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Expert boiler services across West, Southwest, and Central London. At Keystone London, we work with all major boiler brands and stay up-to-date with the latest tech to deliver reliable, high-quality results.
We remember your service dates, so you don’t have to – think of us as your boiler’s personal assistant.
Our no fix, no fee policy gives you peace of mind—ensuring you only pay for the best service.
Looking after your boiler and central heating is what we do best at Keystone London.
Whether your current boiler needs a little TLC or it’s time for a complete replacement to keep your home running smoothly...
Local, reliable plumbers serving London — here’s why customers trust us:
Fully Qualified & Gas Safe Registered
Our engineers are certified to safely service, repair, and maintain all types of boilers.
Customer-Focused from Start to Finish
Friendly, professional, and committed to hassle-free service that meets our high standards.
Experts in Fast, Reliable Solutions
We diagnose issues early, source the right parts quickly, and keep your hot water running smoothly.
From routine maintenance to urgent repairs, we make plumbing simple and stress-free.
We suggest annually to ensure the guarantee is kept up to date and to provide maximum efficiency and reliability.
A boiler service in London typically falls between £50.00 and £80.00, depending on the amount of boiler fuel needed, the type of boiler (oil, gas or electric and the manufacturer and model), and the position your boiler was installed.
For an accurate figure, reach out to our friendly team for a free quote.
Common signs include strange noises, leaks, low pressure, and uneven heating across the radiators.
Repair costs vary depending on the issue, a cheap repair would cost around £100.00 and a more in depth repair with replacement of a major part such as a fan, PCB or pump can be up to £450.00
A boiler service usually takes 40 minutes to an hour, depending on if the boiler has been regularly maintained—if not, it may take longer.
It's generally not recommended, as boilers are complex and potentially dangerous systems. It's best to leave repairs to qualified professionals. Problems such as electrocution, gas leaks and water leaks could occur should the boiler be repaired incorrectly.
Boiler repairs can be completed within 15 minutes, however more complicated fixes can take up to 3-4 hours.
Turn off the boiler and water supply, and contact a qualified engineer immediately to assess and repair the issue. We may suggest opening the taps and opening the drain valve if there is one outside, or using a hose pipe if there is one internally on a radiator.
Regular maintenance, such as annual servicing, can help prevent many common boiler issues. It is advised to bleed radiators when required and ensure you have repressured the boiler if you have a sealed system. You can check for a pressure gauge on the boiler.
Check for obvious issues like power supply and thermostat settings. Ensure the gas supply is turned on and check for low water pressure within the boiler if you have a sealed system. If you can't identify the problem, contact a professional for diagnosis and repair.
It depends on the extent of the damage and the age of the boiler. We usually suggest that a boiler 10 years or older that requires a repair of more than £300.00, is beyond economical repair.