Special antifreeze liquid for solar water heaters designed to protect against freezing during the winter months and to improve the circulation of the "liquid" in the closed circuit. It is based on monopropylene glycol, ensuring more efficient heat transfer in solar thermal systems at both high and low temperatures, while simultaneously increasing their performance.

Unlike most products on the market (ethylene glycol liquids), it is non-toxic and certified by InS with the HT1 certificate for suitability in contact with food products, thus reducing the risk in case of leakage from the solar system or any issues during the transport and refilling of the liquid.

Additionally, it is specially formulated to provide full protection against corrosion and rust caused by water and oxygen, offering a longer lifespan for the solar system. This antifreeze liquid performs excellently at low and very low temperatures.