Same question, but in reverse.

Sink and tub in room farthest from water heater have cold water but no hot. Middle section of house has everything in working order. When I turn on both sink and tub hot water, nothing happens. When both are open and i ALSO open the cold tub faucet, the sink (while still on hot setting) starts flowing warm water, not hot. I am 99% sure hot pipes only run through attic. Washing machine is the closest thing to water heater that has hot and cold lines, hot water runs normally through there (just checked).

What am I looking at here?

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Posted by fwtex

Member since Nov 2019

1971 posts

Posted on 1/16/24 at 4:44 pm to TronWall

Hot water lines are hot only when hot water is running through them. My guess is that your hot water line froze if water had not been run through for a period of time.

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Posted by baldona

Florida

Member since Feb 2016

20539 posts

Posted on 1/16/24 at 6:40 pm to TronWall

quote:
Sink and tub in room farthest from water heater have cold water but no hot. Middle section of house has everything in working order. When I turn on both sink and tub hot water, nothing happens. When both are open and i ALSO open the cold tub faucet, the sink (while still on hot setting) starts flowing warm water, not hot. I am 99% sure hot pipes only run through attic. Washing machine is the closest thing to water heater that has hot and cold lines, hot water runs normally through there (just checked).

If I’m understanding you correctly you may have ice starting to form, you should run water or attempt to until it works normally.

The water starts to form ice and slows down, will not be hot. If you run it the water will melt the ice and open back up.

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