My partner re-pressurised the boiler system following a water company switch off and forgot which way he had turned the tap. The pressure is now showing at level 5 and in the red. The heating system keeps switching its self off and now we have no hot water coming from the electric shower due to a fault regarding pressure. Please can you advise?

Kathryn Bowden, January 2008

The easiest way to reduce your water pressure is to open a bleed valve on a radiator and remove the water from there. It takes a little time but it does work. Another way is to undo one of the radiator valve nuts but water comes out wholesale and is more difficult to catch.

John, January 2008