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

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...

Internal Leak Sealer for small inaccessible leaks and weeping joints in all types of indirect heating systems including those containing aluminium components. Compatible with elastomers. 1 Year Guarantee

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...

Sentinel Sludge remover 1L.This sludge remover disperses sludge and other deposits to maintain system efficiency and is suitable for all types of indirect central heating systems.

Sentinel Rapid dose descaler 400ml.

For cleaning older central heating systems. Restores circulation to radiators and pipework by removing built-up magnetite sludge, eliminating cold spots in radiators and restoring proper heat distribution. Multi-location application combined with twist...

A heavy duty cleaning formulation designed to remove corrosion deposits and scale from boiler heat exchangers radiators and pipework in domestic central heating systems.

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...

Sentinel Noise reducer 1L.This noise reducer decreases the amount of noise a boiler makes and is suitable for all types of indirect central heating systems.