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Plumbers of North Carolina
Plumbers of North Carolina
Plumbing · North Carolina
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No Hot Water

If the tank is leaking from the body rather than a fitting, close the cold inlet valve above it and cut its breaker or gas, because a corroded tank does not get better between now and morning.

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When this becomes an emergency

What a pro does

Losing hot water is one of the few plumbing calls where the diagnosis is fast and the answer is usually clean. On an electric tank, which is most of what is installed in North Carolina outside the gas served towns, the plumber checks power first, then the upper thermostat and element, then the lower. A dead lower element is the classic short shower complaint, since the top of the tank still heats. Sediment matters here too. A lot of homes across the state draw from surface water reservoirs and lake systems, and the fine solids that carry through settle into the bottom of a tank and insulate the lower element from the water it is supposed to be heating. That's the popping sound people describe. Where the heater sits in a crawlspace, and plenty do, age shows up faster because the fittings and the base of the tank live in damp air year round. If the tank itself has failed, replacement is the honest answer, and the plumber sizes it to how the household actually uses hot water rather than matching whatever was there.

Frequently asked questions

Usually sediment or a failed lower element. Solids settling in the bottom of the tank take up volume that used to be water and shield the lower element, so the tank behaves like a smaller one. On an electric heater the failure of one element alone produces almost exactly this complaint.
It depends far more on water chemistry and installation than on the badge. Tanks fed with softer, slightly acidic water work harder on the anode rod, and a heater sitting in a damp crawlspace tends to show corrosion at the fittings sooner than one in a conditioned closet. Watching the anode rod is what actually extends the life.
Sometimes, but the answer turns on the existing gas line, the venting and the electrical service, not the appliance. In mill era housing the supply gas line is often too small for a whole house tankless unit, and the retrofit cost sits in that upgrade. A plumber can tell you what your house would need before you commit.
It means the tank is seeing pressure or temperature above what the valve allows, and that is a real signal rather than a nuisance drip. It can come from a thermostat problem or from thermal expansion in a closed system, and it should be looked at rather than plugged.

No Hot Water?

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