Radiators constantly filling up

[Moonboy]

Hello, I have just had a new boiler with Google Nest installed the engineer was great and explained how it all works but now my radiators soundike they are constantly filling up I have bled all the rads with only water coming out all rads have TRVS installed apart from the bathroom towel rad which is the one that sounds like it is constantly filling up could there be air trapped somewhere in the system any advice on this would be much appreciated thanks

 

[cjg]

give it a few days to settle down, then bleed all the rads. see how that goes,

 

[PETE 123]

I would think its the sound of high speed water running round rads explain to installer maybe pump speed to high or by pass needs adjustment.