1 pipe system, 2 downstairs rads not heating up properly.

[mr_maxwell]

I have had a problem where 2 downstair radiators are not heating up the same as the rest of the radiators around the house, now previously i had an electric boiler which heated all the radiators just fine, but around a few years ago i had a gas one fitted and the radiators in the living and dining room havent been heating up like before. Iv'e had all the rads balanced as well as cleaned the whole system its still the same.

Im not sure what has went wrong, any advice would be appreciated.

Thanks

 

[ShaunCorbs]

New boilers don’t like one pipe systems can I ask why it wasn’t upgraded / re piped ?

 

[mr_maxwell]

I can't afford it at the moment, but I had one plumber change one of the rads in the dining room, he said it should heat up the room abit more however its still the same at low temps below 50c at the boiler. He did say I would have to get new piping, but I don't have the money for that sort of job now. If nothing can be done about it. I'll just leave it.