how can I change the hose on my Dyson dco7?

You can buy a new hose directly from Dyson from their website. It comes complete with the top and bottom plaastic fittings already attached. The top end simply slides off the metal tube until it reaches the end and is then released by pressing the blue button at the side. The bottom end is attached to the base by a clip located behind the hose. pul the catch towards you to release the lug at the back and it simply pulls off. fitting is the reverse of removal

John Evans
May 2004