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Professional Boiler Installation & Replacement in London

We provide boiler installation across London for homes and commercial properties. If your current boiler struggles with heating and hot water, breaks down frequently, or operates inefficiently, our Gas Safe registered engineers can install a new boiler as part of a heating system upgrade. Our service includes new boiler installation, boiler replacement, and central heating system work. This covers gas boiler upgrades, combi boiler installs, system boilers, and conventional boiler setups, selected based on heating needs, property size, and hot water demand.

Emergency Boiler & Heating Repairs Across London

If your heating system stops working unexpectedly, our Gas Safe registered engineers provide fast emergency repairs across London. We handle boiler breakdowns, heating faults, gas appliance issues, and loss of hot water, restoring safe and reliable heating as quickly as possible.

Our engineers are available 24/7 and aim to attend within one hour where possible. Each repair is carried out by qualified professionals who diagnose the problem quickly and complete reliable repairs to get your heating system working again. Whether it’s a boiler fault, heating system issue, or gas appliance problem, we provide responsive emergency support to keep your property warm and safe.

Call us on 020 7889 1111 or Book Now

Professional Boiler Installation Process by Gas Safe Engineers

Our Gas Safe registered engineers follow a structured boiler installation process to ensure safe, efficient, and reliable heating. From assessing your current heating system to installing and commissioning the new boiler, every step is completed to industry standards and manufacturer guidelines, helping ensure consistent heating and hot water performance.

1. Heating System Assessment & Boiler Selection

We assess your existing system, current boiler condition, hot water system, heating requirements, and property layout. This allows us to select the right boiler for your home, whether that is a system boiler, combi boiler, or conventional boiler with a hot water cylinder.

Our gas engineers install boilers safely and correctly. This includes pipework connections, gas supply checks, flue installation, and integration with the central heating system. All new boilers are fitted to operate efficiently and meet gas safety standards.

The boiler is tested for heating and hot water performance. We check pressure, temperature control, and efficient performance across the system. Settings are adjusted to support maximum efficiency.

We explain how to operate the new boiler, heating controls, and hot water settings. Warranty registration is completed to keep your boiler warranty valid.

Why Choose WEFIX for Boiler Installation in London?

Our boiler installation service is built around safety, reliability, and transparent communication. Every installation is carried out by qualified professionals and completed to strict industry standards to ensure safe and efficient heating for your property.

What We Fix

If it is heating-related, we can diagnose it quickly and recommend the most cost-effective fix.

No heating or hot water

Boiler not firing up

Low boiler pressure

Boiler leaks or dripping pipes

Strange boiler noises

Thermostat and control faults

Hot water temperature issues

Absolutely Fabulous message
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Absolutely Fabulous message
Can you guess who

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Emergencies – response within 1 hour, 24/7, at our standard rates during normal work hours

Emergencies are our priority, response within 1 hour, 24/7

Do not use a competitor claiming to operate 24 hrs (they do not work late evenings)

10% Discount on labour for Plimlico Plumber customers

Your choice.

Repairs / Installation

  • Boiler breakdown
  • Servicing
  • Radiators & Valves
  • Pumps & pipework
  • Gas Leaks
  • Hot water cylinders & tanks
  • Controls & thermostats
  • Landlord Gas Safety Cert
  • System Power flushing
  • Underfloor heating

Boiler Installation

Accredited installers:

Ideal

Ideal

Vaillant

Vaillant

Worcester Bosch

Worcester Bosch

Glow worm

Glow worm

Keston

Keston

Baxi Group

Baxi Group

Megaflo

Megaflo

Heatrae Sadia (Amptec)

Heatrae Sadia (Amptec)

Potterton

Potterton

Boiler Installation & Replacement FAQs in London

Below are some of the most common questions about boiler installation services in London.

How much does boiler installation cost in London?

We provide central heating services across London, including repairs, servicing, and central heating installations for residential and commercial properties.

Most boiler installations are completed within one day, although larger systems or installations that require pipework upgrades may take longer. Our engineers will assess your heating system and confirm the expected installation time before work begins.

The best boiler depends on factors such as property size, number of bathrooms, heating demand, and available space. Combi boilers are often suitable for smaller homes, while system boilers or conventional boilers may be better for properties with higher hot water demand.

Yes. In the UK, all gas boiler installations must be carried out by a Gas Safe registered engineer to ensure the work complies with gas safety regulations and manufacturer requirements.

A system boiler works with a hot water cylinder and suits properties with more than one bathroom that need a stable hot water supply.

Yes. We install boilers as part of complete central heating systems, including heating and hot water integration.

Boiler replacement is recommended when the existing boiler becomes unreliable, inefficient, or expensive to repair. Older boilers may also use more energy, which can increase heating costs compared to modern high-efficiency models.