We’ve categorised our range of ground source heat pump products using The Sentinel System to help you achieve best practice: clean, protect and maintain to achieve optimum performance and reliability.

FACT: Degraded glycol becomes progressively more difficult to pump. Pumps then have to work harder, often entirely negating the original energy efficiency benefits!

The Sentinel System: Clean, Protect, Maintain

Best practice, best solution.

Lifetime protection for heating and hot water systems with the best practice process of Clean, Protect, Maintain.

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R500C Thermal Fluid Concentrate

R500C Thermal Fluid Concentrate


R500 Heat Transfer Fluid

Sentinel R800 Cleaning and Flushing Fluid

R800 Cleaning and Flushing Fluid


R700 Sanitiser and Biocide

Sentinel Frost Check Kit

Frostcheck Test Kit