Can boiling water cause damage to your pipes? My plumber husband reveals his expert tips

Boiling water is generally safe to pour down your sink drains. Most home pipes can handle exposure to boiling water without any issues. In fact, it can sometimes be helpful in clearing minor blockages. My plumber husband recommends using boiling water as your first step before resorting to chemicals or more potent methods if you suspect a blockage.

However, there are some instances where boiling water could potentially cause problems for your pipes. If you have plastic or PVC pipes, particularly in newer builds, you should exercise caution as excessive exposure to boiling water could cause the pipes to melt or become misshapen. While this would require a significant amount of boiling water, it's still something to be aware of.

While some people suggest running cold water at the same time as pouring boiling water down the sink to lower the temperature, my plumber husband advises that it would only be cooling down the water and doesn't provide any significant benefits. Instead of focusing on the temperature of the water, he emphasizes the importance of not pouring grease, fats, or food waste down the sink as these can cause more serious blockages that are much harder to resolve.