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Old 09-27-2015, 09:56 PM   #1
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Water heater cold water line corroded?


Hi all,

My parents had this water heater installed probably 5ish years ago, and I recently saw it and the cold water line has a lot of buildup/corrosion on it. I attached a picture. The little valve is attached to the furnace humidifier.

Has anyone seen this before? Can't tell if it's all from condensation, small leak, or something else?

Thank you
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Water heater cold water line corroded?-water-heater.jpg  

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Old 09-27-2015, 10:13 PM   #2
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Looks like a small leak develop from that saddle valve and rusted everything out.

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Old 09-27-2015, 10:35 PM   #3
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I would say most of your problem is from that saddle valve. Could be other issues as well. Have to remove that rag and see where it's leaking from. I'm guessing the saddle valve.

Easy fix. If it is the saddle valve, replace it with a sharkbite slip tee and push on appliance valve as noted in link (see link below). Turn off water, relieve pressure, no soldering needed. Then clean that corrosion off with some vinegar and flour before you have to replace all the pipe and fittings. Just a suggestion.

Please wait for the plumbers to respond. Thanks.

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Old 09-28-2015, 07:22 AM   #4
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Off topic, and OP may be already aware. Check the humidifier reservoir and make sure there's no bacteria.
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Old 09-28-2015, 09:55 AM   #5
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Depending on your skills, another option would be, if the threads are not all rusted out, is to break it free at the union and replace everything.

If you do not have the skills required to fix it then tell your parents to hire a local plumber to get the leak stopped before any more damage occurs. It's starting to rust out the flue, inlet, and top of water heater. Rags and paper towels is not going to work.

The plumbers will be along shortly to give you more advice/suggestions.
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Old 09-28-2015, 10:52 AM   #6
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What's above the saddle valve where the rag is wrapped around. First step is to find out where it's leaking from. Go from there. Looks like leak is coming from above somewhere.
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Old 09-28-2015, 05:07 PM   #7
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Perhaps that is why saddle valves have been removed for use by the IPC.
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Old 09-28-2015, 05:59 PM   #8
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shut off water...cut out pipe above saddle valve...install shut off vave full port flow..install 1/2 cxc tee then connect to dielectric union on top[ of tank...out of tee install 1/2 by 1/4 shut off for humidifier...

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