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Winix Replacement Filter

This category gathers Winix air purifiers spanning compact bedrooms through to large open plans. Compare room coverage, filter stages, sensor-driven auto mode and PlasmaWave support to settle on the right unit for your home.
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Winix Compact True HEPA Air Purifier with Auto Mode for Bedrooms and Home Offices
This compact Winix unit suits a bedroom or home office where space is tight but the air still needs steady attention. A washable pre-filter, carbon layer and True HEPA stage work together, while the sensor-driven auto mode quietly raises fan speed when particles rise.
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Winix Mid-Size True HEPA Air Purifier with PlasmaWave and Auto Mode for Everyday Living Rooms
Larger rooms need more airflow, and this mid-size Winix purifier delivers it without dominating the corner. The particle sensor drives auto mode, the carbon layer takes on household odours, and True HEPA media captures fine dust and pollen through every season.
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Winix True HEPA Air Purifier with Washable Pre-Filter and PlasmaWave for Pet Homes
Homes with shedding pets ask more of a filter stack, and this Winix purifier answers with a washable pre-filter that traps hair before it reaches the finer media. Carbon helps with litter and pet odours, while True HEPA captures dander down to 0.3 microns.
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Winix Large-Room True HEPA Air Purifier with PlasmaWave and Auto Sensor for Open Plans
Open plans and high ceilings spread particles across a wider footprint, so this larger Winix purifier carries a higher coverage rating. The familiar three-stage filtration and sensor-led auto mode scale up, and PlasmaWave adds a further pass on smoke and stubborn odours.
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Winix Entry-Level True HEPA Air Purifier with Sensor Auto Mode for Small Rooms and Starter Apartments
A straightforward first purifier for a guest room or starter apartment. It keeps the familiar Winix filter stack and sensor-driven fan control, so you still get True HEPA filtration and odour help without paying for features a small room will never use.
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New Arrivals in Air Care

New arrivals span compact desk-side units and larger whole-room purifiers, each added for a distinct coverage or filter need.
A Winix tower air purifier on a living-room floor with its filter bay door open showing the clean True HEPA cartridge

Winix True HEPA Air Purifier with PlasmaWave and Auto Mode for Busy Family Rooms Every Day

Sensor-driven auto mode reads the air and adjusts fan speed, so the unit ramps up during cooking and settles back at night. A washable pre-filter catches pet hair and dust, the carbon layer handles household odours, and the True HEPA stage captures 99.97 percent of airborne particles down to 0.3 microns.
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Shopper Favourites by Need

Popular Picks for Every Room and Routine

Winix Quiet-Running True HEPA Air Purifier with Auto Mode for Night-time Bedrooms and Guest Rooms

Night-time use rewards a unit that stays quiet on lower speeds. This Winix purifier settles into a low hum on its own once the sensor reads clear air, and the True HEPA stage keeps pollen and fine dust from cycling back through the bedroom overnight.
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Winix Smoke-Cleaning True HEPA Air Purifier with PlasmaWave for Wildfire Season Homes

Smoke events push small particles indoors for days, and this larger Winix purifier is built for that sustained load. True HEPA media captures 99.97 percent of particles at 0.3 microns, while the carbon layer and PlasmaWave together tackle the smell that lingers afterwards.
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Winix Carbon-Layer True HEPA Air Purifier with PlasmaWave and Auto Mode for Open Kitchens

Cooking smells linger longest in open kitchens, so odour control matters as much as particle capture. The carbon layer in this Winix purifier absorbs smoke and grease particles, and auto mode speeds the fan up during cooking before winding it back down afterwards.
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Winix Allergy-Friendly True HEPA Air Purifier with Auto Sensor for Pollen Season at Home

Seasonal pollen finds its way indoors on clothes and pets, and this Winix purifier keeps it from settling in the rooms you use most. The True HEPA stage does the heavy work, while auto mode responds to the morning and evening spikes without any prompting from you.
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Winix High-Coverage True HEPA Air Purifier with PlasmaWave for Living Rooms and Hallways

Air has to travel farther in an open living room, and a compact purifier just cycles the same corner. This Winix model carries a higher coverage rating, keeps the three-stage filter stack intact, and lets auto mode lift the fan when sensor readings dip, then wind back down once the room clears.
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Winix True HEPA Air Purifier with PlasmaWave and Auto Mode for Basements and Playrooms

A basement or playroom collects dust from concrete, storage and constant foot traffic, so filtration matters more than looks. This Winix purifier places a washable pre-filter ahead of the carbon and True HEPA stages, and PlasmaWave gives musty odours one more pass before the air drifts upstairs.
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Where a Winix Purifier Earns Its Place

From nurseries to pet rooms, each scenario points to a different coverage level, filter mix and noise preference, so you can plan around how the space is actually used.
A Winix air purifier standing on the floor beside a crib in a softly lit nursery

Quiet Air Care for a Nursery

A nursery needs steady cleaning more than constant high speed. Auto mode lifts the fan only when particles rise, then settles back, while True HEPA captures fine dust and pollen so the air stays calm through nap time.

A Winix air purifier on a living-room floor beside a woven dog bed with scattered pet toys

Steady Filtration in Pet Rooms

Pet hair and dander load a filter faster than dust alone. A washable pre-filter traps hair before it reaches the finer media, carbon tackles litter odours, and True HEPA captures dander down to 0.3 microns.

A Winix air purifier on a kitchen floor beside a counter with a covered pan on the hob

Odour Control in Open Kitchens

Cooking pushes smoke and grease into the air faster than the room clears. The carbon layer absorbs odours, auto mode speeds the fan during cooking, and PlasmaWave adds a further pass on stubborn smells afterwards.

