Water heaters have a limited lifespan of around a decade or more, depending on the manufacturer's specifications. As water heaters age, their components deteriorate. This wear and tear can be a source of hazards in your home. Therefore, if your hot water system is nearing the end of its usable life, replace it to avoid exposing your household to the following risks.

Water heater explosion

The primary cause of a water heater explosion is pressure. Old systems are susceptible to this risk due to the following reasons:

Worn anode rod

An anode rod is a sacrificial metal rod installed inside the water heater to protect the tank from corrosion. It attracts minerals in the water through an electrochemical process and prevents them from reacting with the metal water tank. If the anode rod wears out entirely, it won't be able to protect the tank. The chemical reaction between the minerals and the metal tank will cause the tank to rust. A rusted hot water tank may be unable to withstand pressure buildup during heating, which can cause an explosion.

Failing expansion tank

Some water heaters have an expansion tank that relieves pressure buildup during water heating. The tank has a diaphragm that separates it from the water heater. The diaphragm allows water to enter the expansion tank only when there is a pressure buildup in the hot water tank. Old expansion tanks may have a worn diaphragm, which compromises air pressure levels. Consequently, the tank may fail to relieve pressure in the water heater, increasing the risk of an explosion.

Failed temperature and pressure relief valve

A temperature and pressure relief (T&P) valve is used in place of an expansion tank to relieve excess pressure in the water heater. When the pressure in the tank is high, the valve opens and discharges hot water and steam through the discharge pipe. A failing valve can fail to open when there is high pressure in the tank, thereby causing the tank to explode.

The above three components are crucial safety features for your water heater. It's common for these components to fail regularly in old water heaters. If you have repaired these safety devices multiple times, consider replacing your hot water system.

Gas leaks

Gas leaks occur in old water heaters due to pressure buildup in the tank and cracks in the water heater. Old gas supply lines can also cause leaks. A gas leak is harmful to households, and it can also cause a gas explosion around your water heater. Replacing the system enables you to install new gas lines and avert these hazards.

Is your old water heater exhibiting the above hazards? Contact your plumber for hot water replacement.