A water heater does not need replacement just because it stops producing hot water. A thermostat, heating element, igniter, valve, or control can fail while the tank itself is still sound. The decision changes when the tank leaks, corrosion is advanced, or repairs keep stacking up.
Start with the failure, not the age
No hot water can come from a repairable control or heating problem. Water leaking through the steel tank is different because the tank is not field-repairable. Shut off the water and energy source if it is safe to do so, then have the unit inspected.
Age is useful context, not a verdict. Portland Water Bureau describes roughly 10 years as typical for a tank model and 20 years for tankless equipment, but water quality, installation, maintenance, and use can move those numbers in either direction. The model and serial number help identify the actual age and warranty.
Questions that make the decision clearer
- Is the tank itself leaking, or is water coming from a fitting or valve?
- Is the failed part covered by the manufacturer's warranty?
- Has the unit needed other repairs recently?
- Does it still meet the household's hot-water demand?
- Would replacement require venting, gas-line, drain, or electrical changes?
A written repair price and a written replacement scope make the comparison concrete. Any rebate should be confirmed against the current utility or program terms before it is counted as savings.
When repair is usually reasonable
A younger unit with a sound tank and one failed replaceable component is often a repair candidate. The same can be true for an older unit when the repair is modest, the tank is dry and free of serious corrosion, and the customer understands that another age-related failure may follow.
When replacement is usually safer
Replacement deserves serious consideration when the tank leaks, corrosion is widespread, parts are no longer available, or the repair cost approaches the installed cost of suitable new equipment. Capacity also matters. A correctly sized replacement should be based on peak hot-water demand, not simply the gallon count on the old tank.
If you are comparing equipment, read the practical advantages and limits of tankless water heaters. If the current unit is staying, follow a manufacturer-led maintenance plan rather than a generic schedule.
True Plumbing can inspect the unit, identify the failed part, and quote both paths when both are reasonable. See our water-heater repair and replacement service or call (360) 207-6064 to confirm availability.
