Room air purification

Winix 5300-2: True HEPA for Big Rooms

The Winix 5300-2 pairs True HEPA filtration, carbon odor reduction and PlasmaWave ionization with smart air quality sensing, handling rooms up to 99 m². It tackles dust, pollen, pet dander and household odors at a fair price.
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The Winix 5300-2 air purifier shown beside its separate pre-filter, carbon filter and True HEPA filter laid out in a row
How the 5300-2 works

Four Stages Working Through One Room

Four stages pass the same air through a washable pre-filter, a carbon layer, a True HEPA filter and PlasmaWave ionization. They tackle particles, odors and pollutants, while a sensor keeps the fan at the right level for the room.
True HEPA Filtration at 99.999%

True HEPA filtration is rated at 99.999%, capturing the fine particles that standard screens let pass, including PM2.5, pollen, mold spores and dust mite debris in everyday rooms.

PlasmaWave, Explained in Plain Terms

PlasmaWave uses a low-voltage ionization process to help reduce airborne pollutants while producing far lower ozone levels than conventional ion generators, and it can be switched off.

Smart Sensor and Auto Mode Together

The sensor monitors air quality in real time and shows it as blue, amber or red, while auto mode raises or lowers the fan speed so clean air is produced without constant manual adjustment.

Washable Pre-Filter Cuts Upkeep Cost

The carbon and HEPA filters are the only parts you replace. The pre-filter washes clean under a tap, catching hair and dust first so the finer stages last longer between replacements.

Cleaner Air You Can Actually Measure

Four filtration stages plus smart sensing mean fewer allergy flare-ups, less lingering odor and quieter nights — without premium-brand running costs.
A woman resting comfortably on a pale sofa in a bright living room with a Winix 5300-2 air purifier running beside her

Fewer Allergy Disruptions Through the Day

True HEPA captures 99.999% of fine particles, so pollen and dust that normally trigger spring symptoms are pulled out of the air you breathe at home.

A Winix 5300-2 air purifier on a wooden floor near an open-plan kitchen counter after cooking, with fresh clear air

Odors That Don't Linger After Dinner

The carbon layer works on household odors and VOCs, from last night's cooking to cigarette smoke, so a living room smells fresh again without opening windows.

A golden retriever lying on a rug near a Winix 5300-2 air purifier in a family living room

Pet Dander Kept Out of the Air

A washable pre-filter catches pet hair and larger debris before it reaches the HEPA stage, helping households with cats or dogs keep airflow steady between cleanings.

A Winix 5300-2 air purifier running beside a bed at night with its control panel lights switched off

A Bedroom That Stays Quiet at Night

Sleep mode drops operation to a whisper-quiet 27 dB and switches off the control panel lights, so the unit keeps cleaning while you sleep undisturbed.

Close view of the Winix 5300-2 control panel showing a blue air quality indicator ring during auto mode

Auto Mode Handles the Guesswork

The air quality sensor reads the room in real time and adjusts fan speed on its own, cleaning harder when air worsens and easing back once it clears.

A Winix 5300-2 air purifier running beside a sunlit window in a home office, showing low-profile daily use

Running Costs That Stay Low

Power draw ranges from just 3 to 70 watts depending on fan speed, so leaving the purifier running through the day adds very little to a household energy bill.

Where the 5300-2 Fits Best at Home

The 5300-2 suits households that need real filtration rather than a basic fan: allergy sufferers, pet owners, smokers and anyone cooking in open-plan spaces will notice the difference fastest.
A Winix 5300-2 air purifier beside a neatly made bed in a calm sunlit bedroom

Bedrooms During Allergy Season

Pollen that drifts indoors overnight is where True HEPA earns its place. Run the unit on a low speed through the night and sleep mode keeps it quiet enough that the bedroom stays restful.

A cat sitting on a sofa with a Winix 5300-2 air purifier running on the floor nearby

Living Rooms With Pets and Odors

Dander and lingering odors build up where pets sleep and people gather. The washable pre-filter takes hair first, and the carbon layer works on the smells that follow.

A Winix 5300-2 air purifier running beside a desk in a bright home office

Home Offices and Study Spaces

Long desk hours mean close, still air. At 27 to 51 dB the unit is easy to live beside, and auto mode responds when you open a window or move around.

