If you are looking for an innovative air purifier, then Aura Air is one I would suggest you take a look at! But, if you are looking for a reliable air purifier that uses trusted and tested filtration technology, then the Alen FLEX may be a good choice.
However, for anyone deciding between these two, this comparison will be extremely helpful, mainly because I will compare all the specifications, test results, and characteristics of these two air purifiers, and in the end, I will choose the one which is, in my opinion, a better buying option.
Aura Air is an innovative air purifier intended for rooms up to 325 sq. ft. (30 m²), while the Alen FLEX is a classic air purifier that covers rooms up to 300 sq. ft. (28 m²). They both clean the air 4.8 times in one hour in their suggested room sizes. Both air purifiers have premium build quality, and I must say that I like both designs.
What I don’t like about Aura Air is that you have to connect it to the smart app if you want to use it, which makes it difficult to use the device, even more so if you run into a problem while trying to connect the air purifier to the smart app. On the other hand, the Alen FLEX isn’t a smart air purifier, so it doesn’t have the ability to connect with a smart app or remote controller.
Our Verdict
Entrepreneurs like to say that every innovation is expensive, and that’s why Aura Air is, in my opinion, a bit overpriced. Apart from the price, I don’t like the fact that you have to connect the air purifier to the smart app if you want to use it.
Because of these reasons, and because of better performance, quieter operation, and higher quality filters, I chose the Alen FLEX as the better buying option.
Although I picked the Alen FLEX as the winner in this comparison, you can also go with the Aura Air if budget isn’t a concern. It’s an interesting, innovative, and unusual air purifier that will significantly improve the air quality in your room.
Specs: Aura Air Vs Alen FLEX
| Product Image |  |  |
| Manufacturer | Aura | Alen |
| Model | Air | BreatheSmart FLEX |
| Dimensions (inches / cm) | 14.8 x 14.8 x 6 inches (37,5 x 37,5 x 15 cm) | 8.5 x 15 x 25 inches (21,6 x 38,1 x 63,5 cm) |
| Weight (pounds / kg) | 12.1 lb (5.5 kg) | 15 lb (6.8 kg) |
| Clean Air Delivery Rate (CADR) | 206 CFM (350 m³/h) | 187 CFM (317 m³/h) |
| Coverage (4.8 ACH)
Room Coverage Explanation: ACH is a measurement used in indoor air quality management to indicate how many times the air within a defined space is changed/moved through the filter media.
For more details, visit our ACH calculator tool. | 325 sq. ft. (30 m²) | 300 sq. ft. (28 m²) |
| Performance Ratings Performance Ratings Score Summary: 8.5 - Average Score (67 products) 9.8 - Best Score (2 products) 2.5 - Worst Score (2 products) We use the Temtop LKC-1000S laser particle meter to test the particle removal efficiency of every air purifier. It measures PM2.5 (µg/m3), PM10 (µg/m3), Particles (per/L), and HCHO (mg/m3) in the air, and also calculates the AQI. You can read more about our testing methodology here. | ||
| Filtration Technology | Pre-Filter, Ray-Filter, UV-C Light, and Sterionizer | Pre-filter, True HEPA Filter, and Activated Carbon Filter |
| Filter Replacement Indicator | Yes | Yes |
| Filter Life | 6 months | 9-12 months |
| Power Consumption
Power Usage Summary: Our extensive testing of 67 air purifiers revealed the following power consumption insights:
Check out our power consumption calculator tool. | 34W | 50W |
| Operating Costs Ratings Operating Costs Ratings Score Summary: 9.1 - Average Score (67 products) 10 - Best Score (2 products) 8 - Worst Score (1 products) We measure the power usage at all speeds using an energy meter, after which we calculate how much it would cost to use the device at a particular fan speed for one month. For reference, we use an energy price of $0.12 per kWh. You can read more about our testing methodology here. | ||
| Number of Fan Speeds | 3 – Silent Mode, Low Mode, and High Mode | 4 – Speed 1, Speed 2, Speed 3, and Turbo Mode |
| Air Quality Sensor Air Quality Sensor Summary: Out of 67 air purifiers tested, only 31 have the air quality sensor. | Yes | No |
| Air Quality Indicator | Yes | No |
| Auto Mode Auto Mode Summary: Out of 67 air purifiers tested, only 32 have auto mode functionality. | Yes | No |
| Smart App Smart App Summary: Out of 67 air purifiers tested, only 20 have smart app functionality. | Yes | No |
| Voice Control Voice Control Summary: Out of 67 air purifiers tested, only 20 have voice control functionality. | Yes | No |
| Other Features | Wall-Mount | Control Panel LockTimer |
| Noise Level (low – high) | 42.2 – 63.3 dBA | 41.2 – 53.7 dBA |
| Noise Ratings Noise Ratings Score Summary: 9.3 - Average Score (67 products) 10 - Best Score (1 products) 8.2 - Worst Score (1 products) We use a special noise measurement tool to test the noise level of the air purifier at all speeds. We measured the noise level on the dBA scale. You can read more about our testing methodology here. | ||
| Best Suited For | Portable Use | Living Rooms Bedrooms Kitchens Allergies Neutralizing VOCs Dust Mold Quiet Operation |
| Warranty | 1-year | 1-year to Lifetime |
| In-Depth Review | Aura Air | Alen BreatheSmart FLEX |
| Price | Check Price on Amazon | Check Price on Amazon |
Particle Removal Test – Comparison
These two air purifiers cover almost identical room sizes. The Alen FLEX covers rooms of up to 300 sq. ft. (28 m²), while the Aura Air covers rooms of 325 sq. ft. (30 m²).
This information makes it easier to test them in the same room size and compare the results. I placed these two air purifiers in separate tests in a 560 sq. ft. (52 m²) room and measured their performance.
Particle Removal Tests - Comparison
We placed the Aura Air and Alen FLEX in two separate tests and measured their performance using the Temtop laser particle meter.
In 60 minutes of operating at maximum speed, the Alen FLEX managed to improve the air quality by 94%, while the Aura Air improved the air quality by about 78%, which is a drastically lower result.
It’s true that the Alen FLEX uses higher quality filters, but since the Aura Air has a slightly larger coverage, I expected it to achieve a much better result than it did.
All in all, the Alen FLEX is the real winner here and a much better-performing air purifier than the Aura Air.
Smoke Box Test – Comparison
Considering their specifications, the Alen FLEX and Aura Air seem equally powerful. However, we confirmed this in many tests.
The key factors for the faster performance of the Alen FLEX in this test are probably the much better filter and much better airflow.
The Alen FLEX needed 32 seconds to remove all the smoke from the box, while the Aura Air needed 52 seconds.
This difference is significant and further confirms the Alen FLEX’s superiority.
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