Mine is now about 2.5 years old and somehow I felt like the suction of the vacuum was not as good any more as it used to be. Turns out the comment section here is chocker block full of people complaining about the same issue. Each one of those comments gets answered by Dyson telling the commenter to get in touch with Dyson. So here is what happened with mine: A loss of suction is of course hard to determine, because how do you measure the suction in the first place and how do you know that it is now less than when you bought it? One giveaway for me was that the turbo head brush was just not spinning very fast any more. I remember it sounding like a jet engine and spinning impressively fast when the vacuum was new, and that at some stage was just not happening any more. That can of course have two totally different reasons, one being the suction having dropped, the other being the rotating brush is not freely rotating any more due to - well whatever reason (bearings, blockage ...). Turns out in my case BOTH causes came together. I suggest the first thing you do is check whether your suction hose has any blockage in it (as per the trouble shooting guide on the Dyson web page). Blowing through it I can promise you does not tell you whether a constraint is in the hose or not. Take the hose off on both ends and look through it. Then take the hard extension that attaches to the head and check that. Most importantly, take the hard plastic U-turn bit (where the handle is attached) and check that one out. I uploaded a picture. It is the part on the left that I am talking about. In my case, that U-turn was the culprit. A piece of cardboard had gotten stuck in the U-turn part and a massive amount of hair and fluff had accumulated over time around that stuck cardboard. It was not easy to clean out by the way, I used a bent wire coat hanger and freed it all up. The different was huge as you can imagine, but my turbo brush still was not spinning fast enough. Youtube to the rescue. I donlt seem to be allowed to post external links here (Why Dyson?). But search for "Dyson Vacuum Turbine head Teardown and Clean". Most importantly, read the comments in the video because they explain how to get past the point where the presenter in that video actually got stock. The part he holds at around 07:00 in the video needs to be opened further (and he did not manage to get in there). The trick is that the little cork twisty bit does in fact come off when you take the screw that is INSIDE the cork screw bit out. Look at the picture I uploaded. Once that screw is out, you will find that a hair and dust mixture has accumulated in that bearing despite it being a sealed unit. Clean it out, put it all back together and it will all be as new. You will need a T8 and a T10 screw driver - and admittedly, that is not in everybody's kitchen drawer. There is always the alternative that you swing by a Dyson Service Centre (in Sydney they are in Taren Point). I have done that twice in the past and every time I was very happy with the service they gave me (super helpful and free both time despite being way out of warranty). I think they also offer a pickup service, just ask. I hope this helps solve some of the frustration I see accumulating in here. Good luck with it. Love this vacuum - again.

I am a cleaner and use various vacuum cleaners, this is THE WORST I have ever used. Little to no suction on carpets and hard floor surfaces the dirt is just scattered and not sucked up, it is quicker and easier to sweep the floor. Do not waste your money.

Do Not Buy This Vacuum! It is the worst. Oh, it may do a good job for the first few months and then it will start to loose suction. You will find yourself vacuuming over the same spot literally ten times before that section of carpet looks "cleanish". The brush will stop rotating, so you'll buy another brush. The new brush bristles will be worn out in a month and the brush still won't turn by itself. Dyson will say that they are very sorry for your experience and it's not what they expect from their vacuum (despite hundred's of poor reviews here). They will tell you to go through the trouble checking wish list -but that cannot change the fact that this is a very poorly designed machine. It needs a changeable filter... and no troubleshooting it going to fix that. If you buy this vacuum, you will literally be throwing away a large amount of money. Learn from the experience of others here, DO NOT BUY THIS VACUUM!