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Hi, I'm looking for some advice and hope someone can point me in the right direction. We had a loft conversion a few years back and the plumber who worked on it put in two radiators up there. They work OK but last year we noticed a couple of downstairs radiators were not heating up at the bottom. I shut some radiators down to try and force it but no joy so I assumed they were blocked with sludge (?) and replaced them both. One was only a single panel and the room had always been a bit cold (north facing window) so I put a double in there. Once I'd put it in I bled the system throughout but struggle to get this new radiator hot. It is about as far away as you can get from the boiler etc so I guess it is at the end of the system (you can tell I am a complete amateur !). If I close down other radiators I can get it piping hot so it looks like I put it in properly. How can I get all radiators hot at the same time - do I need a better pump or is the system simply over loaded ? Thanks in advance.
