Your water heater works hard every day, providing hot water for showers, dishes, laundry, and more. But like any appliance, it won’t last forever. Most traditional tank water heaters have a lifespan of 8 to 12 years, while tankless models can last up to 20 years with proper maintenance. Knowing the warning signs of a failing water heater can save you from the inconvenience and potential damage of a sudden breakdown.
One of the most obvious signs is age. If your water heater is approaching or has passed the 10-year mark, it’s time to start planning for a replacement. Other red flags include rusty or discolored hot water, which can indicate corrosion inside the tank. Strange rumbling or banging noises often mean sediment has built up on the bottom of the tank, reducing efficiency and accelerating wear. If you notice water pooling around the base of your unit, you may have a slow leak that will only get worse.
Inconsistent water temperature, longer recovery times, and rising energy bills are also signs that your water heater is struggling. If you’re calling for repairs more frequently, the cost of those repairs may exceed the value of keeping the old unit running. Modern water heaters are significantly more energy-efficient, so upgrading can actually save you money in the long run.
Don’t wait for a complete failure—especially in the middle of winter. If you’re experiencing any of these warning signs, contact a licensed plumber for a professional assessment. They can help you evaluate your current system and recommend the best replacement option for your home’s needs and budget.