Most homeowners don't think about their water heater until something goes wrong. Learn the key warning signs so you can act before a cold shower — or worse, a flooded basement.
Your water heater is one of the hardest-working appliances in your home, quietly doing its job day after day. But like everything, it has a lifespan. Here are the 7 biggest red flags that it's time to call a plumber.
1. Age Over 10 Years
The average tank water heater lasts 8-12 years. If yours is a decade old, start budgeting for a replacement even if it's still working — it's living on borrowed time.
2. Rusty or Discolored Water
If brownish or reddish water comes from your hot tap, that's corrosion inside the tank. This means the tank is deteriorating from the inside and could fail soon.
3. Rumbling or Popping Sounds
Sediment builds up at the bottom of the tank over time. When heated, this sediment hardens and causes the banging sounds you hear. It reduces efficiency and accelerates wear.
4. Water Pooling Around the Unit
Any moisture around the base of your water heater is a red flag. Micro-fractures in the tank can expand as metal heats and cools, eventually causing major leaks.
5. Inconsistent Water Temperature
Struggling to get consistent hot water? Mineral deposits around the heating elements are often the culprit. In many cases, the fix is a full replacement.
6. Pilot Light Keeps Going Out
On gas water heaters, a thermocouple issue is often why the pilot won't stay lit. Sometimes it's repairable — but if it's happening frequently, the unit may be near end of life.
7. Rising Energy Bills
An aging water heater works harder to do the same job, consuming more energy. If your utility bill is creeping up with no other explanation, the water heater might be to blame.
Bottom Line: Don't wait for a complete failure. A proactive replacement gives you time to choose the right unit — tankless, hybrid, or traditional — at your pace, not in an emergency.
Call Corralez Plumbing & Gas at (850) 491-6448 for a free water heater evaluation in Middle Tennessee.