0500 41 41 41
Cookie Reports - Screwfix Cookie Policy

View product video for Sentinel X200 Boiler Descaler View product video for Sentinel X200 Boiler Descaler

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

Download more information...

Safety Data Sheet (COSHH)


4.3333 5 9

Add to saved list

Available for deliveryNext Day Delivery
Available for collection from store Store Collection Check stock in your store
Page 1 of 4
Page 1 of 4
Sentinel X200 Boiler Descaler 4.3 5 9 9
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
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
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
  • 2015-05-22T14:29:38.283-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_9, tr_9
  • loc_en_US, sid_43140, prod, sort_default
Page : 2 next>


Download more info (pdf)

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