Top Rated Product

Product Reviews

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.

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.
Average Customer Rating:
4.833 out of 5
4.8
 out of 
5
(30 Reviews) 30
Open Ratings Snapshot
Rating Snapshot (30 reviews)
5 stars
26
4 stars
3
3 stars
1
2 stars
0
1 star
0
30 of 30(100%)reviewers would recommend this product.
Customer Reviews for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Review 1 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Very effectiveproduct
17 Jan 2014
By DDamo
, Bexleyheath
"I used 1lt of X100 when I refilled the central heating system about 14 months ago.
Todays drained water form the system is practically clear.
That gets a A Star from me.
"
Review 2 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Good product
6 Nov 2013
By Stevie1963
, Buckinghamshire
"Seems to do the job well enough though difficult to gauge when it is added to the system"
Review 3 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Real Good Value
12 Oct 2013
By BillyBox
, Clitheroe
"This is a top quality product with a top quality price from Screwfix."
Review 4 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Sentinel X100
31 Aug 2013
By Rachy
, Gloucester
"Sentinel X100 Central Heating Scale Inhibitor 1Ltr. Has done, is doing what it is supposed to!"
Review 5 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Slap it in!
23 Nov 2012
By DIYDicky
, Staffs
"Bostin' stuff this. Slap 2x bottles in for good measure (you can't over-dose) + a bottle of scale inhibitor and prepare to be blown away! Maybe not quite, but this will make your boiler shut up faster than a hungry dog at tea time. A bit pricey, but hey, you only do it once!"
1 of 1 people found this review helpful.
Review 6 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Best protection
5 Nov 2012
By Leo111
, Isle of Wight
"Easy to apply which completely protects my system, recommended by my plumber / engineer, if its used by the professionals then its good enough for me. Research pays and saves you money go to Screwfix."
Review 7 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
It's only Corrosion Inhibiter!
18 Oct 2012
By Blobby2
, St ALBANS
"This stuff works. I once omitted it from my system because I was going to do some more work on it. After a while the TRV's siezed up . So make sure you use it!!"
1 of 1 people found this review helpful.
Review 8 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
x100 inhibitor
26 Jul 2012
By nikaplumber
, Gloucester
"The only inhibitor I use now, performs well and had no problems with it"
Review 9 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
3 out of 5
3 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
3 out of 5
3 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Sentinel X100 inhibitor
15 Jun 2012
By BusyWoman
, West Midlands
"Great Product reduces noise etc,
Shows one price in book to on line charged different when going to check out"
Review 10 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
sentinel x100
20 Apr 2012
By coppersmith
, Plymouth
"have used this years, very good at what it does, even used it in my classic car. I trust it that much!!"
Review 11 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Sentinel Liquid
28 Feb 2012
By Ferrism
, SWINDON
"Recently purchased this item, it looks to have done exactly as stated on product label. Very pleased and would recommend to all."
Review 12 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
X100
27 Feb 2012
By ElectrikalPlumbing
, birmigham city
"dont mess arround with anything els, use X800 in a used system, leave for as long as you can, say 2 weeks, then flush and use X100. you then just top it up every year or 2."
2 of 2 people found this review helpful.
Review 13 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
it works
26 Feb 2012
By realale
, Grimsby
"have been using it for years. I recently drained and altered a heating system I fitted 10 years ago,the water was CLEAR and NO SLUDGE in radiators!!!"
Review 14 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
5 out of 5
5 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
quality
21 Oct 2011
By kipster11
, sutton in ashfield
"Top quality product, excellent value for money, great customer service as usual!"
Review 15 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
3 out of 5
3 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
X100
15 Oct 2011
By MALKARHOL
, MIDDLESBROUGH
"YOU GET WHAT YOU PAY FOR. SENTINAL USED BY THE TRADE FOR PROFFESSIONALS."
0 of 1 people found this review helpful.
Review 16 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
good gear
26 Aug 2011
By divvyhead
, London
"Good reliable product, works well and does exactly what it states it will do"
Review 17 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
5 out of 5
5 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Inhibitor
22 May 2011
By TargetPlumbing
, Swadlincote
"Easy to use, and as always good stuff. Can be sourced cheaper if you search around."
Review 18 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
does what itsays on the tin
7 Apr 2010
By eyupdude
, pickering
"bought this product before and does what it says,reasonably priced and good performer"
Review 19 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
4 out of 5
4 out of 5
Reliability: 
4 out of 5
4 out of 5
x100 Inhibitor
13 Feb 2010
By DIYSid
, Bedford
"Added a couple of litres of x100 to my central heating system following a flush with x800. The x800 certainly made a big difference in terms of the reduced noise from the boiler. The x100 is needed to prevent sludge build up in the system. Difficult to say at this stage how effective the x100 is."
Review 20 for Sentinel X100 Central Heating Scale Inhibitor 1Ltr
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Would you recommend this product? Yes
Overall Rating: 
5 out of 5
5 out of 5
Value: 
4 out of 5
4 out of 5
Features: 
4 out of 5
4 out of 5
Performance: 
5 out of 5
5 out of 5
Reliability: 
5 out of 5
5 out of 5
Scale Protection
11 Feb 2010
By Booty
, Harwich
"Continued use of this product ensures good circulation in my central heating system."
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