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Sentinel X100 Central Heating Scale Inhibitor 1Ltr Product Code: 79683

General purpose treatment for total protection against scale and corrosion. For use in all types of indirect central heating systems, including those containing aluminium. Non-acidic.


  • 1 Year Guarantee
  • Ensures Optimum Boiler Efficiency
  • Protects against Pin-Holing
  • Non-Staining, Colourless Formulation
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Safety Data Sheet
Additional Information
Technical Specification
  • Brand : Sentinel
  • Sealant Adhesive Volume : 1 Ltr
  • Product Type : Central Heating Scale Inhibitor
  • Volume : 1 Ltr
  • Model No : X100
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


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€16.95 Incl. 20% VAT

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Sentinel X100 Central Heating Scale Inhibitor 1Ltr is rated 4.8 out of 5 by 210.
Rated 5 out of 5 by from Used for many years I've been using this product regularly for nearly 15years in my central heating system and my boiler is still working perfectly.
Date published: 2018-07-15
Rated 5 out of 5 by from The Best Great protection at a great price - when I bought the last one it was on an offer with a combined radiator purchase but the price Screwfix sells it as normal is still good value
Date published: 2018-07-04
Rated 4 out of 5 by from does what it says! used this once before and worked great, and seems like good value too.
Date published: 2018-07-02
Rated 5 out of 5 by from Good old Sentinel Used Sentinel for many years. Very reliable and does the job very well
Date published: 2018-06-25
Rated 5 out of 5 by from Excellent Item Always used this product, never had any issues with the system, so it appears to be working
Date published: 2018-06-22
Rated 5 out of 5 by from Can't beat it I've always used Sentinel x 100 for my combi boilers, It gives you the best protection for a good price.
Date published: 2018-06-22
Rated 4 out of 5 by from Time will tell. Easy to use. Have used this in a previous property and I believe it was effective.
Date published: 2018-06-02
Rated 5 out of 5 by from Best inhibitor Great stuff . This keeps the inside of your heating system very clean but i do always add minimum of 2 bottles every 3 years after a flush through with cleaner . you can never add too much.
Date published: 2018-05-12
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