Filterless. As low as 30 dB.

The quiet air purifier with no filter to fight

Most air purifiers are loud for one reason: the fan has to force air through a dense HEPA filter. AirSoap has no filter in the way — so it moves the same clean air with far less effort, and far less noise. As quiet as 30 dB on its sleep setting: whisper-quiet, and it stays that way.

Shop AirSoap Why it's so quiet
~30 dB on low (whisper-quiet)  •  no filter resistance  •  doesn't get louder as it "loads"
The Reason

Why is AirSoap so quiet?

Air purifier noise mostly comes from the fan — and the harder a fan has to work, the louder it gets. A traditional purifier pushes all its air through a dense HEPA filter, which fights the airflow. To hit its clean-air rating, the fan has to spin faster, so you hear motor whine and the rush of air forcing through the filter. Worse, as the filter loads with dust, resistance climbs and it gets louder over time.

AirSoap's TPA (Two-Pole Active) technology has no dense filter to push through. Air passes across charged collection plates with very little resistance, so the fan moves the same clean air while spinning slower and quieter — as low as 30 dB on its sleep setting. And because you rinse the plates instead of clogging a filter, it doesn't creep louder as it ages.

30 dB on its sleep setting about as loud as a whisper
How Quiet Is 30 dB?

Quieter than the fridge, close to a whisper

Decibels are how loudness is measured. Here's where AirSoap on its low setting lands against everyday sounds.

20 dB3040506070 dB ~30 dB AirSoap on low ~45 dB Refrigerator hum ~40 dB Quiet library ~60 dB Normal conversation
AirSoap runs about 30 dB on its low/sleep setting and up to the high-50s to mid-60s dB on its highest fan speed — use high for a quick clean, low for overnight. Everyday-sound levels are approximate.
Quiet by Design

Less resistance, less noise, no creep

~30 dB
On its low / sleep setting
No filter
No dense HEPA media for the fan to fight
Stays quiet
Rinse the plates — noise doesn't climb as it ages
Where Quiet Matters

Built for the rooms where noise is the dealbreaker

A purifier only helps while it's running. Quiet is what lets you leave it on where it matters most.

💤

Bedrooms

Quiet enough to run all night on low, so you get cleaner air without a fan drone keeping you up.

👶

Nurseries

Won't wake a sleeping baby. Run it by the crib overnight — see our air purifier for nursery page.

💻

Home offices

No fan roar on video calls or while you're concentrating — it fades into the background of a workday.

💃

Light sleepers & studios

For anyone sensitive to noise or living in one open room, a purifier you can't hear is the one you'll actually keep on.

Why HEPA Gets Loud

The filter is the noise

Same goal — clean the air — but only one design makes the fan fight for every cubic foot.

HEPA air purifier

The fan fights the filter — and it worsens

Pushing air through dense HEPA media takes pressure, so the fan spins fast and loud to hit its rating. You hear motor whine plus the rush of air through the filter. As the filter fills with dust, resistance rises and it gets louder — until you replace it and start over.

AirSoap TPA

Low resistance, steady quiet

Air flows across charged plates with little resistance, so the fan moves the same clean air while running slower and quieter — about 30 dB on low. Rinse the plates and resistance resets, so it never creeps louder the way a loading filter does.

Run It and Forget It

The purifier you'll actually leave on

Clean air is about runtime, not bursts. A purifier quiet enough to ignore is the one that stays on overnight and through the workday — which is exactly when it's doing the most good.

Clearing a specific trigger too? See our air purifier for allergies and air purifier for asthma pages.

Find Your Fit

The quietest AirSoap for your room

Both run the same low-resistance, filterless TPA technology — pick the size for your space.

AirSoap X3 quiet filterless air purifier for a bedroomBEST FOR BEDROOMS

AirSoap X3

The quiet filterless air purifier for bedrooms, nurseries, and offices up to 860 sq ft — about 30 dB on low.
$319.95 $399.95Shop X3 →
AirSoap X5 quiet large room filterless air purifierBEST FOR LARGE ROOMS

AirSoap X5

The quiet large-room option for open living areas up to 1,600 sq ft — big airflow, still low-resistance and calm.
$649.95Shop X5 →
FAQ

Quiet air purifiers, answered

Why are air purifiers so loud?+
The noise comes mostly from the fan working to push air through a dense HEPA filter. That resistance forces the fan to spin faster and louder, and you also hear the air rushing through the filter. As the filter loads with dust, resistance rises and the purifier gets louder over time. AirSoap avoids this: with no dense filter, air flows across charged plates with little resistance, so the fan runs slower and quieter — about 30 dB on low.
How quiet is the AirSoap, in decibels?+
About 30 dB on its low/sleep setting — roughly the level of a whisper, and quieter than a refrigerator hum (~45 dB). On its highest fan speed it runs louder (high-50s to mid-60s dB) for a fast clean, so most people run it high for a while, then drop to low for overnight quiet.
Is it quiet enough to sleep with in the bedroom?+
Yes — on low it's whisper-quiet at about 30 dB, made to run all night without a fan drone. That's the point of a low-resistance design: it's quiet enough that you'll actually leave it on, which is when it does the most for your air.
Is it quiet enough for a nursery?+
Yes. On its low setting it's quiet enough to run by the crib without waking a sleeping baby, and some AirSoap models dim their lights for a dark room. See our air purifier for nursery page for placement and safety details.
Does it get louder as it gets older, like a HEPA purifier?+
No. A HEPA purifier gets louder as its filter loads with dust and resistance climbs. AirSoap collects particles on washable plates — you rinse them and resistance resets, so it doesn't creep louder over time the way a clogging filter does.
Which is the quietest AirSoap?+
Both the AirSoap X3 and AirSoap X5 use the same low-resistance TPA design and run around 30 dB on low. Choose by room size — the X3 for rooms up to 860 sq ft (bedrooms, nurseries, offices), the X5 for open areas up to 1,600 sq ft.

A purifier quiet enough to forget

Filterless TPA that cleans your air at about 30 dB on low — no HEPA filter to fight, no noise creep as it ages, and nothing to replace.

Shop AirSoap Air Purifiers

Noise figures are approximate and vary by fan speed, room, and placement: AirSoap runs about 30 dB on its low/sleep setting and up to the high-50s to mid-60s dB on its highest fan speed (manufacturer specifications for AirSoap X3/X5). Everyday-sound comparison levels are approximate. The reduced-noise explanation reflects the lower airflow resistance of a filterless collection-plate design compared with dense HEPA media; actual loudness depends on the specific units compared. AirSoap is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease.