Can you use antifreeze in a PVC pipe?

Yes, you can use antifreeze in PVC pipes, but it is important to choose a non-toxic antifreeze, such as propylene glycol, especially if the system may come into contact with drinking water. Regular antifreeze, which contains ethylene glycol, can be harmful and is not recommended for potable water systems. Additionally, ensure that the antifreeze is compatible with the temperature range and pressure specifications of the PVC pipe to prevent any damage. Always follow local regulations and guidelines when using antifreeze in Plumbing systems.