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Sentinel X200 Noise Reducer (1 Litre)

Part Number : H004323

£16.12 Ex VAT

£19.34 Inc VAT

Enter you delivery postcode for stock availablity.
Select a Branch to see Local Prices

£16.12 Ex VAT

£19.34 Inc VAT

Enter you delivery postcode for stock availablity.
Select a Branch to see Local Prices

Sentinel X200 Noise Reducer (1 Litre)

Sentinel X200 is a non-acid product which has been formulated for the treatment of kettling in central heating boilers caused by limescale. Unlike alternative treatments, Sentinel X200 is added to the system and left there without causing any problems. Sentinel X200 is extremely successful in reducing noise problems caused by the presence of limescale on the heat exchanger surface, and restoring boiler efficiency.

Many noise problems are caused by system design or mechanical faults. It is important to check for these before seeking a chemical solution.

Boiler noise can also be caused by sludge (e.g., iron oxide corrosion debris), in which case, the system should be cleansed with Sentinel X400 System Restorer.


1 litre of Sentinel X200 is sufficient to treat a typical domestic system of up to 10 radiators. Larger systems should be dosed with 2 litres. The time taken for boiler noise to reduce/be eliminated will depend on the hardness and quantity of lime scale present. In extremely severe cases, a further dose of Sentinel X200 may be necessary.

Sentinel X200 should be left in the system. The water should also be treated with Sentinel X100 inhibitor, or Sentinel X500 inhibited antifreeze.


Open Systems: Dose via F&E cistern, via a by-pass feeder or use a Sentinel Dosing Vessel.

Sealed Systems: If the system is empty, add to any convenient point before filling. If full, use a Sentinel Dosing Vessel to inject via the filling loop or other access point.

Features and Benefits:

  • Eliminates boiler noise "kettling"
  • Restores boiler efficiency
  • Safe and non-corrosive
  • No need to flush - stays in system
  • Appearance: Clear colourless liquid
  • Odour: Mild
  • Specific Gravity: 1.02 (20°C)
  • pH (1% solution): 7.5 (approx.)
  • Freezing point: -1.5°C

Technical Specifications

Manufacturer Part Number X200L-12X1L-GB

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