Our Score



  • Smooth airflow does feel nice
  • Fine control over power
  • On lowest setting it create a really nice gentle breeze effect
  • Well built


  • Very expensive
  • Noisy
  • Ultimately not that powerful

Review Price £170.00

Key Features: 'Bladeless' fan design

Manufacturer: Dyson

Need a bigger fan? Check out the new Dyson AM02 Mini Tower Fan

Dyson Fan Air Multiplier AM01 - Introduction

Famed for revolutionising the vacuum cleaner market via the appliance of science, Dyson turned its hands to the humble desk fan a few years back and came up with a suitably intriguing take on the design of the Dyson Fan. Called the Dyson Air Multiplier AM01, it forgoes a big fan blowing air directly at you but instead directs a constant stream of air through a large hollow ring, with the aim being to prevent buffeting – that pulsing effect you get from conventional fans as they chop through the air. It's clever stuff.

So, with summer just about with us at last we thought it was high time we put Dyson's many claims about the Air Multiplier to the test.

Dyson Air Multiplier AM01

Dyson Fan Air Multiplier AM01 - Design and Features

Straight out the box, you're immediately struck by the same signature perfunctory elegance that typifies Dyson's vacuum cleaners. The Dyson fan is all plastic but it's solidly built and the simple colour schemes work well.

However, the AM01 lacks the innards-peeping clear plastic, weird and whacky accessories and various modular sections that the Dyson vacuum cleaners have, making it feel a little less, well, fun. This you just plonk on a sideboard or table and turn on, job done.

Well, not quite job done. You've got to choose your angle of tilt, whether to have the fan rotate back and forth, and what power level you want.

The first of these is controlled in a slightly odd manner. Instead of tilting the main ring, the whole assembly slides forward and back on the minimal base. The action works reasonably well, certainly compared to the equivalent adjustment on many cheap fans - you can just about do it with one finger, but is still a bit stiff and awkward. Moreover, you can't tilt the fan to 45 degrees and use the base as a wall mount, as you can on even the most basic standard fan.

Dyson Air Multiplier AM01

Dyson Air Multiplier AM01

As for auto-rotating, there's a little backlit button on the right that sets the thing going on a 45 degree arc back and forth.

To the left of this is the power dial. The fan is rated to shift up to 33 litres of air a second, which isn't actually all that much - it's about equivalent to a kitchen extractor fan. In comparison a conventional similar size desktop fans will shift up to double this. But, it's plenty enough for normal household use and, crucially, with that dial you can fine tune the speed to be just right.

This is particularly useful as noise is something of an issue with this fan. Even from a relatively low setting, the high speed fan that sits at the heart of the Air Multiplier is still quite audible. Starting off as a gentle whooshing sound, it ramps up in pitch and volume until it's quite distracting. It's not drastically worse than a conventional fan but it's certainly no better either and by using that dial you can generally find a spot that balances power with noise.

Dyson Fan Air Multiplier AM01 - Blow Me Down

But, what of that all important buffeting and the cooling performance?

First, a quick bit about how the fan works. It uses an impeller (a fan contained in a tube/conduit) to suck in air through the grilles on the fan's base then blasts this air through a thin gap that runs round the inside of the big ring. This fast moving air creates an area of low pressure inside the ring which draws in further air from behind (inducement) then as it flows out through the front it further draws more air in (entrainment). Dyson calls this effect air multiplying, though any suggestion it's actually creating something out of nothing is bunkum; as mentioned above it's just more efficient than a standard fan thanks to clever aerodynamics.

Dyson Air Multiplier AM01

The result is a stream of air that feels continuous rather than chopped up like with a conventional fan. Dyson reckons this buffeting is uncomfortable, but we can't say it's something that has ever bothered us in the past, and the Air Multiplier hasn't in our eyes set a new benchmark for airflow comfort.

Dyson Air Multiplier AM01

That said, particularly on the lower settings, the constant feeling of a gentle breeze beats the sort of result you get from a conventional fan running at slow speed.

The airflow is also much more directional and with a longer range. Where a normal fan looses its effect from a few feet away, the Air Multiplier still does its thing from metres away. What's more, step away from being directly in front of the fan and there's a surprising drop off – it really is like a column of air shooting out the front. There are arguments for and against this highly directional performance, but it does mean you can control air flow that much more easily.

Another advantage of this design is that it means there are no enormous spinning blades that inquisitive fingers could get bashed by. And, you can shoot balloons through the middle!

Dyson Fan Air Multiplier AM01 - Verdict

Sadly while we're impressed by aspects of the Air Multiplier, it is phenomenally expensive. At around £170 it's a good five times more expensive than your average desk fan, and we can think of few situations where it really outperforms these fans – balloon firing excepted. A two year warranty is worthy of note, though with it being a desk fan, it's unlikely to take too much of a beating and thus require repair. That said, it just about holds enough caché through its design and rarity that those with money to burn may find some joy in having one, just because they can.

