What Can Cause a Water Heater to Explode?

Although it’s considered rare for a water heater to explode, it’s good to establish that such incidents can occur and pose a serious threat to the safety of individuals and property. Brian Wear Plumbing, your go-to local team for water heater repair in Columbia, MO, explores the possible causes of water heater explosions and why it’s important for homeowners to understand water heater safety.

Overheating and Pressure Buildup

One of the primary causes of water heater explosions is overheating, which can result in excessive pressure buildup inside the tank. Water heaters are equipped with a temperature and pressure relief valve (TPR valve) that is designed to release pressure if it reaches dangerous levels. If the TPR valve malfunctions or is blocked, it can cause the pressure to continue building up until the tank explodes. During water heater installation, our technicians often advise homeowners to have this component periodically checked and replaced if needed.

Sediment Buildup and Corrosion

These issues are often responsible for the need for water heater replacement. But apart from that, sediment buildup and corrosion can also lead to water heater explosions. Over time, minerals and other debris in the water supply can settle at the bottom of the tank, forming a thick layer that insulates heat from the burner. This causes the temperature to rise rapidly and eventually leads to overheating and pressure buildup. In addition, corrosion weakens the metal of the tank, making it more susceptible to rupturing.

Flushing the tank of your traditional water heater regularly to remove sediment and inspecting for any signs of corrosion can significantly reduce these risks and extend the lifespan of your unit.

Gas Leaks

If you have a gas-powered water heater, gas leaks can also increase the risk of an explosion. Gas leaks not only pose a danger of fire and carbon monoxide poisoning, but they can also ignite and cause an explosion if there is any source of open flames or sparks nearby. It’s crucial to have any gas leaks promptly repaired by a professional and to ensure that all gas connections are properly sealed and secure.

Trust Brian Wear Plumbing to provide quality water heater services, whether you own a traditional tank-type or a tankless water heater. Our technicians can help keep your appliance running safely and efficiently, and we are always ready to answer any questions or concerns you may have. Contact us today to schedule an appointment. We serve Columbia, MO, and the surrounding areas, including Ashland and Hallsville.