I have just hung a new rad on the other side of the room to replace an old one. I connected the pipework to the rad that was on the other side of the wall and after testing for leaks filled the system and turned on the boiler.Now all the upstairs rads work and some of the downstairs, BUT the pipework for the rads that i have been working on go into the loft right across the other end of the loft and down to these rads.It is hot half way across the loft then cools down before it even gets to the end of the loft.
Can anyone tell me where i am going wrong.
Can anyone tell me where i am going wrong.