The Sentinel SESI is an electrolytic scale inhibitor that can provide a cost-effective solution to help tackle limescale build-up. It provides a long term solution which protects the whole house without introducing any unwanted chemicals to drinking water...

The Sentinel X400 Rapid-Dose is a high performance cleaner for older central heating systems. It can restore circulation and heat distribution to pipework and radiators by eliminating cold spots and demolishing magnetite sludge that has built-up over...

Specifically designed for existing systems the Sentinel X400 High Performance Cleaner is a non-acid treatment for cleaning older heating systems restoring circulation to radiators and pipework. Due to it's highly efficient formula the X400 shifts built-up...

A life long system treatment for boiler noise which will quickly pay for itself in reduced fuel usage.

Sentinel X100 Inhibitor provides protection for clean hydronic heating systems against limescale and corrosion. Suitable for use in all types of indirect heating system Sentinel X100 Inhibitor will extend the life of the system ensuring maximum efficiency...

Compact and high performance. Economic, non-electical way to combat harmful effects of limescale on appliances. Utilises volumetric technology and rapid regeneration, using a resin exchange mechanism to replace hard ions with soft. Ideal for hard water...

Biocide for ground and air-source heat pump systems. Treats 300 Litres Non-Corrosive Effective Biocide & Fungicide Prevents Slime-Forming Bacteria Easy & Quick to Dose Long Lasting Protection Safe to Handle No Toxic Breakdown Products

Provides protection for clean central heating systems against limescale and corrosion, ensuring maximum efficiency and minimising fuel usage. Suitable for use in all types of indirect central heating system. Multi-location application combined with twist...

Ideal for sealing small leaks or weeping joints on all types of indirect central heating systems. Easy to administer and compatible with other Sentinel products. Will not cause blockages within the system. Dose in 30 secs into pressurised systems. Multi-location...

Chemical technology that reduces circulation time to just one hour to minimise time on site. Targeted dissolution of corrosion debris that restores system circulation, reducing future breakdowns and increasing system life. Works in cold and distressed...