Recent content by Pineapple123

This is probably the point at which I've reached my limitations as a layman! Our boiler is 19 years old so we were already considering whether to replace it, so would probably include a new pump at the same time.

That's correct, all other rads remain piping hot. If I bleed the radiator in question a few days later the cold patch starts growing starting at the top left. Based on location I'd say it's the highest point in the system.

Any thoughts from anyone else? I spoke with a central heating engineer and they suggested trying a silicon based sealant product they can add via the header tank that may or may not help.

Nothing on the radiator and no noticeable wet patches (near the radiator in question)

Hi, I have a radiator on the top floor of my home that keeps getting a cold patch a day or so after bleeding it. It starts top right and slowly moves across the rad. Any thoughts or suggestions of anything else I could check before I call on a heating engineer? Air must be getting into the...