How often do water heaters burst?

Author: Ms. Maida Blick Jr.  |  Last update: Friday, December 12, 2025

According to the Insurance Institute for Business & Home Safety, the average storage-type water heater only lasts about 10 years. By the 9-year mark, more than 40 percent have burst, and just 6 years after setting up your new model, there's still a 15 percent chance it will explode all over your basement.

How likely is a water heater to burst?

While rare, water heater explosions can and do happen. Knowing the warning signs and when replacement is needed can help avoid potential catastrophe.

How common are hot water heater explosions?

How Common Are Water Heater Explosions? Thanks to modern safety features and regulations, water heater explosions are rare. In 2022, 108 incidents involving hot water heaters were reported to the United States Consumer Product Safety Commission.

How likely is a water heater to leak?

Water heaters with a tank style that are more than 15 years old leak more frequently than heaters with digital controls. As the system ages, components wear down, the water loses heat over time, and leaks occur more frequently. Water heaters may leak as a result of age.

What can make a water heater burst?

  • Excessive Pressure : If the pressure inside the tank exceeds its design limits, it can lead to a rupture.
  • Temperature Malfunction
  • Corrosion and Rust
  • Flammable Materials
  • Electrical Issues
  • Improper Installation
  • Sediment Build-up

When Should A Water Heater Be Replaced?

How to prevent a water heater explosion?

Tips to Avoid Water Heater Explosions
  1. Ensure your heater's pressure relief valve is fully functional, replace if faulty.
  2. Always keep your heater's temperature at 120-125 degrees. ...
  3. Ensure your heater is serviced and cleaned out once every year.
  4. Always ensure your plumber is a licensed professional.

Is it normal for a hot water heater to pop?

What Is Causing a Popping Sound in My Water Heater? Minerals and other particles in your water supply can cause sediment and scale buildup. The popping noise comes from boiling water beneath the sediment. While the noise is not dangerous, excessive sediment can result in several problems for your water heater.

Does homeowners insurance cover a water heater?

Whether or not homeowners insurance covers water heater leaks depends on the specific circumstances of the leak and the terms of your policy. In general, if the leak is sudden and accidental, and not caused by your negligence, your policy will likely cover the cost of repairs.

What is the life expectancy of a water heater?

While today's water heaters are better designed than older models, they still require regular maintenance in order to prolong their lives. 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.

Where do most water heaters leak from?

The drain valve, located at the bottom of the tank, is the likely source of water heater leaks. Check the drain valve for escaping water. In the case that a small drip is occurring, a garden hose cap or sprayer makes a quick leak fix until the valve can be replaced.

What sound does a hot water heater make before it explodes?

Popping Noise

Another sign of a potential explosion waiting to happen in your water heater would be those frequent popping noises you hear as sediment buildup settles to the bottom of the tank. The sediment blocks the heating element, creating a barrier between the heat source and the water in the tank.

What are the signs that your hot water heater is going out?

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 failure rate of water heaters?

With the average lifespan of a residential water heater between 10 and 20 years, more than 25% of the water heaters in service are nearing the end of their useful life at any given point in time. Water heater failure can cause significant damage to the home, particularly if the water heater was not properly maintained.

How common is a water heater explosion?

While rare, residential water heater explosions do occur and can be deadly. Explosions are possible with both gas and electric tank water heaters, primarily those that are poorly maintained.

Does homeowners insurance cover water heater explosion?

A water heater explosion can cause significant damage to your home, and thankfully, most homeowners insurance policies do cover such events. However, the coverage may be subject to certain conditions, such as proper maintenance and adherence to safety codes.

How urgent is a leaking water heater?

If water is gushing out or if the leak is causing immediate damage, it is an emergency. In these situations, shutting off the water supply and calling a professional should be your immediate steps. Moreover, excessive heat can also turn the situation into an emergency.

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.

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.

Will home warranty replace old water heater?

The good news is that most standard home warranty plans will cover your water heater.

Why is plumbing not covered by homeowners insurance?

Homeowners insurance typically won't cover plumbing problems that are considered preventable. Neglect would be a reason you might not be covered. For example, if your pipes have been leaking for weeks or months and it is visible and apparent, insurance likely won't cover the damage.

How do you water heater maintenance?

What's a good annual water heater maintenance checklist?
  1. Check for leaks.
  2. Flush the tank.
  3. Test the temperature and pressure relief valve.
  4. Inspect the sacrificial anode.
  5. Clean air intake vents.
  6. Check the venting system.
  7. Insulate the pipes and tank.
  8. Check thermostat settings.

How common is a hot water heater burst?

According to the Insurance Institute for Business & Home Safety, the average storage-type water heater only lasts about 10 years. By the 9-year mark, more than 40 percent have burst, and just 6 years after setting up your new model, there's still a 15 percent chance it will explode all over your basement.

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.

What causes a water heater to burst?

If too much pressure builds up inside your water heater, it will eventually burst. Water heaters feature a temperature and pressure relief valve, but over the years, the pressure can still wear down your tank.

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