Hi, my boiler bangs when it comes on and someone said it was sludge build up in the heat exchange.
I have a sealed/pressurised system. And was going to inject into one of the rads some stuff called System Silencer?
Should I do this and do I need to drain and refill the system after its been in there for a bit, or does it stay in the system?
I have never drained a sealed system - is thiis simple or do I need the experts...
I have a sealed/pressurised system. And was going to inject into one of the rads some stuff called System Silencer?
Should I do this and do I need to drain and refill the system after its been in there for a bit, or does it stay in the system?
I have never drained a sealed system - is thiis simple or do I need the experts...