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If you are not living in the desert where the cold water is hot during the summer, check to see if perhaps the Plumbing is backwards: is the hot water faucet giving cold water? I once had hot water in my toilets.

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16y ago
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12y ago

Because the valve under the sink isn't working. It could be plugged up and not closing all of the way or could be the actual valve you turn broke from the shut off assembly inside of the valve. You will have to find the other shut off for the hot water. Hopefully it is right at your hot water heater or you may have to shut off the water to the whole house. And while you do that, replace the valve under your sink so you don't have to do it like that again. Usually you can buy one for 10 bucks at the hardware store.

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Q: Why does hot water come from the cold faucet even when I turned off the hot water valve under all my sinks?
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