john51 wrote:

I recently changed all the rads on my heating and fitted TRVs to all
but one. I had a CORGI installer fit a WB Greenstar 30 CDi system
boiler. When most of the TRVs close, the system now makes really loud
noises in the lounge rads (2x4kw) due to high water flow rate. I

telling us what kind of noises would help


NT