A Winix 5300-2 air purifier running in a softly lit nursery next to a crib

Nurseries and Light-Sensitive Sleep

With panel lights that switch off in sleep mode and a 27 dB floor, the unit can sit in a nursery or child's room overnight without disturbing a light sleeper.

A Winix 5300-2 air purifier standing in a home entryway beside a coat rack and shoes

Entryways and Smoke-Prone Corners

Smoke, cooking fumes and outdoor pollution enter through the door. The carbon layer and PlasmaWave target the VOCs and odors that collect in a small entrance space.

A Winix 5300-2 air purifier working in a large open-plan living and dining room

Open-Plan Rooms Up to 99 m²

A 390 m³/h CADR gives the unit enough reach for large, open rooms where air moves slowly. Auto mode steps up when cooking or guests raise the particle load.

Getting set up

Simple Habits That Keep It Working

A Winix 5300-2 air purifier placed a short distance from a wall with clear space around its airflow outlet

Set It Up in the Right Spot

Set it a foot clear of walls with the airflow unobstructed. The sensor gets a truer reading and cleaned air circulates instead of pooling.
An adult hand pressing the auto mode button on the Winix 5300-2 control panel

Run Auto Mode Day to Day

Switch to auto mode and let the sensor pick the fan speed. Use the 1h, 4h or 8h timer for short sessions, or leave it on continuously for best results.
A thin mesh pre-filter from the Winix 5300-2 being rinsed under a running kitchen tap

Keep the Filters Performing

Rinse the pre-filter every few weeks and dry it fully before refitting. Replace the carbon and HEPA filters when the indicator prompts you.
Owner stories

What Owners Report After Living With It

Spring used to be the worst time of year for my allergies, but since the 5300-2 has been running in the living room I have noticed a real reduction in symptoms. I breathe easier, and the slim white body actually suits the room rather than looking like an appliance I have to hide.
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Marta L.Fewer spring allergy symptoms in the living room
What impressed me most is how quietly it runs. I keep it in the bedroom at night and barely notice it is there. Sleep mode is excellent, and I appreciate that it adjusts the fan speed on its own as the air changes, which gives me real peace of mind about overnight use.
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Devin R.Quiet enough for a bedroom every night
After a few months I can honestly say it was worth the money. The 390 m³/h rating means my large living room clears quickly, and it handles pet dander far better than the old unit. The washable pre-filter makes upkeep cheap and genuinely easy to keep up with.
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Priya S.Clears a large living room and handles pet dander
I bought it after reading about the four-stage filtration and it has lived up to the claims. The HEPA stage in particular has made a visible difference indoors, and as someone with asthma I have had noticeably fewer bad spells. It also looks good beside my sofa.
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Tom H.Noticeable difference for an asthma sufferer
The auto mode is the feature I did not know I needed. I set the 8-hour timer before leaving for work, and by the time I get home the sensor has already done the work. Coming back to a room that smells clean has made this the most used appliance in my flat.
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Elena K.Auto mode and timer do the work unattended
Before You Buy

Questions Shoppers Ask About the 5300-2

The unit is rated for rooms up to 99 m² and delivers a CADR of 390 m³/h, so it moves a strong volume of cleaned air in large living rooms as well as bedrooms. For stubborn smoke or heavy pollen, running a higher fan speed in a smaller enclosed space clears the air faster.
PlasmaWave is a low-voltage ionization process designed to reduce airborne pollutants while producing much lower ozone levels than conventional ion generators. If you would rather rely on the filter stages alone, you can switch it off and keep True HEPA and carbon filtration running.
The carbon and True HEPA filters are replaceable units, while the pre-filter is washable and reusable. Exact intervals depend on run time and air quality, so watch the filter indicator and keep a replacement ready rather than waiting for airflow to drop noticeably.
Noise output ranges from 27 dB on the quietest setting to 51 dB on the highest. In sleep mode the fan runs low and the control panel lights switch off, which is why many owners keep the unit beside the bed overnight without noticing it.
Slide out the pre-filter and rinse it under running water, then let it dry completely before refitting. Doing this every few weeks stops large debris from blocking the HEPA stage, protects airflow and extends the life of the more expensive replaceable filters.
The built-in sensor reads particulate levels continuously and reports them as blue, amber or red. When air quality worsens, auto mode raises the fan speed to clean faster, then eases back down once the sensor shows the air has cleared again.

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