Recent content by sand100

I have now partitialy drained the system and added Sentinel X100 & Sentinell X200 noise reducer, then refilled the system, now after a few days the niose has almost disapeared. Also a hissing from one the TRVs has stopped. Good outcome. :lol:

I had new Grant 50/70 standard (external)oil fired boiler fitted to an existing system a year ago. When the boiler reaches temp there is a hissing bubling noise just before the boiler stat cuts out ,the noise tranfers through pipework to pipes inside house. The boiler stat is set just above...