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Air escaping from hot water faucet

Occasionally when I turn on my hot water faucet it sounds like air is hissing at me and the water is spitting out. My water is from a well and the holding tank is underneath the house. It just does this on occasion, what could cause this.

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  • sarge37890 Apr 15, 2009

    This is a good suggestion, thanks for the comment. I also thought of this and certainly hope this is not the cause. If would think if this is the cause then it would not just happen on the hot water side and the water is slightly discolored for a couple of seconds.

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It sounds like you are getting air in the system. Generally the only way this would happen is if the pump is sucking air. The water level may be very low in the well. This is of concern also because the pump is water lubricated (if it is a submersable) and will sustain damge quickly if run dry.

Posted on Apr 15, 2009

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Posted on Jan 02, 2017

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sounds like an element is burned out. if your water heater lost its water, probably from siphoning, and the power was on, then it most likely burned out the element.

you will need to replace. replace both the upper and lower elements at the same time, don't just replace the one that's burned out.

turn off the power to the water heater, be sure to check with a volt meter to make sure its off. drain the water heater.

remove the wires from the elements, not the thermostat, and remove the element. on the newer water heaters they screw in. take that with you to the store so you can match it. get 2 of them.

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start bleeding the air from the water heater, turn on the hot water on a faucet in the house, when it quits spurting air and runs water smoothly turn it off, and turn the power back on to the heater. use your amp meter to make sure. initially there will only be power at the top element 220v to 240v

make sure the thermostats are set evenly, (125* setting) if the settings are mismatched (one at 125 and one at 135) the heater will not function properly.

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