There is no special formula of floor heating antifreeze on the market, because generally if you do not turn on the floor heating in winter, you have to blow water, otherwise it will cause freezing and cracking.
It is recommended to consult professionals here. Inferior automotive antifreeze can easily cause explosions. So never do the work yourself.
The underfloor heating pipe is filled with antifreeze and will generally not freeze if not used.
The freezing point of antifreeze is below the lowest local temperature in winter. Therefore, when the antifreeze in the floor heating system is below the freezing point, the water in the floor heating pipe. will not freeze and therefore no frost damage will occur.
In addition, if the underfloor heating system is not used for a long time, it is rIt is recommended to drain the water in the underfloor heating pipes to avoid problems such as scale if the underfloor heating system is to be used. turned off for a long time, it is recommended to close the main heating pipe return valve and drain all water to prevent the pipes from freezing and cracking.