Should You Repair or Replace Your Water Heater?

Start with the age

Most tank water heaters last about 8 to 12 years. The manufacture date is usually on the label or coded in the serial number. If yours is near or past 10 years old, a major repair often doesn't make financial sense. If it's only a few years old, repair is usually the way to go.

Problems that are usually worth repairing

• Pilot won't stay lit: often a thermocouple or flame sensor
• No hot water on a gas unit: sometimes the gas control valve
• Electric heater runs out fast: often a heating element or thermostat
• Dripping relief valve: may be a bad valve, or high water pressure that needs a regulator or expansion tank

Signs it's time to replace

• Water leaking from the tank itself. Tanks can't be repaired once they leak.
• Rusty hot water, or rust and corrosion at the base
• Loud rumbling from heavy sediment in an older tank
• The cost of the repair is a big share of the price of a new heater

What we do on a service call

We diagnose the problem, show you what we found, and give you a free written estimate. When both options make sense, we'll quote both, so you can choose. If you replace, we install to current California code: seismic straps, a properly piped relief valve, correct venting, and an expansion tank where required.

By Murrieta Valley Plumbing · Updated November 8, 2026