The answer to 'why is my boiler leaking water' is that there are several common causes for a leaking boiler, including a faulty pressure relief valve, a cracked boiler tank, or a problem with the boiler's water supply system. Boiler leaks can range from a slow drip to a steady stream of water, and they should be addressed promptly to prevent water damage and ensure the safe and efficient operation of your heating system.
If you notice your boiler is leaking, the first step is to identify the source of the leak. Check the pressure relief valve, connections, and any visible signs of cracks or corrosion on the boiler tank. If the leak is coming from a specific component, you may be able to replace that part yourself. However, if the leak is more extensive or you're unsure of the cause, it's best to call a professional HVAC technician to diagnose and repair the issue.