How to Know When It’s Time to Replace Your Water Heater

Helpful Tips for Homeowners in DuPage County, IL

Most people don’t think about their water heater until something goes wrong—but like any appliance, water heaters wear out over time. In DuPage County, where the water is on the harder side, 40-gallon gas water heaters typically last about 8 to 12 years.

Understanding the signs of an aging unit can help prevent surprise leaks and loss of hot water.

1. Age of the Water Heater

Water heaters usually have a lifespan of 8 to 12 years. If your unit is more than 10 years old, it’s wise to be on the lookout for signs of wear. The manufacture date can usually be found on a label or within the serial number on the unit.

2. Rusty or Discolored Water

Rust-colored hot water could be a sign that the inside of the tank is beginning to corrode. If this occurs, it’s likely the water heater is nearing the end of its usable life.

3. Water Around the Base

If you notice moisture or pooling water near the base of the water heater, it could indicate a slow leak. Even a small leak can worsen over time and lead to water damage.

4. Strange Noises

Popping, rumbling, or banging sounds are often caused by sediment buildup at the bottom of the tank. This buildup reduces efficiency and can cause the tank to overheat or fail prematurely.

5. Inconsistent or Cold Water

Running out of hot water faster than usual or experiencing uneven water temperatures might mean the unit is struggling to heat water properly. This could be due to age, wear, or sediment buildup.

6. Higher Utility Bills

If your energy bills have been increasing and your usage hasn’t changed, an inefficient water heater may be the reason. Older units often work harder to heat the same amount of water.

Local Tip for DuPage County Residents

Since the area has moderate to hard water, mineral deposits can build up more quickly. Regular flushing of the tank (once a year) and periodic checks of the anode rod can help extend the unit’s life and keep it running efficiently.

This information is intended to help homeowners stay ahead of potential issues and avoid unexpected problems. If you're unsure about your water heater's condition, a licensed plumber can inspect it and let you know whether maintenance or replacement is needed.  Call us if you would like a recommendation.