The Airthings Renew delivers solid air purification performance in a sleek and compact design, but it's quite expensive and it lacks key features like onboard PM2.5 readings and voice assistant support. While its cleaning efficiency is strong, the absence of deeper air quality insights and smart home integration (beyond IFTTT) holds it back. If design, quiet operation, and ease of use are priorities, it's a good option but better-featured competitors exist at this price point.
Pros
- Sleek, compact design
- Effective air purification
- Easy to set up
- Quiet operation
Cons
- Expensive for features
- No smart home compatibility
- Basic on-device data
- Costly filter replacements
Airthings Renew: Introduction
- Type: Air purifier
- Range: up to 525 sq ft / 49 m2
- Filters: HEPA H13 and activated charcoal

Airthings, one of the leading lights in indoor air quality and radon monitoring, took the covers off of the Airthings Renew last year; its first smart air purifier.
The Airthings Renew represents a brand new area for the Norwegian brand, who previously just monitored air quality with the likes of the View Plus and Wave Mini, so it’s a bold step to start offering to clean air too, albeit a natural progression.
The Renew is a slick-looking smart air purifier that aims to not only enhance air quality but provide better sleep conditions; its makers claim that it is perfectly suited to a bedroom.
It boasts a 4-stage HEPA-13 filter and high-performance carbon filter, the Renew removes 99.97% of particulates, gases, and odors, and is capable of purifying the air in a typical bedroom within 10 minutes.
Priced at $399.99, the Airthings Renew is on the pricier side of air purifiers with its range. You’ll get cheaper options from the likes of Dreo and Welov.
Yes, it’s around half the price of top-end rivals such as the Dyson Purifier Big+Quiet Formaldehyde or the Molekule Air Pro, but it is also only capable of handling half the area… so they are a decent pound-for-pound comparison.
Read on to see how it performed in testing…
Design and components
- 41 x 41 x 17 cm
- 5.4kg
- Multiple placement options
One of the Airthings Renew’s biggest strengths is its slick, slimline design.
Unlike bulkier options like the aforementioned Dyson Purifier Big+Quiet Formaldehyde or the Molekule Air Pro, this purifier is far more discreet; it even features a fabric handle so you can carry it around from room to room.

It’s miles better looking than lower priced air purifiers, which often resemble office fans from the 1990s.
Its rectangular shape and off-grey shade means it can easily be blended into the background of most rooms and you’ve also got the option of placing it in multiple ways: upright, on its side or even wall mounted – there’s a fixture in the box if you want to do this.

You will have to allow for around 8 inches of space on the fabric covered side though, for the air to flow through.
Up top you’ll find a little control panel that features small backlit buttons for power, Auto, Boost, and Sleep modes, as well as fan speed adjustments (from 1-5), which are nicely indicated with a gradient style light.
Annoyingly, there’s no way of seeing detailed air reading data on the device itself, it’s limited to a green, amber or red LED light system, which sits alongside an LED for the Wi-Fi status, and another one that warns you when you need to change the filter.

The side-panel filtration system allows for easy filter changes for both the HEPA and carbon variants – although you don’t get a warning when to do this in the app, so keep an eye on that light on the device.
Airthings suggests you change them every 6 months or so which, at $70 a pop, will be quite an expensive commitment.
On one side is a nice cable-tidy system, so you don’t have to have wires on show.

Setup and the app
- 2.4GHz Wi-Fi only
- No smart home ecosystem support
Setup the Airthings Renew up is a refreshingly simple affair. It connects to your phone, and the Airthings app, initially over Bluetooth before asking you to enter your home Wi-Fi details. It’s 2.4GHz only, so you might have to disable 5GHz on your router if you experience any syncing issues.
The Airthings app provides full control, including mode selection and power toggles, though surprisingly, there’s no scheduling features.

It’s the same app that is used for Airthings’ range of air quality monitors. From the app, you can see the current air quality status and dive in to view sensor readings, with historical graphs. If you don’t already have an Airthings account, you will need to create one.
The app, like the LED lights on the Renew itself, uses green, yellow, or red indicators, based on the amount of PM2.5 in the air. Green indicates that the air quality is good (less than 10µg/m3), yellow means fair (10-25 µg/m3), and red means poor (more than 25 µg/m3) and you’ll get some nice graphs showing you the actual readings.
You can set it to give you warnings when the PM2.5 level reaches a certain level via notifications.
What you won’t get is any further data. It doesn’t provide information on other airborne pollutants such as CO2 (carbon dioxide), NO2 (nitrogen dioxide), PM10 (particulate matter up to 10 microns in size, including dust, mold, and pollen), or VOCs (Volatile Organic Compounds)
There is also, somewhat incredibly, no smart home ecosystem support. No Alexa, no HomeKit, no Google Home, no Matter. There’s IFTTT but, come on, it’s not 2017.
The “Insights” section of the app provides a five-day pollen forecast based on location, color-coded similarly to the PM2.5 indicator. While useful, it doesn’t make up for the purifier’s lack of real-time detailed air quality data and there’s also no outdoor pollution level information either, as is common in rivals.
Performance

