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
Download more information
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

Click here to see information on our delivery service



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.


Click here to see information on returns and cancellation

€17.45 Incl. 23% VAT

Add to Wishlist

More Items to Consider

Loading... Loading...
Sentinel X100 Central Heating Scale Inhibitor 1Ltr is rated 4.8 out of 5 by 180.
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
Rated 5 out of 5 by from Sentral heating protector Easy to use and does exactly as required. Easy to install into the system. Later maintenance by engineer shows no sign of corrosion.
Date published: 2017-08-17
Rated 5 out of 5 by from Used to reduce noice in UFH Used to reduce the noise in an under floor heating manifold. Did the job.
Date published: 2017-08-17
Rated 5 out of 5 by from Sentinel Use every year and wouldn't use anything else , when draining system water is as clear as the day it was filled
Date published: 2017-08-13
Rated 5 out of 5 by from Longevity tells a tale!!! When I moved into my current house I found an empty Sentinel carton next to the f/e tank. It's usual in this area to assume that that product is in the tank. 18 years later I have not had to replace a single radiator and the water is barely cloudy when I take rads off for painting purpose. So, when I decided that enough is enough and constant dilution must come to an end and went for a carton of inhibitor there was no competition. Sentinel has proved it's worth for the past 18 years it can do it again for the next 18 years.
Date published: 2017-08-10
Rated 5 out of 5 by from sentinel 100 Excellent product cheapest at Screwfix. Does exactly what it is intended for
Date published: 2017-04-20
  • y_2017, m_9, d_19, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_180
  • loc_en_IE, sid_79683, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix-ie