Water Dripping from the Boiler

No matter what type of boiler you have, all of them can have a leak or drip water. The problem is a common one and can be as a result of different factors.

If you notice any water dripping from your boiler, the first step is to turn off and disconnect the water supply. You will need to empty any water that is remaining in the boiler. In some cases, the manual could help point you to what could be causing the leaks. If it does not, any of these could be the problem.

The expansion tank has failed

If the expansion tank is the problem, there is a quick and simple experiment that you can run to help you figure it out. All you have to do is watch the boiler as it heats the water. If the leak starts after running the burner for some time, the expansion tank is the cause of the problem.

Faulty safety valve

The safety valve might be faulty. The valve should help to regulate the pressure in the boiler. The valve opens and closes on its own. If it does not close properly, it can lead to leakage. The main reason for the valve not closing properly is usually debris that blocks the path of the valve.

The safety valve can also fail as a result of increased and constant pressure within the system. This is usually as a result of build-up of calcite and limescale in the system.


Over time, the pipes and valves in your system will become weak. The hot water chips away at the metal and over a long period, the pipes might start to leak. We can help conduct minor repairs that will help resolve the problem. However, if most of the pipes are affected, then you have no chance but to replace the boiler.

To help protect your pipes against corrosion, it is essential to have your boiler serviced regularly and use a high-quality inhibitor that will protect the pipes.

Poor Installation

When having the boiler installed, it is important to use competed Gas Safe satisfied technicians and engineers. This will ensure the boiler is properly installed and the best standards. Our engineers can assist you with any boiler installations or replacements.

If the boiler is not properly installed and particularly along the copper fittings, it might cause water drips. The best solution for this would be a re-installation. The water drips might only be the beginning of bigger problems.

See similar post: Boiler Keeps Cutting out When Central Heating is on

Identifying the cause of a leak or water drip on your boiler might not be easy. But, with our help, we can help to identify and fix the leak. If it is not repaired, the problem will not only worsen but can lead to the growth of fungus and mildew. These will destroy the foundation and structure of your home.

To prevent such damage, it is best to give us a call as soon as you notice any water dripping from your boiler. We will help you find the leak and repair it to make sure your boiler works properly again.

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