Radiator noise

[spammed]

Last week I had a new boiler fitted. Its external and no controller fitted yet so I have to switch on/off at wall.. whenever I adjust TRV I can hear the water flying through the rads... not the bubbling noise of air just a loud whooshing noise... this didn't happen with old boiler but this one is a more powerful boiler (there will be 4 more rads coming online in the extension next week).

Is this to do with the rads not being balanced yet?

 

[JohnD]

show us photos of the TRVs. Include the little arrow (if any)

feel the pipes at each end of the rad. One will be hotter than the other. Is the hotter one at the TRV? Or the other end?

Why do you keep adjusting your TRVs?

 

[Deleted member 267285]

Was the boiler like for like, eg combi for combi?