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
1 Litre Sentinel X300 Cleaner for New Systems

X300 Cleaner for New Systems

Clean
5 Litre Sentinel X500 Inhibited Antifreeze

X500 Inhibited Antifreeze

Protect
500ml Sentinel X900 Filter Aid

X900 Filter Aid

Protect
Sentinel InstaCheck Engineers Test Kit, showing all products

InstaCheck Water Testing App

Maintain
Vortex250 magnet

Eliminator Vortex250

Protect
Sentinel Eliminator Vortex 300 brass T-piece with valves

Eliminator Vortex®

Protect
Condensafe+

Condensafe+

Maintain

Sentinel Eliminator Vortex® 700

Protect
Sentinel X100 Quick Test Kit front

X100 Quick Test Kit

Maintain