Water Heater Explosions
Your water heater works hard. It heats your morning shower, helps your dishwasher do its job, and keeps things comfortable—all day, every day. You probably don’t think of your water heater much at all. That is, until something goes wrong.
Water heater explosions are very rare, but when they happen, they can cause serious water and fire damage to your home. The good news is that most explosions are preventable. With a little know-how and regular maintenance, you can keep your water heater running safely for years to come.
Key Takeaways
- Water heater explosions are rare but can cause significant fire and water damage.
- They can be triggered by excessive pressure buildup, a faulty temperature and pressure relief valve, or sediment accumulating inside the tank.
- Warning signs of an impending explosion include unusual noises, rust-colored water, and corrosion around the tank.
- Routine maintenance, like flushing the tanks annually and testing the relief valve every year, goes a long way toward preventing a tank explosion.
- If your water heater does cause fire or water damage, contact SERVPRO for fast, professional restoration.
What Causes Water Heater Explosions?
Most water heaters run reliably for years, but a few key issues can push them toward failure. Knowing what to look out for is the first step toward keeping your home safe.
Excess Pressure Buildup
Your water heater is built to handle pressure, but only so much of it. When pressure inside the tank gets too high, it can rupture. This usually happens when the temperature is set too high or the relief valve isn’t working the way it should.
Faulty Temperature and Pressure Relief Valve
Your temperature and pressure relief valve acts as your water heater’s safety net. Its job is to release pressure before it gets dangerous. When that valve wears out or stops working, the pressure has nowhere to go. That’s when an explosion could happen.
Sediment Buildup
Minerals from your water supply will gradually settle at the bottom of your tank. Over time, that buildup forces your water heater to work harder, which can lead to overheating and eventually cause the tank to fail.
Corrosion and Rust
Over time, water heater tanks can develop rust and corrosion. Once rust sets in, it can weaken the tank’s structure. Add in extra heat and pressure, and the risk of an explosion shoots up.
Warning Signs of a Water Heater Explosion
Your water heater will usually give you hints before things get serious. Some major red flags to keep an eye out for:
- Popping or rumbling noises: Hear strange sounds coming from your tank? That’s often sediment buildup forcing your water heater to work overtime.
- Rust-colored water: If the hot water flowing out of your taps looks discolored or rusty, corrosion might be developing inside your tank.
- Visible leaks or moisture: If you notice water pooling around the base of your tank or moisture on the tank itself, that’s a good indicator the tank is leaking.
- Faulty T&P valve: If your temperature and pressure relief valve is leaking or looks corroded, it may not be able to do its job when needed.
If you notice any of these warning signs, turn off your water heater immediately and call a licensed plumber. It’s always better to be safe rather than sorry when it comes to your water heater.
Tips to Prevent a Water Heater Explosion
A little bit of regular attention goes a long way toward preventing a water heater explosion. Here’s what you can do to keep things running smoothly:
- Schedule annual maintenance: Hire a licensed plumber to inspect your water heater once a year to catch small issues before they turn into big problems.
- Flush your tank: Flushing your tank every year will remove sediment buildup that can cause overheating and put unnecessary stress on your water heater.
- Test your T&P valve: Check your temperature and pressure relief valve once a year to make sure it’s working properly. If it looks corroded or isn’t functioning correctly, replace it right away.
- Clear the area around your tank: The space around your water heater should be clean and clutter-free. Never store flammable materials near your tank.
- Pay attention to warning signs: Strange noises, discolored water, and visible leaks are big red flags that your water heater needs help.
- Know your water heater’s age: Most water heaters last 8 to 12 years. If yours is getting up there in age, start thinking about a replacement.
Handling Fire or Water Damage Following a Water Heater Explosion
If the worst happens and your water heater explodes, you could face major water damage, structural damage, or even a fire in your home. The most important thing is to get your family to safety and call emergency services right away.
Once the immediate danger has passed and the dust has settled, SERVPRO is here to help. Our experienced restoration professionals will respond quickly to assess the damage and get your home back in order.
You don’t have to face a water heater explosion alone. Contact SERVPRO today.
FAQs
What are the warning signs of a water heater explosion?
The warning signs of a water heater explosion include popping or rumbling noises, rust-colored water, visible leaks around the tank, and a faulty T&P valve. If you notice any of these signs, turn off your water heater and call a plumber immediately.
What causes a water heater to explode?
Water heater explosions are usually caused by excess pressure buildup inside the tank, a faulty temperature and pressure relief valve, sediment accumulation, or corrosion and rust weakening the tank’s structure.
How common are water heater explosions?
Explosions in water heaters are rare. Most modern water heaters include built-in safety features, like the T&P valve, that prevent dangerous pressure buildup. You can further lower the risk of an explosion by properly maintaining your tank.
How do I prevent a water heater explosion?
Prevent a water heater from exploding by scheduling annual professional inspections, flushing the tank each year to remove sediment, testing your T&P valve regularly, and paying attention to warning signs like unusual noises or discolored water.