Why is My Boiler Leaking Water?

Boiler Leaks: Common Causes and Solutions

If you've noticed water leaking from your boiler, it's important to address the issue promptly to avoid further damage and potential safety hazards. In this blog post, we will explore the common causes of boiler water leaks and provide practical tips to help you troubleshoot and resolve the problem. As a trusted HVAC company in Taunton, MA, Cotti-Johnson HVAC, Inc. is here to assist you with any boiler-related concerns.

1. Faulty Pressure Relief Valve

One of the most common reasons for a boiler to leak water is a malfunctioning pressure relief valve. This valve is designed to release excess pressure from the system, preventing potential explosions. If the valve is faulty or worn out, it may not close properly, leading to water leakage. We recommend checking the valve for signs of damage or mineral deposits and replacing it if necessary. 

2. Corroded Heat Exchanger

Over time, the heat exchanger in your boiler can become corroded due to mineral buildup or acidic condensation. This corrosion can cause small cracks or holes, resulting in water leaks. If you suspect a corroded heat exchanger, it's crucial to have it inspected and repaired by a professional HVAC technician. Regular maintenance, such as descaling or flushing the system, can help prevent corrosion. 

3. Excessive Pressure

High pressure within the boiler system can cause water to leak from various points, including valves, seals, or connections. This issue may be caused by a faulty pressure reducing valve, a malfunctioning expansion tank, or a problem with the pressure relief valve. To address this problem, it's recommended to check and adjust the pressure settings according to the manufacturer's guidelines. If the issue persists, it's best to consult a qualified HVAC technician. 

4. Leaking Pipe Connections

Another common cause of water leakage is loose or damaged pipe connections. Over time, pipes can develop leaks due to wear and tear, improper installation, or corrosion. Inspect all visible pipe connections for signs of water leakage and tighten or replace any damaged fittings. If the problem persists, it's advisable to seek professional assistance to avoid further damage to your boiler system.

5. Internal Corrosion

Internal corrosion can occur within the boiler tank or pipes, leading to water leaks. This corrosion is often caused by untreated or inadequately treated water, which can result in the formation of rust and other corrosive substances. Regular water treatment and the use of corrosion inhibitors can help prevent internal corrosion and subsequent leaks. 

Prompt Help for Leaking Boilers

Identifying the cause of a boiler water leak is crucial for ensuring the safe and efficient operation of your heating system. While some troubleshooting and maintenance tasks can be performed by homeowners, it's always recommended to consult a professional HVAC technician for a comprehensive inspection and repairs.

At Cotti-Johnson HVAC, Inc., we specialize in boiler services and can provide expert assistance to address any issues you may encounter. Contact us today to schedule a consultation and keep your boiler running smoothly.