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Sentinel

Sentinel is a company with a clear goal: we offer water treatment products and services that provide the best lifetime protection for heating and hot water systems. Originally launched in the UK by Grace Dearborn in 1988 and subsequently a subsidiary of the leading multinational General Electric, Sentinel has operated independently since 2005, expanding its international reach and range of innovative solutions.

The story of our innovation is filled with firsts, from the pioneering of the practice of Jetflushing back in 1998 to the development of the world’s first multi-cyclone central heating filter, Eliminator, in 2012. Recognised as a UK market leader, we are justly proud of this reputation for innovation and new product development.

Our product offering has developed to address the needs of both domestic and commercial central heating installers and engineers, strengthening our range of products for traditional boiler systems, and expanding into products for renewable energy systems and potable water systems. We also have a number of products in our range developed specifically for specialised markets, such as Germany.

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10 Reviews

RS Plumbing & Heating - August 13, 2019 @ 06:55

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I have found the sentinel range of chemicals to be great price and very effective. They are my go to range and are possibly the best on the market.

Lee Key Plumbers - August 3, 2019 @ 02:24

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Sentinel x800 and x100 the easy and cheaper way to give you central heating system a good clean. I have used the Sentinel products on numerous occasions to bring a central heating system back to full working order

Edwards - July 12, 2019 @ 11:48

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That X100, I’m never sure it’s not just water but it really does do the job, love the x800 for the power flush but tent to use the FX2 from Kamco a bit more.

B H heating solutions - June 14, 2019 @ 10:05

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Use a lot of there products when flushing there good but not great on the real sluged up system have to use kamco for that but on the average flush there ok do the job and happy to continue to buy

He@Heating ltd - June 13, 2019 @ 05:04

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I have used some of there products over the years, the last few years I have tended to use Adey products generally as they have been cheaper. Especially when bought with filter pack. After attending a sentinel water treatment training session I was pleasantly surprised by there fantastic attitude to the industry and other leading brands, through there honesty and a better understanding of there products I’m more likely to use there chemicals. Still not sold on there filter but again was surprised by its build quality.

DCB Plumbing & Heating - April 30, 2017 @ 11:59

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I've used the chemicals for years, never had a issue. Not a massive fan of the filter but it does work well just looks a bit ugly

Gas-Tec - April 30, 2017 @ 10:02

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I use these as my go to system cleaning and protecting chemicals, have been around for years so the know how to do the job. X800 is the best cleaner I have used reducing time on flushing

Drew Styles Plumbing & Heating - April 24, 2017 @ 01:48

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I've used this for a long time and found it to be a good reliable product. There are better ones on the market like Adey but this won't really see you wrong.

Afterglow Plumbing & Heating Ltd. - April 16, 2017 @ 03:48

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I find sentinel a really good product. X800 is brilliant for cleaning central heating systems. And I've found x100 great for protecting systems. I'm not overly keen on their system filter it feels a bit cheep and I think for a market leading company they could do better really

SAFGas Ltd - February 12, 2017 @ 10:34

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Have always used these products consistently and they have never given me issues. The results on central heating system cleaning have been brilliant. The company support is always good too & they answer quite quickly