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

Starts removing magnetite, debris and scale within an hour of being added. Can be dosed through the MagnaClean filter, and left in the heating system for up to 7 days. Treats 100 litres or up to 10 single panel radiators. Suitable ​for all heating...

High concentrate formula that removes debris, scale and sludge. Restores heating efficency, reducing heating and maintenance bills. Works one hour after application. Can be left in the system for up to 28 days. Suitable for all heating systems. Treats...

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...

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

Removes debris, scale and sludge. Restores heating efficency, reducing heating and maintenance bills. Works one hour after application. Can be left in the system for up to 28 days. Suitable for all heating systems. Treats 100 Litres (up to 10 standard...

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...

Effective, universal pH neutral, non-foaming liquid cleaner, which removes sludge, scale and debris from existing central heating systems to restore heating efficiency and eliminate boiler noise. Quick and easy to remove from the system, saving time on-site....

Internal leak sealer developed for use throughout a central heating system to seal microscopic, inaccessible leaks and weeps which may cause pressure loss and boiler breakdown. Saves time and money on draining down the system and repair costs. Does not...