Air purifiers do a great job of filtering out harmful particles and making the indoors healthier. But that whirring or humming can be noticeable, especially when trying to sleep. So what’s the best quiet air purifier?
Many of today’s top-rated air purifiers offer powerful filtration while operating at whisper-soft decibel levels. Some models even come with dedicated sleep modes, customizable fan speeds, and intelligent sensors that adapt to your room’s needs without disturbing the peace.
In this mini guide, we put a spotlight on the best quiet air purifiers around, available now on Amazon.
You’ll be able to compare the decibel (dB) level of each air purifier, and read about other remarkable features. But first….
How loud are air purifiers?
Air purifiers have a pretty wide sound range – a lot depends on their size and power. Louder models can be up around the 60-80 dB level (similar to a kettle), while the quietest air purifiers which we cover here are as quiet as 20-40 dB; comparable to some air conditioners on the quietest setting.
| Appliance | Noise level |
| Blender | 60-90 dB |
| Kettle | 60-80 dB |
| Wall air conditioner | 50 dB |
| Air purifier | 25-75 dB |
Skip to:
- LEVOIT 300S-P Smart Air Purifier
- LG PuriCare AeroTower
- BLUEAIR
- Clorox Large Room Air Purifier
- iAdaptAir 2.0
- Winix 5510
Before we get into the list, some stats:
#1 – LEVOIT 300S-P Smart Air Purifier – 24 dB
Low-noise at 24 dB, excellent value, and with the option of a specially-designed Pet Allergy filter; this LEVOIT model is as quiet as it is versatile.
Levoit is a trusted manufacturer of air purifiers and dehumidifiers – so it’s a good place to start. When you want to sleep, just switch the Levoit 300S-P over to Sleep Mode; which makes a near-silent 24 dB.
How does the Levoit 300S-P achieve such low noise? It’s down to QuietKEAP Technology. To give it its full name, this is Kinetic Absorption Pad Technology which uses shock pads to reduce noise to a bare minimum.
A 56W long-life high-torque motor means that this mode can purify a space of up to 1095 sq ft. There are a few filter choices to use from – including a Toxin Absorber, Pet Allergy Filter, and Smoke Remover.
Pros
- Very low noise on Sleep Mode (24 dB)
- Options of pet and smoke filter
Cons
- May be louder on most powerful setting
Best for: Pet owners
#2 – LG PuriCare AeroTower – 23 dB
Super-quiet and intelligently-designed, the PuriCare AeroTower is a titan in the air purifier world, but it’s elegant, artistic design and low noise mean it can go almost unnoticed.
Here’s another quiet air purifier that gives you ultra-low noise, and so much more in the bargain.
The PuriCare AeroTower is a sophisticated, premium air purifier from LG that can go as low as 23 dB on the lowest setting – that means whether it’s in your living room or bedroom, it can go unnoticed.
Its slim, elegant design means it isn’t an eyesore – it’s almost a sculpture! – fitting in nicely with both modern and classic interiors.
Now we get to the air quality, and thanks to NanoFiber True HEPA technology, the PuriCare AeroTower is about as good as it gets, removing 99.97% of particles, including fine dust, according to the manufacturer.
There is wifi control through the LG ThinQ app, and an Air Quality Smart Indicator with an LED light system.
All things considered, this might be the best quiet air purifier out there…
Pros
- Very quiet (as low as 23dB)
- Elegant design
- Superb air filtration
- Smart connectivity (control via smartphone app)
Cons
- Premium price point
Best for: Living rooms
#3 – BLUEAIR – 24 dB
Ideal for those who require an air purifier with a soft or subtle sound in a smaller bedroom or office. The BLUEAIR is good value and offers efficient air filtration.
On to the BLUEAIR, which can also get down to a whisper-quiet 24 dB at its lowest noise level.
It can purify a space of 432 sq ft in around 30 minutes, and a small room space of 180 sq ft in around 12.5 mins, which makes the BLUEAIR a nice choice for small-to-medium-sized spaces including bedrooms and home offices. It offers dual filtration HEPASilent technology.
This air purifier is energy efficient, using less energy than a light bulb, and has simple, user-friendly controls.
You’ll get several pre-filter colour options, meaning that you can change the external look if you like. It comes with a dark grey pre-filter included.
Pros
- Quiet (24 dB on lowest setting)
- Excellent value
- Dual filtration technology
Cons
- Not the most powerful
Best for: Small bedroom or home office
#4 – Clorox Large Room Air Purifier – 30 dB
Reliable, powerful and intelligent… not to mention in the quiet air purifier category at 30 dB – the Clorox is a good no-fuss option for cleaning air in larger spaces.
We’ll give the Clorox a place in this list, because of its excellent features. Even though it’s not the quietest air purifier, it’s still quiet at 30 dB.
With the power to cover a large room of up to 1,500 sq ft, this Clorox air purifier is ideal to leave to its own devices in a big living space. Put it in Auto Mode, and it will think for itself, adjusting its settings according to the air quality and selecting the fan speed needed – clever!!
Want to take a look at the air quality reading? A PM2.5 digital display and colour coded light will give you real-time feedback.
Other than that, we should reassure you that this Clorox purifier is the real deal, it offers True HEPA filtration which capture 99.97% of small particles.
Pros
- Powerful enough for large room
- Quiet (30 dB)
- Auto Mode
Cons
- Not the very quietest on the market
Best for: Large rooms
#5 – iAdaptAir 2.0 – 25 dB
An outstanding air purifier which combines extreme quietness with power and an impressive array of features, including smart controls via a dedicated phone app and air quality display.
If you won’t give the LG PuriCare AeroTower the quiet air purifier crown, maybe the iAdaptAir 2.0 is worthy?
You’ll get a rock bottom noise level, with it operating at just 25 dB. We were struck with just how many buyers backed up the low noise level of this model, describing it as “very quiet” and “super quiet”.
However, the iAdaptAir 2.0 is about far more than just low noise. It boasts market-leading power, with a 177 CFM for one of the highest clean air delivery rates. It can easily cover a 1,325 sq ft space in one hour or 265 sq ft.
With its long-life filters, total cost of ownership is reduced with less replacements needed. There’s an air quality sensor and display, as well as smart controls via wifi. All in all, an impressive quiet premium air purifier option.
Pros
- Very quiet (25 dB)
- Powerful and fast filtration
- Smart controls (through smartphone app)
Cons
- Premium price point
Best for: Those who want the very best quality
#6 – Winix 5510 – 27 dB
Reliable large room option with quiet operation, HEPA filtration and decent power / speed; all for a reasonable price.
We’ll end with a very solid quiet air purifier in the mid price category.
The Winix 5510 has the power you need… being able to clean large 1,881 sq ft rooms in just one hour. But it doesn’t make a racquet when you aren’t pushing it to the limit, able to operate at a very inoffensive 27 dB.
It uses Winix True HEPA technology for filtration, has a washable fine mesh pre-filter and can be controlled via your smartphone any time thanks to the Winix Smart App.
There’s also an air quality indicator for you to check the state of the air in a room at any time.
Pros
- Quiet operation (27 dB)
- Powerful
Cons
- Highest fan setting reported by users as loud
Best for: Budget quiet option for large rooms
