Provides heating and hot water directly without requiring a separate hot water cylinder.
Often suitable for: flats, apartments and smaller homes with moderate hot water demand.
Works with a separate hot water cylinder, allowing stored hot water to be supplied to multiple outlets when required.
Often suitable for: larger homes, properties with multiple bathrooms, and households with higher simultaneous hot-water demand.
Works with a cylinder and traditional heating-system configuration.
Often suitable for: properties already using conventional systems or with specific heating requirements.
Wondering what happens when you book a boiler installation in London? We guide you from choosing the right boiler through to safe installation, testing and handover.
We assess your existing heating system, property size, hot water demand and, where relevant, water pressure and gas supply. This helps us recommend a suitable boiler type and output.
You'll receive a quotation covering the proposed boiler, installation work and any necessary changes to pipework, controls or the existing system.
Our Gas Safe registered engineers install your new boiler, including the required connections, flue, condensate arrangements and heating controls. The old boiler is removed where required.
We test and commission the installation, explain how to use your boiler and controls, and provide guidance on maintenance and annual servicing.
Many straightforward boiler replacements take around one day. Relocations, system conversions and more complex installations may take longer.
The cost of a new boiler installation depends on more than the boiler itself.
Your property's heating requirements, existing system and the complexity of the installation all influence the final quotation.
A like-for-like boiler replacement is generally less involved than relocating a boiler or converting to a different heating system. We assess the work required before providing a clear, tailored quote.
Request an Installation QuoteFour key factors we consider when preparing your quotation.
Combi, system and conventional boilers have different installation requirements.
Moving a boiler or changing system type may require additional pipework, flue or condensate arrangements.
The manufacturer, selected model and output needed for your property affect the overall cost.
Heating controls, pipework modifications and any necessary system upgrades are included in the assessment.
Keystone London installs and replaces boilers across West, South West and Central London. Explore our local services to find boiler installation support in your neighbourhood.
The cost of a new boiler installation depends on the type and model of boiler, your property's heating and hot water requirements, and the amount of installation work involved.
A straightforward boiler replacement will usually involve less work than relocating a boiler, converting from a conventional system to a combi boiler, or making significant changes to existing pipework.
Keystone London assesses your requirements before providing a clear quotation, so you know what is included before installation begins.
A straightforward boiler replacement can often be completed within a day, while more complex installations may take longer.
Changing the boiler type, moving it to a new location, altering pipework or upgrading other parts of the heating system can increase the installation time. We'll explain the expected timescale before work begins.
The correct boiler size depends on more than the number of bedrooms in your property. Your home's heat demand, number of radiators, bathrooms, hot water requirements and existing heating system all need to be considered.
Our engineers assess these factors before recommending an appropriate boiler output for your property.
In many properties, yes. However, relocating a boiler can require changes to gas pipework, heating pipes, condensate drainage and the flue arrangement.
The proposed location also needs to meet relevant installation and safety requirements. We can assess suitable locations during your survey and explain any additional work involved.
Not necessarily. If your existing radiators are in good condition, appropriately sized and working effectively, they may not need replacing.
However, poorly performing, damaged or unsuitable radiators may be worth upgrading as part of a wider heating-system improvement. We'll assess the existing system and advise if any changes are recommended.
The condition of the existing heating system needs to be considered when installing a new boiler. Sludge and debris within the system can affect circulation and the performance of new components.
The appropriate cleaning or flushing method depends on the condition of the system. We'll advise what is required as part of the installation.
Keystone London works with leading boiler manufacturers commonly installed in UK homes, including brands such as Worcester Bosch, Vaillant, Ideal, Baxi and Viessmann.
Rather than recommending the same boiler for every property, we consider your heating requirements, hot water demand, available space, budget and preferred features.
New boilers generally come with a manufacturer's warranty, although the length and conditions vary between manufacturers and models.
Correct installation, registration and ongoing servicing may be required to maintain warranty cover. We'll explain the relevant requirements for the boiler you choose.
