If it's not the brush-bar....there's a couple other options.
If you can- check inside the root cyclones- they were notorious for blocking at the non-pointy end.
Also check the motor bleed valve- if the spring weakens they can partially open, causing a whistling sound.
The filters are 'washable' but in reality are not 100% recoverable.
Tayyab is correct that carbon from the motor is part of the filter loading- and this stuff cannot be removed however well you wash it...it actually bonds to the filter media.
I personally wouldn't run a machine without the...
AW and performance
I would expect this is mentioned elsewhere, but AW doesn't directly relate to cleaning performance- it is a measure of pure suction, which is only of relevance for what you feel when you put your hand over the hose.
Flowrate with the tools on the floor is key for pickup (and...
Sorry where my last post says 'DC44mk2' it should read DC41mk2.
Hope you got what I meant!
Just saying unless you really want to save the bother of servicing filters, the other non-cinetic machines are better product offerings.
Thanks Turbo500 and dys0nb0y.
Apologies dys0nboy- I thought DC55 was the name Dyson gave the cordless V6 (DC55 looks to be a rehash of the older DC41 Mk2 with a red spray can for currys). Yes you are right it is 700w on the DC55. The 'V6' motor on the cordless product is 350W.
Both cinetic and...
The Dyson cinetics are actually less good at pickup than Dyson's other corded products. The cinetic cyclones are more restrictive than 'normal' cyclones to achieve the efficiency to allow removal of the pre-motor filter.
If you are looking UK machines, the EU label is actually fairly accurate...