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

1Ltr. 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 185.
Rated 5 out of 5 by from Quality inhibitor Sentinel X100 is the best inhibitor on the market by far and will keep doing its job for years. I often am happy to spend a lot more for this at other merchants but at this price ... it is unbeatable.
Date published: 2017-10-25
Rated 5 out of 5 by from Does the job I put this in my central heating system every year and works perfectly, I have my system serviced by a plumber and he said it is keeping system very clean
Date published: 2017-10-17
Rated 5 out of 5 by from Great value inhibitor Drained my central heating system and purchased this to top up the inhibitor for the winter. Have been using this every year and the water when draining is quite clear every year so obviously does what it says on the tin
Date published: 2017-10-09
Rated 4 out of 5 by from Good product Well known make, not the cheapest but a good quality product
Date published: 2017-09-19
Rated 5 out of 5 by from Inhibitor Good value and availability. We used this when refilling our system after adding a radiator.
Date published: 2017-09-12
Rated 5 out of 5 by from Sentinel X100 Had to extend/move pipes to fit a new upright tall radiator, first time I have drained/refilled the system and after a clear out of the filthy F&E tank I added this, seems good value compared to others and gets good reviews, not sure if it's just me but heating system seems quieter since adding?? Great service & price from Screwfix as usual!
Date published: 2017-09-03
Rated 5 out of 5 by from Great product My go to system inhibitor. Does what it says especially when the system has been flushed with Sentinel X800.
Date published: 2017-08-20
Rated 5 out of 5 by from does what it says on the tin good price, had to drain down my system to fit a new rad. hand that the store is just round the corner
Date published: 2017-08-17
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