No, this will affect the operation of the underfloor heating. Since it is ethylene glycol and has a high flash point, it can be dangerous when heated. If no one is at home for a short period of time, it is best to set the boiler temperature to the lowest setting and run it at a low temperature to avoid freezing. If no one is at home for a long time, all water from the underfloor heating system should be drained.
Antifreeze can harm the human body
Adding antifreeze to the underfloor heating system of the wall-mounted boiler Gas is a common way to prevent pipes from freezing during cold seasons. However, if used incorrectly, it can present certain dangers.
For example: Glycol antifreeze can be toxic to humans and can be irritating and corrosive if inhaled or in contact with skin.