Price (RRP): $499
Dyson has used its considerable knowledge of aerodynamics, fluid dynamics, air treatment, light sensing, acoustics and ventilation to develop the Dyson FB01 Pure Cool Me personal purifying fan.
The Dyson FB01 Pure Cool Me personal purifying fan uses a new Dyson Core Flow technology to create a steady stream of purified air and allows you to direct the airflow precisely where you need it.
It was inspired by the aerodynamic properties of the Harrier Jump Jet that Dyson also happens to own! Dyson engineers discovered that when two jets of air meet on a convex surface, they converge to create a high-pressure core and a focused stream of air.
What problem is the Dyson FB01 Pure Cool Me personal purifying fan trying to solve?
The problem is that that most of us spend 90% of our time indoors – in bed, at a study desk, in the kitchen or at work etc.
Dyson already has a solution for larger areas with its Dyson HP04 Pure hot+cool purifier/fan/heater (review here), and it’s Dyson Pure Cool series (review here) but nothing really for smaller personal spaces.
The Dyson Pure Cool Me personal purifying fan (website here) is just that – it creates a mini-oasis of purified air that you can bathe in. It is just for you.
I wasn’t too sure of its marketing slogan until I looked at my crusty Kmart fan replete with copious dirt on the cage and blades. Dyson says, “Cool with purified air. Not dirty air.” And it is right.
How we rate the Dyson FB01 Pure Cool Me personal purifying fan
We don’t have the test equipment to measure the purity of the air it produces, but we will take Dyson at its word. It says the sealed filter (borosilicate glass HEPA and activated carbon) removes 99.95% of pollutants and allergens down to .3 microns. It is the same filter as used in the Pure Cool series.
The HEPA/Activated carbon filter is good for 4380 hours (12 months at 12 hours a day).
The fan speed is from 1-10, and the corresponding noise level is from 30-60dB. Apparently at speed ten, it delivers 257 litres per second. We don’t know the efficiency of the ‘Harrier’ air multiplier, so we assume air intake is about 20lps. Based on a 1000 litres per m3 that means it can purify that air in under a minute.
We found that up to speed setting four was whisper quiet and – so much so you would not notice it. But remember the lower the setting, the lower the airflow and air intake. See our tests later.
The airflow is adjustable ‘up to down’ by about 45°. To explain if the unit were on the floor beside you, you angle the air up. If it is on a desk beside you then you angle it down. It can also oscillate 70° 35° in each direction). The aim is to create a micro-climate zone about 60cm wide by 1m deep around your head. Oscillation will extend that area slightly, but placement is critical.
I was concerned that a constant stream of air would be annoying. But you adjust the fan so that you are bathed in it – not blown away.
As it probably will be most of the time, this is a vital issue. At setting ten, it consumes 50W. Setting one is 10W and setting five is 18W. To put that in perspective (at peak rates of 50 cents per kWh) it costs between one and three cents an hour.
One of our pet hates is when any fan maker states that it cools you. No fan cools. It blows ambient temperature air on you and depending on relative humidity, and skin perspiration can help create an evaporative cooling effect.