What Would Cause Water To Leak From The Top Of My Hot Water Heater Near The Hot Water Outlet Line?

There is a safety valve on top of the heater to let pressure off in case it gets too high, The valve has a lever that you can lift up and let pressure off. If it goes bad then it will leak. The hardware store has these replacement part for a few bucks and is easy to change, just turn off the water and open a faucet first before removing it to let the water pressure off.

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Could be as simple as a loose connector or the water is reaching the relief valve temp/press.If the tank is a 6 or 10 year tank and it is near the 6 or 10 yr mark it may have developed a pinhole leak from errosion.first check both connectors on top the inlet/outlet.( if they are loose) then check area around the relief valve inlet or discharge.if it is leaking from the relief valve tou may have to lower the setpoint temp. If it is not leaking from the mention areas the tank has probably developed a pin hole leak and will need to be replaced. A month after I moved into my house I had the same problem and assumed it had a pinhole leak after I bought a new one and went to replace it found that the connector fittings from the hot outlet had worked it's way loose from expansion and contraction. Good luck

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