How long do gas water heaters last?

Author: Anais Haley  |  Last update: Thursday, May 28, 2026

Average Lifespan Of A Hot Water Heater With regular inspection, draining, and flushing, you can expect a gas water heater to last anywhere from 8-12 years and an electric water heater to last anywhere from 10-15 years.

Can gas water heaters last 20 years?

In answering the question, "How long do water heaters last?" it's typically between 8 and 20 years but can vary significantly based on these factors.

How do I know if I need a new gas water heater?

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.

How often should a gas water heater be replaced?

But it's helpful to start by determining the service life of the appliance. 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.

Should I replace my 15 year old water heater?

It's generally a good idea to replace a water heater before it fails if it's reaching the end of its expected lifespan (usually around 10-15 years). Replacing it proactively can prevent potential water damage and inconvenience when it does fail.

How long should my water heater last? - Master Plumber Explains!

Is a 20 year old water heater safe?

If your tank water heater is more than 10 years old, it may be time to consider replacing it. 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.

How often should a water heater be flushed?

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.

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

Water Heater Installation Process. 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.

How do I know if my gas water heater is bad?

7 Signs of Hot Water Heater Failure
  1. Water Is Discolored or Gritty. Inside your hot water heater there is a component called an anode rod. ...
  2. Hot Water Smells Off. ...
  3. Tank Is Leaking Water. ...
  4. Heating Process Makes Strange Sounds. ...
  5. Hot Water Runs Out Too Quickly. ...
  6. Water Never Gets Hot Enough. ...
  7. There's No Hot Water At All.

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.

Why is my hot water cold in the morning?

If you get cold water in the morning, chances are you're touching the water that was left sitting in the pipes. If it's still cold after a few seconds, it could be because the water heater burners have yet to ignite. And they won't ignite until you call for hot water, which is usually the first hot shower of the day.

How hard is it to install a new gas water heater?

Learning how to install a gas tank water heater can be a challenging process. Do not attempt installing a gas water heater yourself unless you're experienced and comfortable with soldering, working with natural gas and following local installation codes.

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.

Are gas water heaters being phased out?

The move in the final days of the administration will take non-condensing, natural gas-fired water heaters off the shelves by 2029 in a bid to reduce carbon dioxide emissions, which climate change advocates and President Biden say cause global warming.

Can an old water heater raise gas bill?

It is certainly possible for a water heater to increase your utility bill. Several factors can reduce the efficiency, including a unit that is too small, too old, bad water, or an incorrectly set thermostat can increase the energy bill.

What is the average life of a gas water heater?

Average Lifespan Of A Hot Water Heater

With regular inspection, draining, and flushing, you can expect a gas water heater to last anywhere from 8-12 years and an electric water heater to last anywhere from 10-15 years.

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.

How to tell if your anode rod is bad?

Poor water heater performance can sometimes stem from an anode rod that's overdue for replacement. If you notice signs of poor performance, such as discolored or rusty water, sulfuric or rotten egg smells, popping sounds from the tank, or high heating bills, inspect your water rod to determine if it needs replacement.

Does Home Depot replace water heaters?

The Home Depot partners with local, licensed and insured professionals to help homeowners choose the right water heater for their home. If you live within 30 miles of a Home Depot store and call us before noon at 1-800-HOME-DEPOT, our team offers same-day installation.

How often should a gas water heater be serviced?

When planning a water heater maintenance schedule, you should plan to have your water heater serviced at least once per year. The most important part of water heater maintenance is flushing the tank. If you don't flush it, sediment will build up inside your water heater's tank.

Should I replace my 20 year old water heater?

Absolutely! After 20 years, your tank water heater is well past its life expectancy. If you have a tankless water heater, it's approaching its life expectancy. At this point, you should expect additional repairs from wear and tear.

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.

Should I flush a 15 year old water heater?

If neither you nor a professional have flushed your water within the last five years, Water Heaters Now recommends not flushing it yourself.

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

In other words, it “sacrifices” itself to extend the life of the water heater. Most water heater manufacturers will recommend inspecting the condition of the sacrificial anode every one (1) to three (3) years and replacing it when it has been consumed more than 50%.

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