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Boiler installation in London

Looking for a new or replacement boiler in London? Keystone London provides professional boiler installation across West, South West and Central London, with expert advice to help you choose the right boiler for your property, heating requirements and hot water demand.

A Boiler Designed Around Your Home

Choosing a new boiler isn't simply about replacing one appliance with another. The boiler needs to suit your property's heating demand, hot water requirements, existing system and available water flow.

Keystone London plans boiler installations around the property rather than recommending the same solution for every home.

Right Boiler Size

Matched to your home's heating and hot water requirements.
  • Property & heat demand
  • Hot water requirements
  • Correct boiler output

Existing System

We assess what’s already in place before planning your new installation.
  • Water flow & pressure
  • Gas supply & pipework
  • Existing heating system

Installation & Controls

Every detail is considered for reliable performance and easy everyday use.
  • Best boiler location
  • Smart heating controls
  • Safe commissioning & testing

Choosing the Right Type of Boiler

Combi Boiler

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.

System Boiler

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.

Regular / Conventional Boiler

Works with a cylinder and traditional heating-system configuration.

Often suitable for: properties already using conventional systems or with specific heating requirements.

Not sure which you need?

We'll assess your existing system and recommend the most appropriate option.
NEW BOILER INSTALLATION

What’s Included in a Boiler Installation?

Keystone London engineer carrying out a boiler service

A new boiler installation involves more than fitting the appliance itself. The work required depends on your existing heating system and the type of installation, but we make sure the necessary installation, testing and handover are considered as part of the job.

A typical boiler installation may include:

  • Removal of the existing boiler where required
  • Installation of the new boiler
  • Necessary pipework connections and alterations
  • Flue and condensate arrangements
  • Installation or connection of heating controls
  • System preparation where required
  • Testing and commissioning
  • Explanation of your new boiler and controls

The exact work varies between properties. Boiler relocation, system conversion or additional heating-system work will be discussed during the assessment and included in the quotation where required.

Keystone London plumbing and heating engineer at a service van
BOILER INSTALLATION

How We Tailor Your Boiler Installation

More Than Simply Replacing Your Boiler

A boiler performs as part of a complete heating and hot water system. Before recommending a replacement, we consider how the boiler will work with the property and existing installation.

Water Flow

We check incoming mains water flow and pressure where relevant to determine what the system can realistically deliver.

Heating Demand

Your property's size and heating requirements help determine appropriate boiler output.

Existing Pipework

Gas supply, heating pipework and the existing system configuration are assessed before installation.

Boiler Location

We consider accessibility, flue requirements and practical positioning.

Heating Controls

We'll discuss suitable thermostats and controls to give you better management of your heating.

System Condition

The existing heating system is considered so that the new boiler isn't installed onto underlying problems without appropriate advice.
TRUSTED LOCALLY

HOW MUCH DOES A NEW BOILER COST?

Boiler Installation Costs in London

The cost of installing a new boiler depends on the boiler, property and amount of installation work required.

Boiler Type

Combi, system and conventional boiler installations can involve different equipment and work.

Installation Type

A straightforward replacement is generally different from relocating a boiler or converting the heating system.

Boiler Specification

Manufacturer, output and model affect the overall cost.

Installation Type

A straightforward replacement is generally different from relocating a boiler or converting the heating system.

Installation Type

A straightforward replacement is generally different from relocating a boiler or converting the heating system.

Want an Accurate Price for Your Home?

We'll assess your requirements and provide a clear quotation before installation begins.
BOILER REPLACEMENT

New & Replacement Boiler Installation

Many boiler installations involve replacing an existing appliance rather than installing an entirely new heating system.

Keystone London provides replacement boiler installation across London, from straightforward upgrades in the existing position to relocations and changes to the property's heating and hot water arrangement.

Like-for-Like Replacement

Replacing an existing boiler with a suitable modern alternative while retaining the general system configuration.

Boiler Relocation

Moving a boiler may require changes to pipework, the flue, condensate drainage and other parts of the installation.

System Conversion

Changing boiler type or modifying the existing heating and hot water system where appropriate.

Heating System Upgrade

A new boiler can be planned alongside suitable controls and other required heating-system improvements.

When Should You Consider Replacing Your Boiler?

An older boiler doesn't always need replacing, but there are situations where a new boiler may be worth considering. Reliability, repair costs, performance and changes to your property can all influence the decision.

1

Frequent Breakdowns

Repeated faults and repair visits may be a sign that your existing boiler is becoming less reliable.

2

Increasing Repair Costs

If significant repairs are becoming more frequent, it may be worth comparing the cost of repair with replacement.

3

Heating & Hot Water Problems

Poor heating performance or unreliable hot water may indicate that your current boiler or system needs further assessment.

