What to do when the water heater leaks

In situations where hot water supply is frequently unavailable, tenants often choose to install water heaters of various capacities in order to avoid having to heat water on the gas stove and to ensure that the entire family has access to the necessary resources for daily personal hygiene. Modern household appliances are known for their reliability, and if used correctly, they can last for many years. However, there are instances when unforeseen malfunctions occur, such as a water heater leaking. Let’s explore the possible reasons behind a sudden boiler leak and discuss what steps can be taken in such a situation.

What to do first

Initially, in the event of a boiler leakage, it is vital to promptly disconnect it from the power supply. Following that, a thorough visual examination should be conducted to identify the precise location of the water leakage. If the leakage is observed from the side or top, this indicates the existence of a hole in the body.

Note! The presence of water drips serves as the initial warning sign of a malfunction within the appliance. Procrastination should be avoided as it may necessitate the purchase of a new device.

If there is water leaking from the bottom of the water heater, it is a sign that the magnesium rod needs to be replaced and the heating element needs to be cleaned, as it may be clogged with lime deposits. However, a definitive diagnosis can only be made after a thorough inspection. In the event that the water heater is leaking and water is seeping out from under the plugs, causing drips through the water supply and drainage hoses, it is important to immediately replace the heating element and check for any leaks in the connections. Regardless of the reason for the water heater leak, it must be dismantled in order to determine the cause. This involves draining the water, removing it from its fasteners, and disassembling it. Although these tasks can be performed by a homeowner, a professional is needed to accurately diagnose the specific issue causing the leak. Before starting any work, it is important to gather the necessary tools for dismantling:

• A wrench that can be adjusted to different sizes, allowing you to easily loosen the largest nut on the item;
• A dedicated tester or multimeter;
• A screwdriver and a blade;
• A collection of pipe wrenches;
• An operational rubber hose for draining water.

Main causes of leaks and methods of their elimination

If your boiler is leaking, the initial step is to identify the source of the leak. There are numerous possible causes, and we have attempted to outline a handful of the most frequently encountered ones.

Deformation of the casing

The problem of the outer shell of the boiler becoming deformed can arise the day after installation. It is not the manufacturer’s responsibility, but rather the fault of the installer because, typically, this situation occurs when the safety valve is forgotten to be connected during the installation of the boiler. This valve is positioned on the water supply line to the boiler, between the stopcock and the inlet to the tank. This small device is responsible for safeguarding the tank from overfilling, which can lead to deformation: once the tank is completely filled with water, the valve is triggered and cuts off the water supply. Consequently, the boiler starts leaking in less than 24 hours.

If the valve has already been installed, but water continues to flow through the supply pipe, it’s necessary to remove the valve and replace it with a new one. Any homeowner, even without special training, can handle this type of repair.

In some cases, deformation may occur due to the use of low-quality pipes during the installation of the device. As a result, hydraulic shocks caused by pressure changes will be transmitted to the inner vessel, gradually causing its destruction.

If deformation occurs in the boiler, it cannot be repaired and must be replaced with a new one. It’s important to carefully follow the proper connection technology when installing the new product.

Factory defect

If there is a leak in the upper part of the boiler but no visible deformities in the tank, it is possible that there is a factory defect even if the magnesium rod was properly installed during connection and replaced during operation in accordance with regulations. If the product is still under warranty, it is advised to return it to the seller before causing any water damage to your neighbors downstairs.

Modern water heaters are designed in such a way that the tank cannot be repaired or welded. Attempting to weld the tank would break the enamel layer around the hole, leading to corrosion in another area of the tank. The cost of repairing such damage is almost equivalent to purchasing a new boiler, and any modifications made to the repaired tank would not enhance the aesthetics of your bathroom.

Spent heating element

If there is water leaking from beneath the lid of the storage tank, it is probable that the heating element has accumulated an excessive amount of scale and should be replaced. The first step is to purchase a replacement heating element from a store that specializes in water heater spare parts. Then, the old heating element needs to be dismantled and the inner surface should be cleaned using a combination of vinegar and baking soda. This mixture is effective at corroding any scale buildup.

Additionally, the special magnesium rod should be replaced along with the heating element.

Poor installation of the unit

To resolve the issue of liquid leakage from under the sealing ring of the heating element, one can try tightening the nuts more securely to eliminate the leak. In some cases, the leak may occur at the fixing bolts of the heating element, which would necessitate the purchase of a new heater as welding is not a viable option due to the potential warping of the inner container’s thin walls.

A loose connection is a common cause of drips forming on the cold water inlet and hot water outlet pipes. This is often the case when self-installation is carried out with incorrect sealing materials or low-quality fittings.

Worn gasket

If water is leaking from the inspection hole in the plastic lid at the bottom of the water heater, it is possible that the rubber gasket on the flange has become less elastic. To confirm this, it is necessary to disconnect the appliance, remove the bottom cover, and visually inspect the source of the leak.

If it is determined that the gasket is indeed the problem, it will need to be replaced. We should purchase an exact replacement from the store – when making the purchase, inform the seller of the model number of your boiler to ensure a perfect fit for the new gasket.

Extending the operation

To ensure optimal functionality and longevity of the water heater without the need for extensive repairs, it is recommended to follow the guidelines below.

1. During installation, if the pressure within the water pipe exceeds 3 atmospheres, it is advisable to install a pressure reducer between the product’s inlet branch and the supply pipe. The reducer should be set to 2 atmospheres, which is the ideal pressure for the water heater’s storage tank.
2. Regularly clean the internal tank and heating element to prevent the buildup of limescale and salt deposits, thereby increasing the lifespan of the product.
3. It is essential to monitor the condition of the magnesium rod in order to ensure the continuous protection of the tank’s inner surface from corrosion. If the rod’s length decreases to a critical level, it should be replaced promptly.
4. Prior to accessing the tank, experts in water heater maintenance recommend the installation of a filter to remove hardness from tap water and capture unwanted impurities.

Note: To maximize the lifespan of the water heater, adjust the temperature to not exceed 50°C.

There are several factors that can cause water heater leaks, however, it is important for individuals to promptly disconnect the appliance from the power source and conduct a thorough visual examination. It is not advisable to attempt opening the boiler without having a clear understanding of the underlying issue, as doing so can potentially exacerbate the situation and render it unmanageable.