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Sentinel is a company with a clear goal: 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.

Sentinel protects heating and hot water systems by providing best practice solutions and products built on the motto “Clean, Protect, Maintain”. Sentinel has a comprehensive range of products supported by experts to help you achieve best practice protection for domestic and commercial systems.

Sentinel products protect against limescale, corrosion and accompanying problems which can cause system inefficiency or failure. Sentinel products have been endorsed by over 100 manufacturers of boilers, pumps and other hydronic heating components.

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X100 Rapid Dose

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X200 Rapid Dose

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X400 Rapid Dose

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X800 Rapid Dose

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X100 1Qtr

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X100-5 Gallon

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X200-1Quart

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X200-5Gallon

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X400-1 Quart

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X400-5 Gallon

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X500-5 Gallon

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Vortex300-1inch

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Vortex500-1inch

For more information, click here.

Documentation

EP Sales maintains a large inventory of Thermolec and Greentek products and parts to service the needs of our customers.