If you have a slow or clogged shower drain, try these safer and more effective methods first:
Here is a detailed breakdown of why you should avoid this method and what you should do instead. can i put boiling water down shower drain
Shower clogs are different. They are almost exclusively made of: If you have a slow or clogged shower
| | 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. | | | CPVC (chlorinated PVC) | Higher heat
: Extreme heat can soften or warp plastic pipes, leading to sagging and eventual failure.