8 Common Storage Water Heater Problems and Their Solutions

Storage water heater problems are common in Singapore and homeowners seek to explore the different reasons behind these issues. Because storage water heaters are a vital component of modern households, ensuring we have access to hot water for bathing, cooking, and cleaning. However, like any mechanical device, they can face issues over time, disrupting our daily routines. 

Therefore, it is essential to know the reasons behind the malfunctioning storage water heaters. If you are a homeowner facing the mentioned issue, this article will help you a lot. In this comprehensive guide, we’ll delve into eight prevalent storage water heater problems and provide practical solutions to address them effectively, ensuring you can maintain a reliable supply of hot water in your home.

Common Storage Water Heater Problems in Singapore

To fix storage water heater problems, you need to explore the common reasons involved. This section will help you repair a storage water heater if you are facing any of the following storage water heater issues. 

1. Lack of Sufficient Hot Water


Insufficient hot water is common among storage water heater problems faced by many homeowners. It can occur due to various factors, including an undersized tank, high demand exceeding the heater’s capacity, or a malfunctioning heating element.


Start by checking the thermostat setting to ensure it’s adjusted appropriately for your household’s needs. If the setting seems appropriate but you’re still running out of hot water quickly, consider upgrading to a larger capacity water heater to meet your demand. 

Furthermore, sediment buildup in the tank can significantly hinder heating efficiency, so flushing the tank periodically, preferably annually, can help resolve this issue and restore hot water flow.

2. Water Leaks


Water leaks around the tank or from connections are alarming issues that require immediate attention. Loose fittings, corroded pipes, or a faulty pressure relief valve may cause leaks.


Thoroughly inspect all connections and fittings for signs of leakage and tighten or replace them as necessary. If the pressure relief valve is the culprit, you may need to replace it to prevent further leaks and ensure safe operation. 

Regular maintenance, including checking for corrosion and replacing worn-out components, can help prevent leaks from occurring and prolong the lifespan of your water heater.

Common Storage Water Heater Problems

3. Strange Noises


The water heater’s popping, rumbling, or banging noises indicate sediment buildup at the bottom of the tank.


Flushing the tank to remove sediment buildup can minimize this problem. It’s crucial to perform this maintenance task annually to ensure optimal performance and extend the lifespan of the water heater. If the noises persist after flushing, it may be a sign of other underlying issues. 

One of the common storage water heater problems you can suspect in this case is a defective heating element. These kinds of issues require professional inspection and repair. LS Plumber Singapore is your go-to service if required.

4. Foul Odors


A foul odor coming from hot water taps is often caused by bacteria reacting with the sacrificial anode rod inside the tank, resulting in a sulfur-like smell.


To eliminate the odor, flush the tank with a hydrogen peroxide solution to kill bacteria and neutralize the smell effectively. Additionally, consider replacing the anode rod with one made of a different material, such as aluminum or magnesium, to prevent future odor issues and ensure a clean, odor-free hot water supply.

5. Pilot Light or Ignition Problems


Gas-powered water heaters may face issues with the pilot light or ignition system, preventing the heater from heating water effectively.


Start by checking if the pilot light is lit. If not, follow the manufacturer’s instructions to relight it safely. Ensure that the gas supply is turned on and that there are no obstructions in the gas line. If the pilot light continues to go out or the ignition system fails, ask for professional assistance to diagnose and repair the issue promptly.

6. Rust and Corrosion


Rust and corrosion can develop over time, particularly in older water heaters, compromising their structural integrity and leading to leaks.


Regularly inspect the tank for signs of rust or corrosion, especially around the pressure relief valve or tank seams. If necessary, promptly resolve any corrosion by replacing affected components or the entire water heater to prevent further damage and ensure safe operation.

Storage Water Heater Problems Singapore

7. Fluctuating Water Temperatures


Fluctuating water temperatures can be a worrying sign and may indicate issues with the thermostat, heating elements, or sediment buildup.


Check the thermostat setting and adjust it if necessary to ensure constant water temperatures. If temperature fluctuations persist, flushing the tank can improve heating efficiency and stabilize water temperatures, providing a more comfortable and consistent hot water supply for your household.

8. High Energy Bills


A sudden increase in energy bills without a corresponding increase in hot water usage could indicate that the water heater is operating inefficiently.


Improve energy efficiency by insulating the tank and hot water pipes to reduce heat loss. Consider upgrading to a more energy-efficient model or implementing energy-saving practices. These practices include lowering the thermostat setting or using a timer to control heating cycles. 

Regular maintenance and inspections can also help identify and address issues. These issues can result in high energy consumption, ensuring optimal performance and cost savings in the long run.


By familiarizing yourself with these common storage water heater problems and their solutions, you can effectively troubleshoot issues as they arise. This troubleshooting ensures an uninterrupted hot water supply and prolongs the lifespan of your water heater. 

Remember to perform regular maintenance tasks and seek professional assistance for complex issues to keep your water heater functioning efficiently for years. With proper care and attention, you can enjoy a reliable hot water supply and peace of mind in your home.

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