A Winix air purifier beside an unmade bed with an open window and leafy branches outside

Pollen Season Control Around the Home

Pollen arrives on clothes, hair and pets, then settles on soft surfaces. A True HEPA stage captures 99.97 percent of particles at 0.3 microns, and auto mode responds to morning and evening spikes without prompting.

A Winix air purifier on the floor beside a home-office desk with a monitor and an office chair

Steady Filtration in a Home Office

A home office rewards steady filtration, because dust settles on desks and keyboards through a long working day. True HEPA captures fine particles, and auto mode lifts the fan only when movement stirs the air up.

A Winix air purifier standing beside a neatly made-up guest bed with a small suitcase on a bench

Ready Air for an Occasional Guest Room

Guest rooms sit empty for stretches, then fill at once, so dust accumulates unseen. A True HEPA stage clears fine particles and pollen before visitors arrive, and auto mode keeps the unit quiet through the night.

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How size, guards and price change which filter fits

Five differently sized Winix replacement filter cartridges lined up on a white table beside a printed model-number card

Match the model number

Filter letters S, A, H, R, B and C each fit a distinct Winix model.

A large whole-house replacement filter cartridge held next to a small compact bedroom filter cartridge for size comparison

Know your filter size

Bigger units need larger filters that cost a little more per cycle.

An exploded view of a replacement filter showing pre-filter, carbon layer, pleated HEPA media and a thin guard layer separated slightly

Add a guard layer

Guard versions add an allergen, pet or smoke layer to the base filter.

Three replacement filter cartridges on a shelf each with a small blank discount tag hanging from a string

Weigh the discount

Discounts range from 23% to 35%, so timing shapes yearly cost.

A used grayed filter cartridge placed beside a bright white unused replacement filter on a countertop

Plan for replacement

Filters wear gradually, so plan replacements before airflow drops.

A cutaway of a replacement filter cartridge revealing the carbon layer and white pleated True HEPA media inside

Compare stage by stage

Each filter stacks pre-filter, carbon and True HEPA stages in one unit.

Find Your Fit

Three Ways to Narrow the Range

Three Winix air purifiers of increasing height lined up against a wall from small to large
Match Coverage to Your Room Size

Start with square footage. Compact units suit bedrooms and offices, mid-size models cover everyday living rooms, and higher-coverage purifiers handle open plans and high ceilings without overworking the fan.

Four replacement filter cartridges arranged in a row showing different guard layers
Pick the Guard Layer You Actually Need

Guard versions add an allergen, pet or smoke layer on top of the base filter. If that is your main worry, pay for the guard; if not, the standard cartridge keeps running cost lower each cycle.

Two replacement filter cartridges on a shelf with blank sale tags beside a wall calendar
Balance Filter Price Against the Cycle

Discounts here run from 23 to 35 percent, and filters are suggested for replacement every 6 to 12 months. Buying on sale and matching the cycle to your usage keeps the yearly cost predictable.

Shopper Voices

What Owners Say About Living With Winix

I spent an evening matching filter letters to model numbers before ordering. The cartridge seated on the first try, and after a month of auto mode the bedroom air still feels cleaner on pollen days, which was the whole reason I bought one.
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Marisol P.Matched the filter letter to her model first try
Room coverage numbers differed between listings, so I measured my living room first. The purifier I chose reacts within seconds when cooking smoke rises, then drops back to a low hum once the sensor reads clear air again.
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Dev R.Measured the living room before choosing a size
I left PlasmaWave off for a week to compare. Kitchen odours lingered noticeably longer, so I switched it back on and now it clears cooking smells before I finish washing up, with no extra noise or smell coming from the unit.
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Hannah T.Tested PlasmaWave off and on for a full week
Filter cost was my main worry going in. Discounts of about a third appeared before my six-month reminder, so I ordered a spare early and never had to wait, and the washable pre-filter keeps pet hair from clogging the finer media.
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Owen L.Timed a spare filter purchase to catch the sale
Auto mode was the feature I doubted most. In practice the fan rises when the sensor catches dust from vacuuming, then settles into a quiet hum, so I leave it running in a shared nursery overnight without disturbing anyone.
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Priya S.Relied on auto mode in a shared nursery
Questions shoppers ask

Practical answers before you choose a filter

Check the model number printed on the back or underside of your unit, then choose the filter letter that lists that exact model. Filter letters S, A, H, R, B and C each map to a distinct Winix model, so a close-looking cartridge can still fail to seat correctly.
True HEPA media traps 99.97 percent of airborne particles as small as 0.3 microns, including fine dust, pollen and many smoke particles. That matters most for allergy sufferers and smoky kitchens, where a plain HEPA-type filter will let more of the smallest particles pass through.
Room coverage is usually quoted in square feet at one air change per hour, so a room with high ceilings may need a larger unit than the number alone suggests. Match the rating to your room, then let auto mode work the fan harder whenever the sensor detects a drop in air quality.
PlasmaWave releases a mild charge that helps neutralise odours, smoke and some airborne irritants without producing harmful ozone. It works as an extra stage alongside the filter stack, and on most Winix units you can turn it off from the control panel if you prefer to rely on the filters alone.
Most Winix filters are suggested for replacement every 6 to 12 months depending on use, pets and smoke exposure. Prices vary by filter size, and discounts from 23 to 35 percent appear regularly, so timing the purchase can trim the yearly running cost noticeably.
Auto mode uses the built-in particle sensor to raise fan speed when pollution spikes and drop it once the air clears, which keeps noise and energy use lower than a constant high setting. Run high briefly after cooking or vacuuming, then let the sensor manage the rest of the day.

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