4

Changes to Your Property

Extensions, additional bathrooms or changes in hot water demand may mean your existing boiler is no longer the right fit.
NEW BOILER BENEFITS

Benefits of Installing a New Boiler

If your existing boiler is unreliable or no longer suitable for your property, replacing it can provide an opportunity to improve the performance and control of your heating system.

Improved Efficiency

A modern boiler may operate more efficiently than an older or poorly performing appliance.

Better Heating Control

Modern thermostats and compatible heating controls can provide more convenient control over your heating.

Improved Reliability

Replacing an ageing boiler can reduce reliance on repeated repairs caused by an increasingly unreliable appliance.

Better Suited to Your Home

A correctly specified replacement can be selected around your current heating and hot water requirements.

Boiler Brands We Install

Keystone London installs boilers from leading manufacturers, helping you choose a model based on your property's requirements, budget and preferred features.
Worcester Bosch logo
Ideal Heating logo
Vaillant logo
Baxi logo
Glow-worm boiler logo
Viessmann Climate Solutions logo
Why Choose Keystone

Why London Homeowners Choose Keystone for Boiler Installation

Professional boiler installations tailored to London homes, with clear advice from survey through to commissioning and aftercare.
15+
Years Experience
1,000+
Jobs Completed
5.0
Google Rating
West, SW & Central
Coverage

Gas Safe Registered Engineers

Professional boiler installation completed safely and in accordance with current requirements.
  • Gas Safe registered
  • Experienced installers
  • Major boiler brands

Designed Around Your Home

We assess the property before recommending the boiler and installation approach.
  • Correct boiler sizing
  • System assessment
  • Practical advice

Support After Installation

We're still here after your new boiler has been installed.
  • Annual servicing
  • Boiler repairs
  • Ongoing support
Gas Safe Registered · Fully Insured · Quality Workmanship
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Take a look at our gallery of our Boiler Installation work

Areas We Cover

We provide fast, reliable plumbing and heating services across South West and Central London, covering both residential and commercial properties.

Local engineers based across SW & Central London
EMERGENCY SUPPORT ACROSS LONDON

Emergency Plumbing & Heating Services

From burst pipes and boiler breakdowns to gas faults and loss of heating or hot water, our engineers provide urgent support across West, South West and Central London.

Emergency Plumbing

Urgent repairs for burst pipes, leaks and blocked toilets.
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Air Conditioning Repair

Fast repairs for faulty air conditioning systems and breakdowns.
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Emergency Boiler Repair

Fast repairs for boiler breakdowns and heating system faults.
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Emergency Gas Engineer

Gas Safe engineers for urgent gas and heating emergencies.
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Heating Repair

Fast heating repairs for breakdowns, faults and cold radiators.
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Water Leak Repair

Rapid repairs for burst pipes, flooding and water damage.
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Burst Pipe Repair

Rapid repairs for burst pipes, flooding and water damage.
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No Hot Water

Restore hot water after boiler and heating system faults.
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Overflowing Toilet

Fast repairs for blocked, overflowing and faulty toilets.
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Plumbing & Heating

Complete emergency plumbing and heating support for your property.
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How it works with us

homeowner calling about renovations project

Contact us and share your underfloor heating plans to get started.

engineers design

We’ll design and specify your new underfloor heating system to perfectly suit your home.

Underfloor Heating

We’ll supply and install your new underfloor heating system, handling all necessary registration and paperwork for you.

Frequently asked questions

If you're considering a new boiler installation, we've answered some of the most common questions our London customers ask below.

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.

The best boiler type depends on your property and how you use heating and hot water.

A combi boiler can be a practical option for properties with suitable water flow and moderate hot water demand. System boilers work with a hot water cylinder and can suit homes requiring stored hot water, while conventional boilers may be appropriate for certain existing heating-system configurations.

We'll assess your current system and explain which options are suitable.

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.

A boiler should generally be serviced once every 12 months. Regular servicing helps check that the appliance is operating safely and correctly, can identify developing problems and may be required under the manufacturer's warranty conditions.

Keystone London also offers annual boiler servicing and service reminders to help keep maintenance on schedule.

 

Yes. Keystone London provides boiler installation across West, South West and Central London, including areas such as Chelsea, Fulham, Kensington, Knightsbridge, Pimlico, Hammersmith, Chiswick, Ealing, Putney, Wandsworth and surrounding areas.

Replacement isn't always necessary when a boiler develops a fault. A repair may make more sense if the boiler is otherwise reliable and the problem can be resolved economically.

A new boiler may become worth considering when the existing appliance is ageing, experiencing repeated breakdowns, becoming expensive to repair or no longer meeting your property's heating and hot water requirements.

What our customers say

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KEYSTONE LONDON

First Floor, 289 Brompton Road

Knightsbridge

London SW3 2DY
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