What happens before a hot water heater goes out?

Author: Jazmyn Gorczany  |  Last update: Wednesday, April 16, 2025

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

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

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.

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 life expectancy of a hot 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.

Signs Your Water Heater Needs to be Replaced

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 do I know my water heater is bad?

Here are some warning signs that your hot water heater is going out:
  1. Your Water Heater Makes Strange Noises. ...
  2. Decreased or Varying Water Temperature. ...
  3. Low Water Pressure. ...
  4. Discolored or Rusty Water. ...
  5. Hot Water Shortage. ...
  6. Water Heater Leaks. ...
  7. Frequent Repairs. ...
  8. Age of Hot Water Heater.

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.

Can a bad breaker cause a water heater not to work?

Check the circuit breaker.

A tripped circuit can cause your electric water heater to stop heating water.

How long does it take a professional to replace a hot 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 you know if your anode rod is bad?

Top 3 Signs of Anode Rod Failure
  • Rusty or Disintegrating Anode Rod. Regular inspection of the anode rod is crucial to identifying signs of failure. ...
  • Foul Smell or Discolored Water. Another sign of anode rod failure is foul-smelling water or discolored water, often appearing brownish or rusty. ...
  • Noisy Water Heater.

What maintenance does a water heater need?

Care for your unit by checking these common issues annually: Check for leaks. Flush the tank. Test the temperature and pressure relief valve.

When should I worry about my hot 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.

What are the red flags on a water heater?

A faulty pressure relief valve, cloudy water, popping noises, and a lack of hot water are other potentially dangerous signs. If you see water leakage, contact a plumbing professional right away to detect the problems with your water heating system.

What are the symptoms of a bad thermostat on a hot water heater?

Signs Your Water Heater Thermostat Is Faulty
  • You have no hot water.
  • You're running out of hot water quickly.
  • The water is too hot.
  • It takes a long time for your water heater to heat the water.
  • You keep having to reset the high-temperature limit switch.

How to tell when a 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.

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.

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.

What is the average life of a water heater?

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 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.

What happens when a water heater dies?

Leaking Water

Over time, this tank may rust and develop cracks, leading to leaks. A leaking water heater is a severe problem and, if left unaddressed, could cause significant water damage. If you notice water pooling around your water heater or damp spots on the floor, walls, or ceilings, call a plumber immediately.

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

For a standard water heater replacement, installation usually takes between 2 to 3 hours. The technicians will remove the old unit, install the new one, and ensure everything is connected and working perfectly.

How do most water heaters fail?

According to IBHS, 69% of water heater failures are a result of a slow leak or sudden burst, causing significant water damage. Not only are these claims frequent, but IBHS also estimates that they cost an average of $4,444 per claim.

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.

Previous article
How can I make my car colder without AC?
Next article
Can a fan catch fire overnight?