SEAL THE DEAL - Instantly repairs leaks in your heating system!
PROFESSIONAL GRADE - Trusted by experts for reliable and long-lasting results.
FAST ACTING FORMULA - Get back to comfort in no time with rapid leak sealing.
ECO FRIENDLY SOLUTION - Safe for the environment while keeping your home warm.
UNIVERSAL COMPATIBILITY - Works seamlessly with all types of central heating systems.
Fernox Central Heating Leak Sealer F4 is a 500ml solution designed to quickly and effectively seal leaks in your central heating system. Its universal compatibility and eco-friendly formula make it a go-to choice for both professionals and homeowners looking to maintain a warm and efficient home.
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