rads

Hi all, Speccing some rads for a flat renovation and need to order rads ASAP as plumber just become available. On a budget but will pay where needed. I want to buy white column rads that are good value from somewhere I can easily return if needs be. Gathered quotes for the specs I need and I'm...

No really apparent close to the boier, but the noise comes from the pipes and rads all over the house. Is it possible to alter the speed of the pump and get rid of the noise that way? Or is it just what they do? I remember other pumps making a noise but they were a low, deeper hum, this noise...