Can a hot water tank last 20 years?

Author: Prof. Uriah Funk PhD  |  Last update: Thursday, April 24, 2025

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.

Should I replace a 20 year old hot 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 is the life expectancy of a hot water tank?

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.

Is a 30 year old water heater safe?

There is little danger in running an ``expired'' water heater past it's expected lifespan. You might wake up one morning to a cold shower, or in worst case a leak will leave water on the floor.

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.

When Should A Water Heater Be Replaced?

What are the signs of a water heater 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.

What is the life expectancy of a water tank?

The answer to this question depends on so many factors that it is hard to put a precise timeframe on the life expectancy of a water tank, however, you can expect a tank to last anywhere from 10 years up to 30+ years depending on the material it is made from, where it is positioned and how much use it gets.

Can a hot water tank last 25 years?

While it's impossible to tell exactly how long any given water heater will last because there are so many variables involved in this equation, most experts say that the average lifespan for these appliances is 12-25 years.

Should I flush a 20 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.

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.

What is the most reliable brand of hot water heater?

The Lifestory Research 2024 America's Most Trusted® Water Heater ranking is based on 6,547 opinions of people surveyed in the United States over the last 12 months. The most trusted water heater brands in order were Bosch, Whirlpool, Rheem, GE, Kenmore, AO Smith, Ruud, Bradford White, and Rinnai.

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.

Which water heater brand lasts 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.

How to tell if a hot water tank is working?

If the pilot light has gone out, the water heater will not be able to ignite the gas to heat water. If none of the previous fixes have any effect, there may be a problem with the heating element. Use a multimeter to test for continuity, and if you can't get a reading, it might be time to call a repair company.

Is it worth fixing a 20 year old water heater?

According to Consumerreports.org, gas water heaters usually last 10 years and tankless water heaters last 20+ years. So, if your water heater is near the end of it's life, it would be wise to replace instead of repair--especially if the repair is costly.

What happens if you never drain your water heater?

The longer your water heater goes without a drain-and-flush, the more sediment and minerals will accumulate at the bottom of the tank. Eventually, this causes scaling. Ever noticed that hard, mineral buildup on your sink faucets and shower heads? That's scale: accumulated mineralization.

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.

Should I replace my 21 year old water heater?

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 much does a hot water tank cost per year?

According to the Department of Energy, the average American household spends between $400 and $600 each year on water heating alone. This cost will vary depending on the electricity rates in your area and your water heating unit's efficiency.

How do you tell if you need a new water heater?

5 signs you need a new water heater
  1. Your older water heater is getting up there in age. ...
  2. It's making strange noises. ...
  3. You're getting rusty water out of the tap. ...
  4. Your hot water doesn't last as long as it used to. ...
  5. There are water puddles around the unit.

How much does it cost to replace a 50 gallon hot water heater?

The average cost to replace a 50-gallon water heater is $700 to $1,800 for an electric unit or $1,000 to $3,100+ for a gas unit, including labor. A 50-gallon water heater costs $500 to $2,100 for the unit alone, depending on the fuel type, energy efficiency, features, and brand.

How do I know if my water tank is bad?

Signs Your Hot Water Heater Is Going to Fail
  1. Water leaking from the heating tank. ...
  2. Age of the water heater. ...
  3. Running out of hot water quickly. ...
  4. Inconsistent water temperature in the shower. ...
  5. Discolored water coming from faucets. ...
  6. Unusual noises coming from the water heater. ...
  7. Lower water pressure.

Should I replace the 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.

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