London’s Most Common Boiler Problems (And How to Fix Them Before Winter Hits)

London’s Most Common Boiler Problems (And How to Fix Them Before Winter Hits)

The boiler plays a key role in any British home, yet many homeowners don’t think about it until something goes wrong — often during winter, when reliable heating and hot water matter most. Unfortunately, boiler issues tend to surface in the colder months, when repairs can be more costly and inconvenient. The good news? Many of these problems are easy to spot year-round. If you notice anything unusual, it’s best to call a London boiler company for repairs before winter arrives. Here are some of the most common boiler problems found in London homes — and what you can do about them:

Leaks Boiler leaks are often caused by a damaged internal component, such as a faulty pressure valve. In these cases, a Gas Safe registered engineer from a London boiler company can replace the part and restore proper function. If the leak is due to high pressure damaging the valve, a pressure check and adjustment may also be necessary. However, if the leak is coming from the tank or surrounding pipework, corrosion could be to blame. Repairs might not be enough in more severe cases, and a full boiler replacement could be the safer and more cost-effective solution.

Low boiler pressure If your boiler’s pressure gauge reads around or below 1 bar, it’s too low to run efficiently. This could be the result of a water leak or a worn-out pressure relief valve. Rather than trying to figure it out on your own, it’s best to contact a London boiler company. A qualified professional can quickly diagnose the issue and make sure everything’s working as it should.

Strange noises Is your boiler making a noise similar to a boiling kettle? That could indicate sludge build-up on the heat exchanger. Calling a Gas Safe registered heating engineer is the best way to deal with this problem. A professional will flush the system to remove that build-up and prevent further damage. No hot water or heating No heating and hot water are among the top reasons homeowners need boiler repair in London. A professional can check for thermostat or pressure problems and run tests to determine if a part needs replacing. Flashing lights These are often caused by faulty boiler circuitry and electrics. A Gas Safe registered heating engineer uses multimeters to find the issue and replace the damaged component. Is your boiler showing these symptoms? Don’t wait until the temperatures drop before you fix your boiler. Get in touch with WPJ Heating for boiler repair in London to address the problem as soon as possible. You can give them a call now at 020 7350 2511.