rinse the pre-filter regularly and watch the filter indicator or app for timing on the main filters.
AHAM verified the T500 at 251 square feet, with CADR ratings of 172 for dust, 174 for pollen and 162 for smoke, at roughly 4.8 clean air changes per hour. That suits a bedroom, nursery or office well. Open plan areas larger than that call for a bigger Winix model.
Minimum noise is listed at 25.4 dB and Sleep Mode quiets and dims the unit for nighttime. Reviewers describe running it in a home and a motorhome without complaint. On higher fan settings the motor is audible, though auto mode usually keeps things low in a quiet room.
PlasmaWave is Winix’s ionization stage, a low-voltage process designed to help reduce air pollutants while producing much lower ozone levels than conventional ion generators. If you have any concern, it can be switched off and the mechanical filters still do the work on their own.
WiFi control is handled through the Winix Smart App, which lets you adjust settings and check status without walking over to the unit, and setup needs your home WiFi network. Owners who tried it describe the connectivity as a genuinely handy extra rather than a gimmick.
Availability changes by retailer, and the listing here currently shows the unit as out of stock. Winix products are commonly sold through retailers including Home Depot, Walmart, Amazon and Costco, so checking a few of them is worth a few minutes before you commit.