A tankless water heater is a modern solution for providing hot water in a more energy-efficient manner. It eliminates the need for a storage tank and offers endless hot water on demand. However, despite their advantages, tankless water heaters can sometimes develop leaks. Water leakage is not only inconvenient but can also lead to significant water damage and increased utility bills.
Are tankless water heaters prone to leaks? Although they are less prone to leaks compared to traditional tank-style water heaters, tankless water heaters can still experience leaks. In this article, we will take a look at the usual causes of water leakage in tankless water heaters and offer tips on how to prevent these issues.
Common Causes of Water Leakage
Hard Water Buildup
One of the leading causes of water leakage in tankless water heaters is hard water buildup. Hard water contains high levels of minerals, such as calcium and magnesium. When hard water flows through the heater, these minerals can precipitate out and form scale deposits inside the unit. Over time, scale buildup can restrict water flow and reduce the efficiency of the heat exchanger.
The accumulation of scale can create pressure points and cause small cracks or fractures in the heat exchanger, leading to leaks. Additionally, the scale can clog the water passages, forcing water to find alternative routes and potentially leak through joints and seals. Regular maintenance, including descaling the unit, can help mitigate the impact of hard water on your tankless water heater.
High Water Pressure
Excessive water pressure is another common cause of leaks in tankless water heaters. The components of these heaters are designed to withstand a certain range of water pressure. When the pressure exceeds this limit, it can put undue stress on the internal components, such as pipes, valves, and the heat exchanger. This stress can cause these components to weaken or fail, resulting in water leakage.
High water pressure can also exacerbate existing minor issues, turning them into significant leaks. Installing a pressure-reducing valve (PRV) can help regulate the water pressure entering your home’s plumbing system, protecting your tankless water heater and other appliances from potential damage.
Incorrect Installation
Improper installation is a frequent culprit behind water leaks in tankless water heaters. Even small errors during installation can lead to significant issues down the line. Common mistakes include improper sealing of connections, incorrect pipe sizes, and inadequate support for the heater. These errors can result in leaks at the connection points or cause stress on the heater’s internal components.
It is crucial to hire a professional plumber with experience in installing tankless water heaters. Professional installation ensures that all components are correctly fitted, connections are properly sealed, and the unit is securely mounted. This can prevent leaks and other issues that may arise from poor installation practices.
Component Failure
Over time, the components of a tankless water heater can wear out and fail, leading to leaks. The heat exchanger, valves, and pipes are particularly susceptible to wear and tear. The heat exchanger, which transfers heat from the burner to the water, can develop cracks due to thermal stress. Valves and pipes can also deteriorate due to constant exposure to hot water and pressure fluctuations.
Signs of component failure include visible water drips, unusual noises, and a decrease in heating efficiency. Regular inspections and timely replacement of worn-out components can help prevent leaks and extend the life of your tankless water heater.
Corrosion
Corrosion is a natural process that can affect any metal component exposed to water and oxygen. In tankless water heaters, corrosion can occur in the heat exchanger, pipes, and other metal parts. The presence of impurities in the water, such as chlorine and other chemicals, can accelerate the corrosion process.
Corrosion weakens the metal, making it more prone to leaks. Once a leak starts due to corrosion, it can quickly worsen, leading to more significant water damage. Using water softeners and installing a corrosion-resistant unit can help mitigate the risk of corrosion in your tankless water heater.
How do I protect my tankless water heater?
Preventing water leaks in tankless water heaters requires regular maintenance and proactive measures. Here are some tips to help keep your unit in good working condition.
Regular Maintenance
Performing regular maintenance on your tankless water heater is essential to prevent leaks and ensure optimal performance. This includes checking for signs of wear and tear, cleaning the unit, and inspecting connections for any potential leaks. Scheduling annual maintenance with a professional plumber can help identify and address issues before they become major problems.
Flushing the Unit
Flushing your tankless water heater periodically is crucial to remove scale buildup caused by hard water. This process involves running a descaling solution through the heater to dissolve and flush out the mineral deposits. Flushing the unit every six months to a year, depending on the hardness of your water, can significantly extend the life of your heater and prevent leaks caused by scale buildup.
Water Softener Benefits
Installing a water softener can help reduce the impact of hard water on your tankless water heater. Water softeners work by removing the minerals that cause scale buildup, thus protecting the heater’s internal components. While a water softener requires an initial investment, it can save you money in the long run by reducing maintenance costs and prolonging the life of your water heater.
Professional Inspection
Regular professional inspections are vital for maintaining your tankless water heater. A trained technician can identify potential issues, such as worn-out components or early signs of corrosion, and address them before they lead to leaks. Professional inspections can also ensure that your heater is operating efficiently, helping you save on energy costs.
Aging and Its Impact on Tankless Water Heaters
As tankless water heaters age, their internal components gradually wear out, leading to decreased efficiency and increased wear and tear. The heat exchanger, which heats the water as it flows through the unit, is particularly susceptible to damage over time. With prolonged use, the heat exchanger can become corroded, damaged, or worn out, resulting in leaks and potential system failures.
Just a friendly reminder to keep an eye on your unit. Regular maintenance and keeping an eye out for any issues are super important. Don’t forget to check the heat exchanger for any signs of damage and corrosion – catching these early is key to avoiding bigger problems down the line. Keeping up with regular maintenance can really help your tankless water heater last longer and work more efficiently.
