What causes boiler noise?
Knocking and kettling are usually from limescale and sludge building up on the heat exchanger, which reduces heat transfer. PC600 breaks that down.
Do I have to flush it out?
No, PC600 stays in the system for life, so there is no need to flush it after dosing.
How long before it works?
It is drawn into the system over up to 6 weeks. Bleed the radiators after a few days and again after a few weeks, by which point the noise should be much reduced.
Should I prepare the system first?
For best results pre-treat with PC400 Flushchem, then add a PC100 or PC200 inhibitor, before dosing Noise Buster.
How do I add it to a combi?
Add it to a partially drained radiator on combi systems, or the feed and expansion tank on open systems.
Does it help running costs?
Yes, by restoring heat transfer it can reduce fuel use and help extend the boiler's service life.