Airthings claims the Renew removes 99.97% of harmful pollutants (0.3 microns and larger) and has a CADR (clean air delivery rate) of 140 CFM (cubic feet per minute).
It’s suited to rooms at 525 square feet or less, where it will change the air twice in an hour.
Performance is pretty impressive, with the Renew quickly responding to airborne pollutants.
In testing, it cleared my pre-polluted kitchen – full of bleach, cleaning spray, and cooking fumes – from red (poor air quality) to green (good air quality) in under 10 minutes.
But you have to do everything manually as there’s no scheduling, as mentioned. With air purifiers I like to leave it them on ‘auto’ mode most of the time, but switch to a more intense setting for an hour in the early morning, but have a quiet ‘sleep’ mode overnight.
Auto and Sleep modes are both on offer with the Renew, but you will have to manually change between them, using the buttons up top or via the app.
While slightly slower than the Dyson Big+Quiet, it’s also a fraction of the size and cost
The unit operates relatively quietly, peaking at 52.9dB in Boost mode in my testing.

Final thoughts
The Airthings Renew gets a lot right: it’s well-designed, easy to use, and effectively purifies the air.
However, at $399.99, the lack of smart home integration, limited air quality insights, and missing scheduling features make it hard to fully recommend over competitors with more robust feature sets.
If you value aesthetics and simplicity over deep data insights, it’s a solid choice, but for a truly smart air purifier, you may want to look elsewhere.
How we test
When we publish our reviews, you can rest assured that they are the result of “living with” long term tests.
Air purifiers usually live within an ecosystem, or a range of products that – supposedly – all work in harmony. And they are designed to offer a range of different options. Therefore, it’s impossible to use a machine for a week and deliver a verdict.
Because we’re testing smart home kit all day, everyday, we know what matters and how a particular smart cleaning machine compares to alternatives that you might also be considering.
Our reviews are comprehensive, objective and fair and, of course, we are never paid directly to review a device.
Read our guide on how we test to learn more.
FAQs
Airthings recommends replacing both the HEPA and carbon filters every six months.
Unfortunately, no. The Renew lacks integration with popular smart home ecosystems like Alexa, Google Home, and HomeKit.
Airthings recommends the Renew for rooms up to 525 square feet, where it can change the air twice per hour.
Airthings Renew: Specifications
Product name | Airthings Renew |
Launch date | 2024 |
US price | $399.99 |
UK price | £349 |
Wireless connectivity | Router operating at 2.4 GHz and 802.11b/g/n |
Operating conditions | Temperature: 32 °F – 113 °F (0° C – 45° C) Humidity: 5% – 95% (non-condensing) |
Product specifications | Weight: 11.9 lbs (5.4 kg) (with power cable) Dimensions: 16.1 x 16.3 x 6.7 in (41 x 41.3 x 17 cm) Power cable: 5.6 ft (1.7 m) |
Package specifications | Weight: 15 lbs (6.8 kg) Dimensions: 18.1 x 19.2 x 8.8 in (46 x 48.8 x 22.4 cm) |
ACH (air changes per hour) | 5 x for 210 sq ft room (19.5 m2) 4.8 x for 219 sq ft room (20 m2) 4 x for 263 sq ft room (24 m2) 3 x for 350 sq ft room (33 m2) 2 x for 525 sq ft room (49 m2) |
CADR (clean air delivery rate) | 140 CFM |
Noise level | 23 dB (Silent mode) – 51 dB (Boost mode) |
Power usage | 1 W (Standby) – 2.6 W (Silent) – 31.5 W (Boost) |
Air quality sensor(s) | High-precision laser-based particulate matter 2.5 (PM2.5) |
Pre-filter | Two pre-filters to trap larger particles: Audio-grade textile outer pre-filter Removable & washable inner pre-filter |
Particle filter | Yes – HEPA 13 – Removes 99.97% of all particles in the air measuring 0.3 microns in diameter. Replaceable. One unit included with purchase of Renew. |
Activated charcoal filter | Yes – Removes odors and VOCs. Replaceable. One unit included with purchase of Renew. |
Power cable length | 5.6 ft (1.7 m) |
Control panel | Backlit, dimmed in Silent mode |
Child lock | Yes |
Air quality indicator light | Uses green, yellow, and red to indicate good, fair, or poor air quality. |
Operational speeds | 5 |
Modes | Auto, Boost, Sleep |