Trade Pack — 2 × Fernox F1 Protector 500 ml (56599)
Corrosion & Scale Inhibitor Central Heating Trade Twin Pack
Cost-effective twin pack of Fernox F1 Protector to help protect wet central heating systems against corrosion and limescale, reduce venting and cold spots, and support long-term efficiency after a proper clean and flush.
Key benefits
- Helps prevent corrosion and scale build-up
- Can reduce frequent venting and radiator cold spots
- Helps prevent pump sticking
- Supports energy-efficient operation when used after thorough system cleaning
- Use with a system cleaner (e.g. Fernox F3/F8) prior to dosing for best results
Pack contents
- 2 × Fernox F1 Protector — 500 ml bottles
- Brand: Fernox | Code: 56599 | FTB: FTB13749
Application notes
- For closed-loop wet central heating systems (sealed or vented)
- Dose after cleaning and thorough flush; circulate and verify inhibitor levels during servicing
- Follow boiler/system manufacturer guidance and Fernox dosing instructions
Technical summary
| Product | Fernox F1 Protector (central heating inhibitor) |
| Pack size | 2 × 500 ml (trade twin pack) |
| Primary purpose | Helps protect against corrosion/scale; supports system efficiency |
| System type | Sealed/vented wet central heating systems |
FAQs
Do I need to clean the system first?
Yes — for best results, clean and flush with a suitable system cleaner before dosing with F1 Protector.
How much should I dose?
Follow the product label and your system manufacturer’s guidance based on system volume. Check inhibitor levels during periodic servicing.
Is it compatible with mixed-metal systems?
F1 Protector is formulated for common mixed-metal central heating systems. Always follow the manufacturer’s instructions.