Floor heating pipes are filled with antifreeze and generally do not freeze if not in use.
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 floor heating system is not used for a long time, it is recommended to drain the water in the floor 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 return valve of the main heating pipe and drain all the water to prevent the pipes from freezing and cracking.