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Product Details

Provides protection for clean central heating systems against limescale and corrosion. Suitable for use in all types of indirect central heating system, the inhibitor will extend the life of the system, ensuring maximum efficiency and minimising fuel usage.

Technical Specification
Brand Sentinel
Safety Data Sheet click here
Volume (L) 1
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm £5 Free
Turbo usually Next Business Day before 12 noon £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£10 £5 Free


Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 9pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Reviews
Sentinel X100 System Inhibitor 1L is rated 4.9 out of 5 by 27.
Rated 5 out of 5 by from Great corrosion inhibitor for central heating sys A great alternative to the Fernox range and at a lower price. For the few years I've been using Sentinel products they have performed as well as Fernox products in standard household central heating systems. The inhibitor and sealer products work well, the only disadvantage has been dosing into closed/sealed systems, as there are no accessories available to make it easier.
Date published: 2020-01-22
Rated 5 out of 5 by from Simple to use Couldn't be simpler to use.
Date published: 2020-01-21
Rated 5 out of 5 by from Easy to use Easy to use, took only 10 minutes to fill the CH system via the filling loop, no mess
Date published: 2020-01-21
Rated 5 out of 5 by from splendid product, good price splendid product, good price
Date published: 2020-01-12
Rated 5 out of 5 by from As advertised Happy with it, ordered and arrived in good time.
Date published: 2020-01-06
Rated 5 out of 5 by from Good product I have used this for years and found it to be good value for money.
Date published: 2020-01-01
Rated 5 out of 5 by from Sentinel inhibitor, work as intended Easy to use, well priced.
Date published: 2020-01-01
Rated 5 out of 5 by from Sentinel x100 Great at keeping the system clean, ive used it for years
Date published: 2019-12-29
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