The direct answer
Consider replacement when a tank body leaks, major faults recur or a repair no longer makes sense for the equipment condition and household needs. Age is useful context, but it is not a diagnosis by itself.
Identify the actual failure
A failed thermostat or external connection can have a different remedy from a corroded tank. Record the model and serial details, service history and any symptoms. Ask the provider to explain what has failed and whether surrounding equipment remains sound. Do not assume a noisy heater needs replacement without inspection.
Compare the costs and limits
Compare a written repair estimate with a full installed replacement scope. Include warranty coverage, parts availability, access and changes needed for safe installation. Repeated failures may change the economics. Avoid relying on a single age cutoff or an appliance-only price that omits required work.
Plan a suitable replacement
Review peak demand, energy supply and installation space before choosing the new unit. Tankless conversions can require substantial utility changes. Request commissioning information, operating instructions and a model-specific maintenance schedule. Keep the invoice and warranty records and learn where the accessible shutoff is located.
When professional help makes sense
Stop owner troubleshooting if the source remains unclear, the symptom returns or the work involves gas, live electricity, sewage or concealed piping. For this issue, explore the checks and repair options for water heater installation. A provider should explain the diagnosis, scope and price before you authorize work.
For an active uncontrolled leak, use an accessible shutoff only from a safe dry location. If you suspect a gas leak, leave without operating switches and contact the gas utility or emergency services from a safe place. Do not keep using a fixture that sends wastewater into the home.
What to tell the provider
- Where the symptom appears and when it began.
- Which fixtures are affected and any recent changes or work.
- Any visible leak, error code or unusual sound.
- What you have safely checked and whether any chemicals were used.
Ask about a diagnostic fee, current availability, the proposed repair and any access or restoration work. Independent providers set their own terms. This website may receive referral compensation; read how the referral relationship works.
For general leak and fixture maintenance, see EPA WaterSense home maintenance. For heater selection, see the U.S. Department of Energy water heater selection guide. Always follow the specific equipment manual. These resources do not verify local provider coverage.