replace the hot water shutoff valve under the sink


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Old 11-25-12, 03:28 PM
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replace the hot water shutoff valve under the sink

I am trying to replace the hot water shutoff valve under the sink, and need to do the same thing (shut off hot water at source, or at least before the valve I'm replacing). But I'm afraid in my case shutting off cold water supply to the heater is not going to work because the hot water heater is on the second floor, while the sink is on the first floor. Do I have to turn off and completely drain the heater?
 

Last edited by lawrosa; 11-25-12 at 07:52 PM.
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Old 11-25-12, 03:46 PM
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Since you don't have any valves on the second floor to turn off then you have no choice but to empty the tank.

You would have thought they would have put in a valve but future servicing is not always on the installers mind.
 
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Old 11-25-12, 04:15 PM
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If you open a hot water valve on the second floor, it might not necessarily siphon the tank out. Try this first, turn off the house water, open a second floor faucet and then a first floor faucet. See what happens.
 
 

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