Sentinel X400 Sludge Remover 1L

By Sentinel Product code: 28178 Pack size: Each

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Product Details

High performance cleaner, specifically designed for cleaning older central heating systems. A non-acid treatment which restores circulation to radiators and pipework. Ruthlessly efficient formula shifts built-up magnetite sludge, eliminating cold spots in radiators and restoring proper heat distribution.

Technical Specification
Brand Sentinel
Safety Data Sheet click here
Volume (L) 1
Delivery details

Covid-19 Update

  • Free Next Business Day delivery for orders over £25 to home and site is available for orders placed before 6pm
  • Saturday and Sunday delivery is now available for orders placed before 4pm on Friday for Saturday delivery and 4pm Saturday for Sunday delivery, see here for details
  • Pre-12 delivery service is now available. Place your order before 6pm Mon – Fri for next business day delivery by 12pm. Orders placed after 6pm Friday and before 6pm Sunday will be delivered by 12pm Monday. UK mainland
  • Once your order has been dispatched you will receive an invoice email with the courier details and your tracking number
  • Alternatively go to MyAccount, click on your Order History, click on the TRACK icon to link through to the carrier website and the tracking details for your delivery
  • Delivery direct from suppliers is now available and specific delivery times will be displayed on the product page
Order Value: Under £25 Over £25 but less than £75 £75 & Over
Next Business Day Delivery (Mon-Fri) usually before 6pm £5 Free Free
Pre-12 Delivery before 12 noon Next Business Day £10 £5 £5
Remote areas standard delivery (2-4 days) £5 Free Free
Saturday Delivery order by 4pm Friday £10 £5 Free
Sunday Delivery order by 4pm Saturday £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

Covid 19 Update

Click & Collect

  • Branches are now fully open and operating safely in line with government guidelines
  • Safe contactless collection is available 7 days a week at our branches
  • Our branches are open 7am-8pm Monday-Friday, 7am-7pm Saturday and 9-4pm Sunday
  • Keeping our colleagues and customers safe and well and respecting stringent social distancing requirements is our number one priority – 2 metre rule enforced
  • Our available product range will not require more than 1 person to lift
  • Please see our guide to click and collect below

  • Please ensure that your mobile number is added so that we can text you when your order is ready to collect

Call & Collect

Due to current trading conditions we have suspended our Call & Collect service until further notice.

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 7pm 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 X400 Sludge Remover 1L is rated 4.7 out of 5 by 24.
Rated 5 out of 5 by from It works Our boiler had very bad Kettling noises. Used X400 after drain down system instant improvement no more noise left in system for two weeks drained and replaced with X200 and inhibitor no more noise
Date published: 2020-08-06
Rated 5 out of 5 by from X400 Great stuf did the job nicely -nnededed to buy a second bottle as central heating so big
Date published: 2020-08-03
Rated 5 out of 5 by from x400 Sludge remover Have used this product over many years. Works a treat. Just follow the instructions
Date published: 2020-07-25
Rated 5 out of 5 by from Magic Worked perfectly clearing a seriously blocked system quickly and simply. Was going to hire a flushing unit but this saved me the cost/bother
Date published: 2020-06-30
Rated 4 out of 5 by from sludge remover does what says on the label
Date published: 2020-05-27
Rated 1 out of 5 by from An expensive way to colour water Turned water brown but still plenty of sludge left behind
Date published: 2020-05-15
Rated 5 out of 5 by from Standard kit Standard kit standard kit
Date published: 2020-03-29
Rated 5 out of 5 by from Great Price Great, worked every well, will use it again if required.
Date published: 2020-03-17
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