Q. When we take showers in the morning, there is only enough hot water for one shower. Our 50-gallon electric water heater is not leaking. Do I need a new one or can I fix this one? — N.M.A.

Electric water heaters have another problem that may lead to an inadequate hot-water supply: The heating elements can wear out. Fortunately, the elements are fairly easy to replace.

NASA scientists are researching low-energy nuclear reactors that can be employed in the household. LENRs use common, stable elements like nickel, carbon, and hydrogen and produce stable elements ...

Replacing both elements should cost $40-50, while a new water heater can easily cost more than $500—so, it’s worth the small investment of time and money. The most common electric water heater ...