Dyson DC42 Multifloor | Dyson DC42 upright vacuum | Dyson

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Getting started

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Using your machine

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Maintaining your machine

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Checking for blockages – cleaner head and base

Follow our step-by-step guide to check for blockages.
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Resetting the brush bar

The brush bar is designed to shut off when jammed. Learn how to reset it after removing the cause of the jam.
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Checking for blockages – wand and hose

Follow our step-by-step guide to check for blockages.

Useful tips

Safely store tools

Clip accessories onto the vacuum's tool holster so you've always got them to hand.
Wash the filter regularly

Rinse under a cold tap until the water runs clear – you don't need any detergents. Leave to dry fully (at least 24 hours) before refitting.
Don't overfill it

To maintain suction, keep an eye on the bin and empty it as soon as debris reaches the MAX marker.

User guide

Check your user guide online or download a copy.

PDF 2.81 MB

Frequently asked questions

How often do the filters on this machine need washing?

We recommend that you check both of the filters at least once every 3 months. You can find filter maintenance instructions in the machine's user guide.

Can I use this machine with an extension cable?

No, the use of an extension cable is not recommended.

Can I use this machine to pick up liquids?

No. Don't pick up water or other liquids with your machine.

Tools to tackle more

Groom tool

Groom tool

Part No. 921001-01

Comfortable, mess-free grooming for medium- and long-haired dogs

Currently out of stock.

$83.99

See more
Articulating hard floor tool

Articulating hard floor tool

Part No. 920019-01

Soft nylon bristles gently remove dust. Ultra-slim profile reaches into awkward gaps.

Currently out of stock.

$59.99

See more
Up-top adaptor

Up-top adaptor

Part No. 917646-01

Multi-angle brush tool makes high-reach cleaning easier

$41.99

See more

The Dyson warranty

'How to' videos

To help you get the most from your machine. Quick and easy.
Helpful tips

Tailored reminders that will keep your machine working at its best, for longer.
Exclusive owner benefits

Priority access to previews of new Dyson technology, events and offers.
Expert advice. 6 days a week.

Freephone and live chat. The right advice for your machine, from real Dyson people.
Free Dyson parts

Replacement parts if something goes wrong during your warranty period.
Hassle-free replacement

If we can’t repair your machine, we’ll replace it while it's under warranty.

We don’t stop caring about our machines once they’re yours. Activating your warranty allows us to give you a tailored, direct service for your machine. Even after your warranty has ended, we’ll still be on hand to help.

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