0500 41 41 41
Cookie Reports - Screwfix Cookie Policy


Sentinel X800 Ultimate Cleaner 1Ltr

Product Code: 84921

Rated 4.9 out of 5 by 13 reviewers.

1Ltr. A powerful cleaning agent for central heating systems. Specially developed for use with power flushing equipment. Removes iron and calcium-based deposits to restore circulation and system efficiency. Effective hot or cold. No neutralisation procedure is needed.

View more information

Download more information...

Safety Data Sheet (COSHH)

Was £19.99

£17.99 (inc. 20% VAT)

4.9231 5 13

Save £2.00 (10%)

Add to saved list

Available for deliveryNext Day Delivery
Available for collection from store Store Collection Check stock in your store
Page 1 of 4
Rated 5 out of 5 by X800 Very good product Great for the C/H system clean out, also for a clean boiler, and Kettling (noise) sorter,.The cost of a badly running C/H system , and its performance, is a must buy & use for Sentinel X800 REDDOG94 11 Oct 2014
Rated 5 out of 5 by Sentinel X800 Excellent quality product, works very well when power flushing or with the sentinel eliminator filter to restore boiler & heating system to efficient working order. personally I wont use any other product. 17 May 2014
Rated 5 out of 5 by Great Product Was having problems with poor hot water output on our combi boiler - it would take a good couple of minutes after turning the taps on for the water to get fully hot, and after a further minute or two the boiler often shut down and the water ran cold again. A bit of online research led me to suspect that the cause was likely to be a fairly common problem:- Sludge/magnetite in the CH system blocking the plate heat exchanger from transferring heat efficiently to the DHW. In an attempt to avoid the ~£500 cost of a professional powerflush (plus the possibility of having to have the plate heat ex cleaned or replaced by an engineer) I thought I'd try putting a litre of this in the system in the hope it would flush enough crud out to get us back up and running. Worth a punt, I thought... Well, it worked better than I could have hoped! Added the X800 via a radiator, ran the heating for a few hours to get it well circulated, then ran a hot tap for 10 minutes to ensure the plate heat exchanger got a good blast. The problems cleared up pretty much as soon as I'd done this, but I left the X800 in for a few days before flushing thoroughly and the boiler performance gradually improved further over this period. After flushing, refilled the system and added inhibitor and it's been great since. Saved me the not inconsiderable cost of a powerflush, so am I pretty delighted! 4 Apr 2014
Rated 5 out of 5 by What A Result... Had probs with my Combi Boiler. Scottish Gas said I needed to fork out £620 for a power flush. Decided that I would try adding this first after reading others reviews before spending so much money. Was amazed after one day noticed big difference. Left in running round system for two weeks then flushed out, now Scottish Gas say no need for power flush. The cost of two cans as opposed to powerflush speaks volumes. 14 Nov 2013
Page : 2 next>


Download more info (pdf)

Brand Sentinel
Colour Yellow to amber liquid
Manufacturer Guarantee 1 years
Model No X800
Pack Size 1
Sealant Adhesive Volume 1 Ltr
Total Product Weight 1246 kg