Can I Put Boiling Water Down Shower Drain __full__ Jun 2026

The short answer is , you should generally avoid pouring boiling water down a shower drain unless you are certain your pipes are made of metal . Boiling water (

While it can help dissolve certain clogs (like soap scum or grease), it poses risks to plumbing materials, fixtures, and personal safety.

The risk of melting PVC pipes, cracking a fiberglass shower base, and burning yourself outweighs the minimal benefit. Stick to hot tap water, enzymatic cleaners, or manual removal methods to keep your plumbing safe and clear. can i put boiling water down shower drain

Because boiling water does not dissolve hair, it will often pass right over the clog or simply push it slightly further down the drain without solving the problem.

If you have a slow or clogged shower drain, try these safer and more effective methods first: The short answer is , you should generally

While boiling water is a popular DIY remedy for unclogging kitchen sinks, it is generally unsafe and potentially damaging when used in a shower drain.

| | Risk | |----------------------|-----------| | PVC (polyvinyl chloride) | Softens at ~140°F (60°C); boiling water (212°F/100°C) can warp pipes, loosen joints, or cause leaks. | | CPVC (chlorinated PVC) | Higher heat tolerance (~200°F/93°C), but boiling water is still near or above limit; long-term use risks failure. | | PEX (cross-linked polyethylene) | Can withstand short bursts, but repeated exposure to boiling water can weaken or deform it. | | Older metal pipes with corrosion | Sudden thermal shock can crack weak spots or loosen scale deposits, causing new clogs. | Stick to hot tap water, enzymatic cleaners, or

While boiling water is a common DIY suggestion for unclogging drains, the short answer is , especially if your home uses modern plastic piping. Why Boiling Water Can Be Dangerous for Your Plumbing

, it far exceeds these safety limits. Sagging and Warping: Exposure to these temperatures can cause plastic pipes to soften, leading them to sag between hangers. This creates "bellies" or dips where waste and debris accumulate, eventually causing new clogs. Reddit +4 2. Compromised Joints and Seals Even if the main pipe doesn't melt, the connections are highly vulnerable. 10 sites Can you pour boiling water down the shower drain? - Quora Oct 3, 2020 —

: The heat can weaken the adhesive glue used to connect pipe fittings, causing joints to loosen and leak.