This Fernox F3 Cleaner is an excellent solution for keeping your central heating system running smoothly. Made in the United Kingdom, it is fast and effective in removing sludge, limescale and other deposits from your heating system. Its 500ml capacity ensures that you have enough cleaner to keep your system in tip-top condition for a long time.With this Fernox F3 Cleaner, you can be sure of a reliable and efficient central heating system. It is suitable for use with other heating, cooling and air products, making it a versatile choice for your home. Don't let the condition of your heating system cause you any problems - get this Fernox F3 Cleaner and enjoy a hassle-free heating experience.