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Central heating system cleaner.
Removes commissioning and flux residues from new systems and restores circulation to old systems which suffer from sludge.
Full instructions included with product.
Central heating system corrosion inhibitor / protector.
One litre is sufficient to treat a typical domestic central heating system up to 10 radiators or approximately 70L capacity.
500ml Fernox F4 central heating system leak sealer, seals most weeps and small inaccessible leaks.