Scores In Detail

Build Quality

Our Score



June 27, 2012, 1:30 am


Ha ha. You guys ARE funny.


June 27, 2012, 4:18 am

I bought an almost identical one on ebay or dx, and it cost £30.


June 27, 2012, 2:13 pm

Was it a Dyson reduced in price, or a different make, as I thought this design was exclusive to Dyson (and knowing Dyson, it's probably heavily patented to stop copycats)?


June 27, 2012, 3:18 pm

I'm not a fan.


June 27, 2012, 3:44 pm

The only copy I know of is a totally knock off Chinese version that's not readily available. Would be interested to know if a legit cheaper version cropped up.


June 27, 2012, 4:00 pm

I tried one. It didn't blow me away.


June 27, 2012, 4:11 pm

I have both the Dyson and the Ebay one (hey I love my gadgets and the Dyson is still cheaper than an AC unit), but the Ebay one is just a joke really.

It looks similar from the outside, but inside it's a CPU cooler fan blowing air into a badly designed ring.

A lot of the Dyson's effectiveness relies on the shape of the output ring (the airfoil as they call it) but that means build tolerances beyond your typical £15 fan and yes probably patented to the micron .

June 27, 2012, 4:14 pm

The best of this is really the lower speeds, where you feel a gentle breeze that is unmatched by any traditional fan. Very refreshing.

For some reason my cat loves jumping through the hoop too.


June 27, 2012, 7:32 pm

I imagine a bucket of soapy water could turn it into an awesome bubble blower. Anyone care to stump up the cash (and risk electrocution) to find out? Your warranty may be invalidated.


June 27, 2012, 9:44 pm

I don't suppose it multiplied your cat? That would be worth writing home about.


June 28, 2012, 5:54 am

Just had a look on eBay and it seems there 's a small but substantial market for Dyson Air Multiplier knock-offs, mainly sourced from the far east. I found them while searching for bladeless fans on eBay. You can get USB ones for under a tenner from Hong Kong with free shipping...

Although I'm quite sceptical as to how good these knockoffs will be, as seems to confirm in another reply.


July 15, 2013, 1:52 pm

the cat would be both multiplied and unmultiplied, until observed it


July 15, 2013, 1:53 pm

not funny anymore!


July 18, 2013, 5:47 pm

My Wife bought the larger room version from Dyson. At £400 or thereabouts I was expecting some cool air and a better looking thing than an upright fan. It scores on better looking and thats it. Its noisy and provides a nice warm draught of air when I was expecting a nice quiet cool breeze. It gets returned tomorrow.If I want a warm breeze I'll get a fan for a fraction of the cost. Not recommended and the price is a joke.


January 24, 2014, 10:41 am

I purchased two AM 01 units in December 2012. One used in each of my two occupied bedrooms and running through the night pretty much all year. One failed within 4 months and a replacement unit was sent to me (without a serial number). The replacement unit and the original second unit failed in December 2013. Both were hand delivered to the Dyson Service Centre on December 27th. A month later, 2 units arrived back at my home today. One was filthy, the other was the unit without a serial number. I'll be returning them to the Service Centre tomorrow for explanation but if unsatisfactory, I'll be returning the units to the point of purchase and demanding a full refund. The two Kambrook fans I purchased on December 28th 2013 for A$39 each are working a treat. I'll never buy or recommend a Dyson product.


August 12, 2014, 1:37 am

The problem with fans, all fans I should say, is their ability to cool relies on circulated cool air. It doesn't matter if you have a $20 fan or a $600 fan, if the room is warm and there is no cool air coming in from outside, the result will be the exact same.

The only thing these dyson fans are good for is Aesthestic looks.

If you have $200-$600 to spend, get a portable air conditioner (or 2), it will work far better than any dyson fan ever will.


October 20, 2014, 12:14 am

While the tech is interesting and looks good in a modern apartment / home, it fails in terms of performance and price compared to traditional fan. You can get a high speed blade fan from a good brand for $50 and get double performance compared to spending $300 on this and getting half the performance.

If you're strictly after good looks and hate the way blade fans look in a house, then i would shell out $300.

It isn't getting much cheaper either due to low demand (caused by its poor performance)

The cheap chinese knock-offs are useless so avoid them entirely, stick to Dyson.

Gavin O'Connell

November 6, 2014, 7:11 pm

if it's anything like as bad as their over-priced hoovers the knock-offs will be preferable. they might even work more than once

Rock Halliday

September 28, 2015, 12:13 pm

Who would be dumb enough to pay more than $300 for a fan when you can get a room air conditioner for that price...? Totally absurd!

comments powered by Disqus