Finding water near your boiler can be concerning. While boiler leaks are a common occurrence within many households, it is not something you want to tolerate.
Even a minor leak can cause further problems that can lead to damage within your home and increased costs to repair it. In this guide, we will explain the risks, reasons, and repairs needed for a leaking boiler in the simplest way possible.
Understanding Water Leaks from Boilers
A boiler heats water, then circulates it around the home to provide heat and hot water. As time passes, certain parts of the boiler may become old and rusty.
You may see a leak as water puddling around the boiler, damp areas on the walls or rust on the pipes, or a sudden decrease in boiler pressure. While some leaks can be small, some can be serious, so it is important to act quickly. This will help prevent damage and keep your home warm and safe.
Common Reasons for Water Leaking from a Boiler
Your boiler may leak for a variety of reasons. Each reason has a different solution, and understanding the cause helps to address the issue most efficiently and effectively.
Corrosion and Rust
Since boilers are made of metal, they can develop rust over time. When corrosion happens, the metal thins, and eventually components will begin to leak. This happens often with older boiler systems.
Worn Seals and Gaskets
There are taps in the boiler that have seals and gaskets that are meant to keep water in. But these can end up wearing or cracking. If your boiler has leaks coming, the reason is likely worn seals.
High Boiler Pressure
If your boiler has a water leak, it could be because the pressure gauge is set above the recommended pressure.
Broken Pressure Relief Valve
The pressure relief valve is supposed to let water out if pressure gets too high. If this valve is stuck or broken, water can leak from it, even if the boiler is working correctly.
Frozen or Burst Pipes
In colder weather, pipes that are connected to the boiler can freeze and expand. This may cause cracks and water leaks. Homes without insulation can have a greater risk of leakage.
Build-up of Sludge and Debris
Over time sludge, rust, and other debris can build up and block water from flowing freely. This can lead to pressure problems and leaks.
Risk of Water Leaks from Your Boiler
Even the smallest leak is still dangerous. Water leaking from a boiler can cause a lot of problems.
Water Damage
The most obvious risk is the damage that can happen to your floors, walls, and furniture. If a leak is continuous, it can cause damp patches, mould growth, and structural issues.
Boiler Damage
Leaks can cause damage to important components of the boiler, which leads to more serious malfunctions or the total failure of the boiler. The repair costs can be very high for severely damaged components.
Increased Energy Bills
A boiler that is leaking can overwork itself in an effort to maintain heat. This makes the boiler lose efficiency, and your energy costs go up over time.
Electric Shock
Water that is leaking near the boiler’s electrical components can be very dangerous. Always avoid touching a wet boiler.
Health Risks
In some instances, the leak can affect the combustion process, which can lead to mould in the home. Thus, it puts you at risk of carbon monoxide poisoning.
Identifying a Leak in the Boiler Water System
If you have reason to believe that your boiler has a water leak, consider the following evidence:
puddles or damp areas
Inspect areas under and around the boiler
Rust or corrosion
Rusty surfaces of pipes or the boiler may indicate a slow leak
Failing Pressure
If the pressure gauge drops, it could indicate a leak in the water boiler system
Dripping Sounds
Listen closely for dripping or hissing
Stains or Damp Walls
Look for water stains on the walls or floors close to the boiler
What To Do if Your Boiler is Leaking Water
Make sure to take all necessary precautions so that there is little to no damage done to the area where the water is leaking from the boiler.
Step 1. Shut off the boiler
To stop any additional water damage and will eliminate any risks.
Step 2. Turn off the water supply
This must be done to stop further water from entering the boiler.
Step 3. Drain the system if necessary
It may help to stop the area from flooding.
Step 4. Call a professional
Boiler leaks are not easy to fix, and only a qualified engineer will be able to mend the problem safely.
How to Fix a Boiler Leaking Water
The solution will depend on the cause of the leak. Some common examples include the following:
Seal or Gasket Replacement
If there is a leak at a joint or connection point, it could be that a seal or a gasket needs to be replaced. Replacement is a quick job for a plumber or heating engineer.
Repair or Replacement of Corroded Parts
Corrosion could also affect things like pipes or heat exchangers or other components of the boiler. Repair means replacing any of the damaged components
Boiler Pressure Adjustment
Excessive pressure can cause leaks at joints or at the pressure relief valve. A trained engineer can safely adjust the pressure level to the recommended level.
Pressure Relief Valve Repair
If the valve is leaking, it may require repair or replacement.
Pipe Insulation
If leaks are caused by pipes freezing, insulating your pipes will stop the leaks from occurring again.
Boiler System Flush
Sludge and debris will cause a full system flush to improve water flow, reduce pressure, and avoid leaks in the future.
Call Touch of Heat to Get a Professional Service
An experienced heating engineer can determine the issue and repair it in a safe manner. For a quick and trustworthy service, reach out to Touch of Heat.
Final thoughts
Leaks can cause serious problems for your home and your boiler. So if you find them early, take action and get a professional to fix the issue.
The longer you wait, the more repairs will be needed. Boilers are not something you fix once and forget. They require regular maintenance.
Frequently Asked Questions
Why would water come out of the boiler?
Boilers can leak water due to high pressure from the system, worn-out seals and bolts, rust, loose joints, and faulty components.
Is leaking boiler water dangerous?
Yes. A leaking boiler can cause serious damage, as it can reduce heating efficiency and, in certain circumstances, cause an electrical or gas safety problem.
Can it leak due to high pressure in the boiler?
Yes. If the pressure is too high, a forced valve will open to release water from the system.
How much will it cost to repair a leaking boiler?
That is determined by the nature of the cause.
What can be done to prevent leaking boilers?
Leaks can be prevented by doing regular maintenance, checking the pressure is not too high, insulating the pipes during winter, and flushing the system out at least once a year.