A chemical treatment designed to protect central heating systems from corrosion and limescale. It is suitable for mixed metal systems, including aluminum. Key features and benefits: Prevents corrosion, sludge, and scale buildup. Improves system efficiency and extends its lifespan. Can save up to 15% on gas when used with Fernox Cleaner F3. Suitable for both new and existing systems. Maintains optimal pH levels in the system. Treats up to 130 liters of system water. Non-toxic. plus ,when you purchase 2 bottles, you can enjoy a special discount of £27.50, making it a convenient and cost-effective solution for your heating needs.