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Pouring Boiling Water Down Kitchen Sink Drain

7 years ago

When we had the new sink drains installed, the plumber said don't pour boiling water down the drain. He said that the plastic tail piece and p-trap connections would fail.

I have always poured boiling water down the sink drain and have never had a problem with it. The new material bought at Lowes does look much more delicate than I remembered seeing in the past and I think it probably is susceptible to heat failure.

Has anyone here poured boiling water into a drain made out of most recent big box drain material? Had any problem with it?

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