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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
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Safety Data Sheet (COSHH)




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Rated 4 out of 5 by 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
Rated 4 out of 5 by does the job !! I have used this many times, it is very good at reducing kettling noises in older boilers 3 Jan 2015
Rated 5 out of 5 by Sentinel X200 Quality product used on its own with a power flush or added to the system with X100, brings a scaled/blocked boiler back to life ( unless the boiler is beyond repair), I personally wont use any other product. 17 May 2014
Rated 4 out of 5 by ok but The product is ok but you need to be patient as it take a few weeks to work found the rapid dose to be easier to use. 1 Apr 2013
  • 2015-10-07T22:59:44.690-05:00
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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