What is the average life of a hot water heater?

Author: Jaleel Kilback DVM  |  Last update: Tuesday, June 9, 2026

Based on the manufacturer's suggested service life, the average life expectancy of a water heater is about 8 to 12 years. That varies with the location and design of the unit, quality of installation, maintenance schedule and water quality.

How do you know when a hot water heater needs to be replaced?

Common signs that it's time to replace your water heater include its age (usually 10-15 years), rusty or discolored water, strange noises, leaks or pooling water around the tank, and insufficient hot water supply.

Can a hot water heater last 20 years?

Water Heater Lifespan

With proper maintenance, a tank water heater tank should last six to 12 years. A tankless water heater can last for more than 20 years. Check your water heater's warranty for the most accurate timelines.

What shortens the life of a water heater?

Sediment can build up over time in a water heater, shortening its lifespan. To prevent this, you should flush your water heater at least once per year. Flushing will help to remove any sediment that has built up and improve the efficiency of your water heater.

Should I replace a 15 year old water heater?

Water heaters typically have more than 10 years of useful life, so it is unlikely that they will need to be replaced unless you detect constant failures such as leaks, clogs, or no longer producing hot water as before.

How Long Do Water Heaters Last? This Plumber of 48-Years Shares His Experience

What brand water heaters last the longest?

Bradford White water heaters are known for their durability and sturdy construction, providing lasting performance for years. In business since 1881, the company has a long reputation for selling quality products for both residential and commercial use.

Does flushing a water heater extend its life?

Flush the tank regularly

Over time, sediment can build up in the bottom of the tank and cause the unit to overheat. This can shorten the lifespan of the unit and lead to expensive repairs. To avoid this, it's important to flush the tank regularly. Most manufacturers recommend flushing the tank once a year.

Why do water heaters fail so quickly?

Heating elements can gradual breakdown if there is a mineral build up in the heating system. This is because mineral deposits can solidify, encasing the elements and forcing it to work harder to heat the water. This will lead to gradual wear out that will make the heating system have a shorter life span.

Who makes the best gas water heater?

Top Water Heater Brands in 2024
  1. A.O. Smith: Advancement and Efficiency. ...
  2. Rheem: Versatile and Reliable. ...
  3. Bradford White: American-Made Quality. ...
  4. Bosch: Compact and Efficient. ...
  5. EcoSmart: Vitality Sparing and Eco-Friendly.

How often should I flush my water heater?

Most homeowners should flush their water heaters every 6 months or so, but if you have extremely hard water, you may want to do it more often. Flushing your hot water heater could be necessary as often as every few months depending on the mineral content of your local water supply.

What is the life expectancy of a Rheem water heater?

Rheem hot water systems have a typical life span of between 5 and 15 years depending on water conditions and how well the system has been serviced. You can add years to the life to a Rheem hot water system if you have it serviced every 5 years.

Should I replace my water heater before it fails?

A Corroded Water Heater Could Cause Significant Damage

If the tank rusts through, it could fail catastrophically and flood your home. You can avoid this disaster by replacing your water heater before it fails.

How long does it take for a plumber to replace a hot water heater?

Once you decide to (or are forced to) replace your current water heater, there are a few decisions you need to make to get the process started. If there are no issues or complications, a licensed plumber should be able to complete the process in 2-3 hours.

What are signs your water heater is going bad?

Water heaters show several signs of going bad, including lack of hot water, temperature fluctuations, decreased water pressure, strange noises, rotten egg smell, visible leaks, rusty or discolored water, and increased energy bills. If your water heater is over 10 years old, it may be time to consider a replacement.

Are tankless water heaters worth it?

Advantages and Disadvantages of Tankless Water Heaters

The initial cost of a tankless water heater is greater than that of a conventional storage water heater, but tankless water heaters will typically last longer and have lower operating and energy costs, which could offset their higher purchase price.

What is the most common cause of water heater failure?

A: Common causes of water heater malfunctions include sediment buildup, faulty heating elements or thermostats, corroded anode rods, and excessive water pressure. Regular maintenance can help prevent many of these issues.

What is the longest lasting water heater?

Tankless water heaters have many advantages over traditional tank-style and heat pump water heaters, and this is especially true when it comes to average life expectancy. A new gas or electric tankless water heater will typically last for a minimum of 20 years, and some units may last for 30 years or more.

How to flush sediment from a water heater?

Okay, it's time to flush that water heater.
  1. Step 1: Turn off the water heater and water supply. ...
  2. Step 2: Connect a garden hose to the drain valve. ...
  3. Step 3: Run hot water and open the drain valve. ...
  4. Step 4: Turn the water supply back on to flush the tank. ...
  5. Step 5: Close drain valve, fill tank and turn on water heater.

What happens if you never flush your water heater?

-Reduced Efficiency: As scaling collects at the bottom of the tank, your water heater will become less effective at heating the water in the tank. -Corrosion: If your water heater goes long enough without a proper flush, you could also have corrosion attacking the tank itself, weakening its structural integrity.

How often should I change the anode rod in my water heater?

The frequency of anode rod replacement depends on several factors, such as water quality, usage patterns, and the type of anode rod installed. In most cases, we recommend inspecting and potentially replacing the anode rod every 3 to 5 years.

How much does it cost to flush a hot water heater?

Expect a pro to charge you between $75 and $200 to come to your home to flush your water heater, depending on where you live. While this cost deters many homeowners from performing this annual maintenance, it can extend the water heater's lifespan by years, making it worth the additional cost.

Does home insurance cover a water heater?

It's important to note that standard homeowners insurance policies typically only cover damage to the structure of your home and personal property. They do not include replacement cost coverage for the heater itself.

How much is labor to install a hot water heater?

Expect to pay $920 to $1,177 for electric water heater installation costs.

How much is the average electric bill for water heater?

Typically, a hot water heater that uses a tank will run for 3 to 5 hours per day. So, a 4,000-watt heater used for 3 hours a day at 10¢ per kWh will cost $1.20 per day, about $36.50 per month, or $438 per year.

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