Am I right that I need to turn the boiler off.
Then turn off the water supply
Drain the water from the tap and change the washer.
Turn the water back on.
Switch on the boiler.
I have a Vaillant EcoTec pro 28 boiler I am hoping that when I turn it back on at the switch it will just start working without me needing to light a pilot light.

Clare, January 2009

Thanks! Same boiler - just changed tap washer as per above and all good - no more drips and hot on tap!

AliStar, September 2013

You don't have to turn the boiler off. Just turn the cold water supply off at the stop cock. open the hot tap to drain water in the pipes. Change the washer in the normal way. Turn the water on! Job done

Daddy Popps, April 2010

I've got the same boiler and what you have written will work

Ian, February 2009