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Sentinel X200 Boiler Descaler

Product Code: 43140

1Ltr. A unique, life-long system treatment for the elimination of limescale and boiler noise. Reduces fuel usage. Safe to use in all types of indirect central heating systems. Non-acidic.

  • Restores Boiler Efficiency
  • Eliminates Kettling
  • No Need to Flush - Stays in System
  • View more information

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Safety Data Sheet (COSHH)


4.4 5 10

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Sentinel X200 Boiler Descaler 4.4 5 10 10
Works well Our boiler was tripping the thermal cutout and was only able to run a 15 minute on 15 minute off duty cycle because of it. I suspected it was choked with limescale and wasn't able to transfer the heat properly so I put a litre of this into the six radiator system and left it to work. At first it seemed to have had little effect but after a few weeks it had really made a difference, now the system can run for a good hour and a half without issue. Not exactly cheap but well worth it for the ease of results. 28 Feb 2015
does the job !! I have used this many times, it is very good at reducing kettling noises in older boilers 3 Jan 2015
Worked a treat My 20 +yr old boiler was kettling like mad - probably because recent system drain down and refill brought in loads of fresh hard water . Wasnt convinced that this would do any good but noticeable improvement after just 4 or 5 days. After about 2 weeks its now really quiet. £19 well spent. 17 Dec 2014
Top product. Used on my old system and it's back to full working order. I did use two litres to make sure, for £38 it was a cheap cure. 8 Nov 2014
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Brand Sentinel
Model No X200
Pack Size 1
Product Type Boiler Descaler
Sealant Adhesive Volume 1 Ltr
Total Product Weight 1095 kg
Volume 1 Ltr