Welcome

We protect heating and hot water systems by providing best practice solutions and products internationally.

We have a comprehensive range of products supported by approachable experts to help you achieve best practice protection for domestic and commercial systems, protecting against limescale, corrosion and accompanying problems which can cause inefficiency or failure.

About Us

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.

Our Products

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.

Services

We are recognised and endorsed by the leading suppliers of heating and hot water systems and associated components. Throughout the years, we have developed strong working relationships with many of the largest brands in the plumbing and heating industry; in the UK and internationally, in both the domestic and commercial heating sectors. From the first boiler installation manual which recommended the addition of Sentinel X100 Inhibitor to the more recent development of our online SystemCheck services, we have been working collaboratively with manufacturers to raise awareness of the role of water treatment in full lifetime system protection and in maximising heating efficiency.