Forum Discussion

Crambo's avatar
Crambo
Explorer
Jul 15, 2017

Noticed warm water comes out of cold faucets. Why?

Noticed it last night in the shower and today the wife mentioned it after using the bathroom sink and kitchen sink. Hot water faucet delivers good hot water and I haven't messed with anything since we...
budwich's avatar
budwich
Explorer
Jul 15, 2017
the tank usually has a "back flow" preventer valve to stop water from moving back from the tank thru the cold line. That valve could be stuck open so when only cold is selected, hot can flow backwards to the cold line.

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