Hot water usually runs out fast because sediment has filled part of the tank, a heating part is failing, or the water heater is too small for how much hot water your household uses. A broken dip tube inside the tank can also mix cold water in too early.
Sediment Buildup
Over the years, minerals carried in by the water collect on the tank floor. This layer takes up space and makes it harder for the heater to warm the water. You may also hear popping or rumbling sounds when the heater runs. Regular flushing helps, but it is best done by someone familiar with hot tanks and old drain valves.
A Failing Heating Part
Electric water heaters often have two heating elements. If one burns out, the heater can still make some hot water, but much less than before. Gas heaters can have trouble with the burner or thermostat. These parts involve electricity or gas, so they should be checked by a professional.
A Broken Dip Tube
The dip tube carries cold water to the bottom of the tank so it can be heated. If it cracks, cold water mixes with hot water near the top. Showers turn lukewarm quickly, even though the tank still seems to be working.
The Heater May Be Too Small
A new baby, more people living in the home, or a new soaking tub can all raise demand. Running the dishwasher and washing machine at the same time as showers can also drain the tank quickly. Spreading out hot water use can help while you decide whether a larger or different type of heater makes sense.
If the problem started suddenly, a part may have failed. Getting the heater checked can tell you whether a repair will fix it. For questions about sizing a new heater, you can talk it over with our plumbers at JPR Plumbing by calling (833) 603-1840.