Our mission is to make best practice solutions simple. To achieve optimum performance and reliability for domestic central heating systems, follow our best practice process of clean, protect and maintain whether you’re commissioning a new system or revitalising an old one. The benefits of adhering to this best practice include improved performance, increased energy savings, and longer system life. 

FACT: A cleaned and protected central heating system can be typically 15% more effective than a dirty one, and new systems can be fouled just like old ones.


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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X100 Inhibitor

Protect

X400 Cleaner

Clean
5 Litre Sentinel X500 Inhibited Antifreeze

X500 Inhibited Antifreeze

Protect

Leak Sealer

Maintain
Sentinel InstaCheck Engineers Test Kit, showing all products

InstaCheck Water Testing App

Maintain
Condensafe+

Condensafe+

Maintain
Sentinel X100 Quick Test Kit front

X100 Quick Test Kit

Maintain