Use a plunger or a snake. Never hot water.
If you decide to proceed, follow this checklist to avoid a plumbing disaster:
If your home is on a septic system (not city sewer), you need to be even more careful. boiling water down drain
Do not attempt this if you have any plastic piping under your sink. Look under your sink. If you see white (PVC), black (ABS), or ribbed flexible tubing—do not use boiling water.
While it is a common DIY fix for minor clogs, pouring boiling water down your drain can cause serious, expensive damage to your plumbing. Modern homes often use materials that cannot withstand the intense heat of boiling water ( ), leading to structural failure of the pipes. 1. Risk to Modern Piping Use a plunger or a snake
Your pipes are connected by rubber gaskets or wax rings (especially in toilets— never pour boiling water in a toilet). Boiling water can degrade these seals, leading to slow leaks.
No. PEX cannot handle boiling water for sustained periods. It will expand, kink, and potentially burst. Do not attempt this if you have any
If you want a safe procedure to try for clearing a clog, say so and I’ll give step-by-step instructions.
To keep your drains running smoothly and prevent problems, follow these best practices:
You might think, “I have old cast iron pipes. I’m safe.” You are wrong. In fact, you are in the most danger.
A sink plunger can create the pressure needed to break up stubborn clogs.