I have an Ariston boiler that keeps loosing pressure there are no leeks but when the heating is on its ok but when it switches off and requiers yo come on in the morning it has no water in it .. what do you think i can do .. looked around but no water leaking out ..

ian, December 2012

You need to check the Prv ( small copper pipe which goes outside from the boiler) sometimes this leaks. If there is absolutely no sign of water there, I would recommend getting an engineer as there may be a small leak within the boiler casing that is as of yet undetectable.

Paulo B, December 2012