
X100 Inhibitor provides full corosion and limescale protection inside heating systems. This prevents the build up of harmful debris and sludge.

X800 Fast Acting Cleaner is the perfect cleaner to use when flushing a system. It’s has been specicially formulated to eliminate magnetite and limescale deposits from heat exchangers, radiators, underflor heating floors and pipework in less than 1 hour

Protect low temperature heating systems against biological and fungal build up and blockages with X700 biocide.
Powerful magnetic filtration of system debris with an 800 micron sieve to remove non-magnetic debris. Circulating debris in water heating systems can cause wear and premature failure of pumps, valves and heat exchangers.
Instructions, dosing information and safety data sheets for our chemical, filter and scale protection products.
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It’s basic chemistry – when water comes into contact with metals, rust happens.
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Sentinel will return to InstallerSHOW this June, joining the industry at the NEC Birmingham from 23–25 June on stand 5F35.
Heat pump installations are growing fast. Here's what BS 7593:2019+A1:2024 requires for water treatment on ASHP systems and why it matters at specification stage.
Repeat callbacks on the same system? Magnetite is usually the cause. Here's what it is, why it builds up and how to fix it properly.
Heating system failure in healthcare isn't just a facilities issue, it's a clinical risk. Here's what best practice water treatment looks like across healthcare estates.
BS 7593 is now referenced in Approved Document L for water treatment. Here's what needs to be specified.
Learn when and how to check inhibitor levels during a boiler or heat pump service. Step-by-step guide.
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. As of 2021, Sentinel is owned by Aalberts N.V., and sits in the hydronic flow control cluster.