Dyson Pure Cool Advanced Technology: Critic's Review

RAAJVIR VIJAY
Dec 1, 2020
5 min read

Updated: Dec 7, 2021

The sleek, new tower and desk purifiers, from Dyson, are equipped with a potent HEPA filter and the brilliant bladeless tech. Just an over-engineered fan, or should it be in your house. Well, let me answer that for you.

Dyson has gained a healthy reputation from the public thanks to the amazing vacuums they make, but this time around, they have attempted to revamp their line of bladeless fans and make them mainstream. Introducing the Dyson Pure Cool Air purifier. After a lot of research done by the scientists over at Malmesbury, they have found that the average house, is more polluted than the outdoors. 5 times dirtier, to be more precise. The impurities present are mostly in these sizes: PM 0.1, PM 10 and PM 2.5. And for those who are wondering, one PM is 0.000,000,000,001 meters. And, the Pure cool can catch them all.

Bold claims, but the fact that it houses a thick HEPA filter and a Carbon filter, can justify it.

How it works

First, to understand how a bladeless air-purifier works, we need to understand how a bladeless fan works. It's quite ingenious actually. Using a combination of clever physics and aerodynamics it “multiplies” the air it sucks in, so uses less energy and generates less noise in the process. It sucks in the air through the base via a motor attached to a fan with asymmetrically aligned blades which pushes air through a set of stationary blades that smooth the airflow. The air is then directed up into the hoop-like tube at the top of the device where it’s forced out of a circular narrow slit running around the hoop. As you can see, the air intake is quite large, but the exit is just a thin strip, and therefore the moving air is further accelerated as it is squeezed through the slits. Furthermore, the fast-moving air causes low pressure behind it and thus causes even more air to move through the hoop towards you.

A bladeless air-purifier is similar, but with a beefier motor, a larger intake, and more powerful blades. These are needed to pull in the air through the high-resistance filters.

The filters in the Pure Cool are slightly different from the previous versions. Instead of a single, circular filter, the new ones have 4 different filters in total. There are two sides, where there are two filters for each. Each side has a semi-circular shaped HEPA filter and a carbonic filter.

The HEPA filter is a really dense fabric that has been folded up. In this case, it has been made of 9 meters of borosilicate microfibers, pleated over 238 times. It can catch up to 99.95% of ultrafine particles.

Behind it is the Activated carbon filter, which consists of a dense layer of carbon crystals, which are treated with oxygen to make it more porous. This increases the carbon's surface area, further helping to trap gases – such as formaldehyde, benzene, and NO2.

As a whole, the filter system can capture up to 99.95% of ultrafine particles as small as 0.1 microns. It can also stop odors, scents, and other chemicals. The carbon filter stops the VOC.

They also clasim that people currently having lung-related illnesses such as asthma or dust-allergy can vastly improve their health if they use their purifier.

Review

The setup of the fan is relatively straightforward. Once you open the box, you will find the filters, the filter covers, and the base, with everything else attached to it. You then just have to plug it into a wall socket, and the fan will start running. Using the supplied remote controller, you can control almost every function of the Pure Cool.

But to unlock the automation, and remote operation features, you have to set up the phone app. That is also pretty simple: downloading the app, connecting both to the same wifi, and that's pretty much it. In the app, you can set the auto on and off functions to, say, switch it fifteen minutes before you come home, perhaps.

The air purifier by itself is not very loud, and in fact, I couldn't even hear it if wasn't deliberately trying to listen to it. But, when you need some air to blow towards you and turn up the fan speed, it definitely gets louder. Moreover, if you place it quite far away from where you are sitting, you really need to increase the speed, and as you go over 7, it gets really loud. If you don't want air to be blown into your face, you can activate the diffuse mode, which releases the purified air through slits facing away from you.

The built-in display is actually quite informative. It shows you the real-time air quality, the PM 2.5 dust levels, the PM 10 dust levels, the VOC levels, the NO2 levels, humidity levels, ambient temperatures, and allergen levels-all as graphs or numbers with level indicators. As you might expect, there is also an Auto mode, which takes care of fan speed based on the factors of the environment. You can also activate the Night Mode setting to dim the display down, set how long it should run, and reduce the fan speed. All of it feels thoughtful -- and appropriately high-end, given the price.

The display shows you the real-time air quality, the PM 2.5 dust levels, the PM 10 dust levels, the VOC levels, the NO2 levels, humidity levels, ambient temperatures, and allergen levels-all as graphs or numbers with level indicators.

The whole base can also rotate up to 350 degrees, cooling and purifying the whole room equally. You can set the rotation as 45, 90, 180, 270, and 350 degrees, based on preference

Fun Fact: While Dyson purifiers are scientifically-tested to capture particles as small as allergens and viruses, they don’t speak about their performance against the COVID-19. Nevertheless, according to Dr. Michael Hall of Hall Longevity Clinic, less dust in general means less dust for bacteria and viruses to attach themselves to reducing their mobility and the chance of these damaging particles entering your respiratory system—thereby protecting you from infection. As the Dyson can catch up to PM 0.1 particles, about 50% of the particle spectrum is covered, and therefore 50% of the covid particles will, theoretically, be caught. Nice.

While Dyson purifiers are scientifically-tested to capture particles as small as allergens and viruses, they don’t speak about their performance against the COVID-19. Nevertheless, according to Dr. Michael Hall of Hall Longevity Clinic, less dust in general means less dust for bacteria and viruses to attach themselves to reducing their mobility and the chance of these damaging particles entering your respiratory system—thereby protecting you from infection.

At 45,000 rupees, the Dyson Pure Cool Advanced Technology is appropriately fancy and full-featured and is demonstrably better at its job than air purifiers or tower fans that cost significantly less. The core job of blowing air, or cleaning the air-can be managed by some other products too, but the extras are what makes this one special. Like most things at Dyson, the in-house performance claims are the product of good engineering. That leaves it to the high-end design and the awesome extra features to really justify the sky-high asking price. If you have a respiratory issue or really value your health and want to have the absolute best air-purifier you can get with all the gizmos there is, this one is for you. But if you just want a good old bladed fan or an air-purifier that just does its job, there are better options that are way more pocket-friendly than this.

At 45,000 rupees, the Dyson Pure Cool Advanced Technology is appropriately fancy and full-featured and is demonstrably better at its job than air purifiers or tower fans

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