The answer to 'why is my boiler leaking water' is that there are several common causes, including a cracked boiler tank, loose fittings, or a faulty pressure relief valve. Leaks can also be caused by corrosion, mineral buildup, or damage from age and wear.
Symptoms of a leaking boiler include puddles of water around the unit, dripping noises, or a drop in water pressure. If the leak is caught early, some small leaks may be fixable with simple repairs like tightening fittings or replacing washers. However, major cracks or corrosion often require professional repair or replacement of the boiler.