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Product Details

Solution to reduce boiler noise whilst simultaneously helping to restore boiler efficiency

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 Boiler Noise Reducer 1L is rated 4.9 out of 5 by 14.
Rated 5 out of 5 by from Sentinel is by far the best products to use Cleaned system with x400 for 2 weeks, drained down and refilled with x100 and added this in too. System now better than ever. Nice and quiet too.
Date published: 2020-02-03
Rated 5 out of 5 by from Great service Very speedy delivery, very convenient.
Date published: 2020-01-28
Rated 5 out of 5 by from Kettling boiler sorted Once put into the heating system, it took a couple of hours to notice any difference. But definitely works
Date published: 2020-01-26
Rated 5 out of 5 by from As always Sentinel products work! Made my system nice and quiet
Date published: 2020-01-22
Rated 5 out of 5 by from Boiler noise reduced Used this after draining and flushing. Cleaned the tank out manually also. Worked straight away, 80% better. Have used this before and eventually the noise came back after 6 or 7 months.At the minute just pleased not to have a banging boiler! At a much cheaper price than competitors.
Date published: 2020-01-14
Rated 5 out of 5 by from Does what it says on the tin, fantastic! Boiler was practically silent within the hour, great stuff, wish I'd found it sooner would have saved me a call out fee.
Date published: 2020-01-06
Rated 5 out of 5 by from Cleared kettling sound on new Bosch boiler We had a new Worcester Bosch boiler fitted and after a few months we could hear a crackling sound only when the heating was on. Cleaned the system with a system cleaner for 4 weeks and then refilled the system with this and the sentinel inhibitor. The noise has now gone completely. All in all, worth every penny.
Date published: 2019-12-17
Rated 5 out of 5 by from Hear the difference in just 5days Can already hear the difference in just 5days; getting quieter every day. Easy to use if you get yourself pouring cap/nozel. Have also used with the X100.
Date published: 2019-12-07
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