Preventing Water Heater Explosions - Causes, Signs, and Prevention Measures

Last Modified : Tue Apr 02 2024 By: Thilina Rathnayaka

Water heater explosions can occur due to a buildup of pressure within the tank, a malfunctioning pressure-relief valve, or a gas leak. To prevent a water heater explosion, it is important to have regular inspections and maintenance, keep the area around the water heater clear, and be aware of warning signs such as loud noises or gas leaks.

Water heaters are an important part of any household, providing hot water for various needs such as showers, laundry, and more. However, if not properly maintained, a water heater can become a potential hazard. One of the most serious hazards that can occur with a water heater is an explosion. In this article, we will discuss the causes of water heater explosions, the warning signs of an impending explosion, and how to prevent such an event.

What causes a water heater to explode?

There are several potential reasons for a water heater explosion, but the most common cause is a buildup of pressure within the tank. This can occur when the water inside the tank becomes too hot or when there is a malfunction in the pressure relief valve. Another cause could be a gas leak, which occurs when the pipes or connections that supply gas to the water heater become damaged or loose.

Another potential cause of a water heater explosion is a blocked or restricted vent. The vent is responsible for releasing excess pressure that builds up within the tank. If the vent becomes blocked, pressure will continue to build up until it reaches a point where the tank can no longer contain it, leading to an explosion.

Signs your water heater is going to explode

There are several warning signs that indicate a water heater is about to explode. One of the most obvious signs is a loud, rumbling noise coming from the tank, indicating that pressure is building up inside. Another sign is water leaking from the tank or pipes, caused by a malfunctioning pressure relief valve. Additionally, if you smell gas near the water heater, it is crucial to evacuate the building immediately and call a professional to inspect the water heater.

Can water heater explode if turned off?

It is possible for a water heater to explode even if it is turned off. If the pressure inside the tank is too high, it can still cause an explosion. Additionally, if there is a gas leak, the water heater does not have to be in operation for an explosion to occur.

Can an electric water heater explode?

While less common, electric water heaters can also explode. This is typically caused by a malfunction in the heating elements or a buildup of pressure within the tank.

How to prevent water heater explosion

To prevent a water heater explosion, it is important to have the water heater inspected and serviced regularly by a professional. This will ensure that any potential problems are identified and repaired before they become serious. Additionally, it is essential to keep the area around the water heater clear of flammable materials and to make sure that the vent is not blocked. Lastly, if you smell gas or hear strange noises coming from the water heater, turn it off immediately and call a professional.