Use a flange plunger. Create a seal over the hole, then push and pull vigorously. 90% of toilet clogs clear this way. Summary – Should You Pour Hot Water Down a Clogged Toilet? Generally, no. The risks of cracking porcelain or melting the wax seal outweigh the limited benefits. Save hot water for clearing slow bathroom sink drains (metal pipes), not toilets. Instead, reach for a plunger or call a plumber if the clog persists. Pro tip: If you’ve already tried hot water and the toilet now leaks from the base, stop flushing immediately and replace the wax ring before water damages your floor.
