How Long Do Water Heaters Last? Signs It’s Time to Replace Yours

Average Water Heater Lifespan

Most traditional tank-style water heaters last between 8 and 12 years. Some fail sooner, and others last longer, depending on maintenance, water quality, and installation. If your water heater is more than 10 years old, it is nearing the end of its expected lifespan, even if it still seems to be working.

Tankless water heaters can last longer — often 15 to 20 years — but they also require regular maintenance to stay efficient and reliable. No matter which type you have, age is one of the biggest factors in deciding whether to repair or replace your system.

Signs Your Water Heater Is Failing

You do not have to wait for a complete breakdown to know your water heater is in trouble. Watch for these common warning signs:

1. Inconsistent or Lukewarm Hot Water

If showers never feel as hot as they used to or the temperature fluctuates while you are using hot water, the heater may be struggling to keep up. This could mean the heating element is failing or sediment buildup is reducing efficiency.

2. Strange Noises From the Tank

Popping, rumbling, or banging sounds usually mean sediment has collected at the bottom of the tank. As water heats and moves through the sediment, it creates noise and extra stress on the tank, which shortens its lifespan.

3. Rusty or Discolored Water

If hot water coming from your taps looks rusty or cloudy, it can indicate corrosion inside the tank. In some cases, the anode rod may simply need to be replaced. In others, the tank itself may be deteriorating and close to leaking.

4. Water Around the Base of the Heater

Any moisture around the base of the water heater is a serious warning sign. Small leaks rarely fix themselves. Instead, they tend to get worse and can lead to major water damage if the tank fails completely.

5. Increasing Energy Bills

An older water heater often has to run longer to produce the same amount of hot water. That extra run time shows up on your utility bill. If you notice rising energy costs without any change in your usage, an inefficient water heater could be the cause.

Water Heater Repair vs. Replacement

Sometimes a water heater problem has a simple fix, such as replacing a thermostat or an element. In other cases, replacement is the smarter long-term choice. A good rule of thumb is to consider the age of the unit and the cost of the repair.

• If the water heater is under 8 years old and the repair is minor, fixing it may make sense.
• If the unit is close to or older than 10 years, investing in major repairs usually is not cost-effective.
• If the tank is leaking, replacement is almost always necessary.

Our licensed plumbers can evaluate your system, explain your options, and help you decide whether repair or replacement is the better investment for your home.

How to Extend the Life of Your Water Heater

While every water heater eventually wears out, a few simple maintenance habits can add years to its lifespan and improve performance along the way. Start by draining a few gallons from the tank once or twice a year. This removes sediment that builds up at the bottom of the tank and reduces strain on the heating element. You should also test the temperature and pressure (T&P) relief valve annually to make sure it opens and closes correctly. If the valve sticks, pressure can build inside the tank and shorten its life.

Another often-overlooked upgrade is installing an expansion tank. Homes with closed plumbing systems experience pressure spikes as hot water expands. An expansion tank absorbs that pressure, protecting the main water heater tank from premature failure. Finally, if you notice your water fluctuating in temperature or running out faster than usual, schedule a professional inspection right away. Small issues caught early usually cost far less than an emergency replacement — and can prevent leaks or damage to your home.

Benefits of Upgrading to a New Water Heater

Replacing an aging water heater before it fails completely can offer several advantages:

• Improved efficiency: Newer models use less energy to produce the same amount of hot water.
• More reliable hot water: Fewer cold showers and more consistent temperatures.
• Lower risk of leaks: Reduces the chance of water damage to floors, walls, and belongings.
• Better sizing options: You can match the tank size or tankless system to your current household needs.
• Potential savings: Lower utility bills over time can offset part of the installation cost.

Whether you choose a traditional tank or a high-efficiency tankless system, our team can recommend the right size and style for your home, budget, and lifestyle.