How to Know When Your Water Heater Needs Replacing

Most tank water heaters last 10 to 12 years. In San Jose, hard water can shorten that — mineral scale builds up inside the tank, making the heater work harder and fail sooner. If your unit is past the decade mark, it is worth paying attention to the early warning signs.

The first sign most homeowners notice is rusty or discolored hot water. If the rust only shows up on the hot side, the anode rod inside your tank has likely been used up and the tank itself has started corroding. A rumbling or popping sound when the heater runs is another classic symptom: a layer of hardened sediment is boiling water underneath it, stressing the tank bottom.

The sign you should never ignore is water around the base of the tank. A slow leak from a fitting can be repaired, but moisture seeping from the tank body means the internal liner has failed — and the only fix is replacement. A failing tank can let go suddenly, releasing 40 to 50 gallons into your garage or closet, so do not wait it out.

Repair still makes sense when the unit is under 8 years old and the problem is a component: a thermocouple, heating element, thermostat, or pressure relief valve. Past 10 years, put that money toward a new unit instead — you will also gain efficiency, and California code upgrades like seismic strapping and a proper drain pan come with the install.

If you are seeing any of these signs, give us a call or read more about our water heater services. We will tell you honestly over the phone whether it sounds like a repair or a replacement, and what each would cost.