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 service up to 3 working days: €8.95

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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€17.45 Incl. 23% VAT

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Sentinel X100 Central Heating Scale Inhibitor 1Ltr is rated 4.8 out of 5 by 204.
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
Rated 4 out of 5 by from Trusted Product I have used this product for years without any problems so stick with it. Would have been 5 stars if less expensive compared to other makes.
Date published: 2018-04-17
Rated 3 out of 5 by from sentinel inhibitor Renewed 2 x Radiators so needed to put some inhibitor in the system on completion. This was on offer when buying radiators so seemed like a good buy.As it goes in the tank I have absolutly no idea if it works ok. However having seen the sludge that came out of the old radiators it certainly wont do any harm.
Date published: 2018-04-15
Rated 4 out of 5 by from Ok I have put the inhibitor in This inhibitor came at a special price when I purchased a new radiator. I put it into the central heating system via the towel radiator in the bathroom after watching a youtube video on how to do so. OK, so I have put it in, now what? how can you tell if it is working I don't know.
Date published: 2018-04-10
Rated 5 out of 5 by from The only one I trust Always used sentinal and never had a problem. Our boiler had this put in 13 years ago and I've seen no reason to use anything else.
Date published: 2018-04-07
Rated 4 out of 5 by from Fine Seems perfectly fine to me, decent price very fast delivery
Date published: 2018-04-05
Rated 5 out of 5 by from INHIBITOR Sentinel Inhibitor/Protector x100. Just bought this when ordering a new radiator. The X100 was on a deal with the rad`. Great price. Been buying this product a long time and have faith in it. Pity the offer was for one only.
Date published: 2018-04-02
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