Fernox F1 Central Heating Inhibitor & Protector
500ml Liquid
£25.99
Skip to product information
Fernox
Fernox F1 Central Heating Inhibitor & Protector
£25.99
Shipping calculated at checkout.
- 🚚UK-wide delivery
Delivered to your door or site. Large items arrive kerbside. - ↩14-day returns
On unused, uninstalled items. See returns - ☎
The UK's best-known heating inhibitor. Fernox F1 protects your radiators, boiler and pipework against corrosion and limescale. Add it after any system drain, flush or new installation.
- 500ml bottle: add via the radiator or filter
- 400ml Express: aerosol for quick dosing through a radiator valve
- Treats a typical domestic system (up to 10 radiators or 100 litres)