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Boiler Leaking Water

Why your Boiler is Leaking Water and How to Fix it

Boilers are the unsung heroes of our homes, silently working away to keep us warm and comfortable. However, a leaking water boiler can quickly turn into a nightmare, causing damage to your property and potentially putting your safety at risk. In London, where chilly weather is no stranger, addressing boiler issues promptly is crucial. In this article, we’ll explore common reasons why your boiler might be leaking water and how to effectively fix them, with a focus on eco-friendly solutions provided by reputable services like Ecofix Boiler Repair London.

Pressure Problems:

Low pressure: One of the most common causes of boiler leaks is low water pressure. This can be due to a variety of reasons, such as a leak in the system, bleeding radiators, or a faulty pressure relief valve.

High pressure: Conversely, excessively high pressure can also lead to leaks. This often occurs when the pressure relief valve fails to operate correctly.


  • Check the pressure gauge on your boiler. If it’s below 1 bar or above 2.5 bars, it could indicate a problem.
  • For low pressure, try pressurizing the system following your boiler’s manual instructions.
  • If the pressure relief valve is faulty, it may need to be replaced by a professional boiler repair service like Ecofix Boiler Services London.

Corrosion and Rust:

Over time, the internal components of your boiler can corrode, leading to cracks and leaks. Rust is a common culprit, especially in older boilers or those with poor maintenance records.


  • Regular boiler servicing is essential to prevent corrosion. Schedule annual maintenance with a reputable boiler services provider in London to ensure your boiler is in top condition.
  • In severe cases of corrosion, parts may need to be replaced. Ecofix Boiler Repair London offers expert solutions for diagnosing and fixing corrosion-related leaks.

Faulty Seals and Gaskets:

Seals and gaskets play a vital role in keeping your boiler leaking water tight. If these components degrade or become damaged, leaks can occur around joints and connections.


  • Inspect seals and gaskets for signs of wear and tear. If you notice any cracks or deterioration, they should be replaced promptly.
  • Ecofix Boiler Repair London specializes in sourcing high-quality replacement parts and ensuring proper installation for a leak-free seal.

Condensate Pipe Issues:

Modern condensing boilers produce condensate as part of their operation, which is expelled through a dedicated pipe. If this pipe becomes blocked or frozen, water can back up into the boiler, causing leaks.


  • Check the condensate pipe for blockages or obstructions, especially during colder weather.
  • Thaw frozen pipes gently using warm water or a hot water bottle. If blockages persist, consider rerouting the pipe or installing insulation to prevent future issues.


A leaking boiler is not something to be ignored, especially in a bustling city like London where reliable heating is essential. By understanding the common causes of boiler leaks and taking proactive measures to address them, you can ensure the continued efficiency and safety of your heating system. Remember to prioritize eco-friendly solutions and enlist the expertise of trusted services like Ecofix Boiler Repair London for reliable repairs and maintenance. With the right care and attention, your boiler can continue to keep you warm and cozy for years to come.

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