Get a Combi Boiler Conversion From £2900

Get a Combi Boiler Conversion with Master Gas London. Bid farewell to outdated gravity tank systems and welcome efficient, cost-effective heating & hot water. Unlock the advantages of a combi boiler and revolutionize your heating today!

combi boiler conversion from £2900

Combi Boiler Conversion Offers

combi boiler conversion from £2900

Vaillant Conversion
From £3400

Vaillant combi boiler conversion, starting at just £3400. Experience efficient, and reliable heating today!

worcester bosch new boiler installation

Worcester Conversion
From £3400

Worcester Bosch Combi Boiler conversion from £3400. Experience all-in-one heating solutions today!

Baxi boiler installation

Baxi Conversion
From £3300

Baxi 800 combi boiler conversion from just £3300. Enjoy efficient, all-in-one heating for your home today!

Glow Worm boiler installation from £2015

Glow Worm Conversion
From £2900

Glow Worm combi boiler conversion from £2900. Discover efficient and reliable heating solutions today!

What's Included in a Combi Conversion?

vaillant ecotec plus combi boiler

A Rated Combi Boiler

Experience Instant Hot Water

combi boiler conversion pipework included

Convert all Pipework

combi boiler conversion cold water storage tank removal

Water Tank Removal

combi boiler conversion includes removal of the hot water cylinder

Remove Outdated Components

This includes the Hot Water Cylinder, all Pumps, and Valves

What Is a Combi Boiler Conversion?

A Combi Boiler Conversion is shifting from an outdated conventional system to an efficient solution. Revamp your setup, removing storage tanks and cylinders to optimise space and enhance efficiency. With a pressurised combi system, enjoy consistent mains pressure, eliminating the need for noisy pumps. Experience instant hot water without timers or delays, transforming your home with ease.

Why Choose Us?

fixed priced new boiler installation from £1900

Fixed Prices

Once your Price is Fixed, it remains Fixed.

finance available

Click Here for Finance

free no obligation site survey

Free Surveys

new boiler installation from £1900

Hassle-Free Installations

Our Combi Boiler Conversion Installations include everything you need


Free System Design

We will design the perfect Combi system for Free

gas safe boiler service engineers


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12 months warranty on all services

On Workmanship

new boiler warranty

Boiler Warranty

We take care of Boiler Warranty, Registration, and Building Regulations

How to Book a Combi Boiler Conversion Survey?

Master Gas London online booking form


Schedule a free no obligation site survey to assess your options

Engineers at Master Gas London


A Master Gas London surveyor will attend to carry out the survey

Central heating floor plan design


Our team will design and provide a fixed priced itemised quote

We Only Install High-Quality Brands

We work with trusted brands such as Worcester Bosch boilers, Vaillant boilers, Baxi boilers, and Glow Worm boilers. 

new boiler installation from £1900


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worcester bosch new boiler installation


Click Here to learn more.

Baxi boiler installation


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Glow Worm boiler installation from £2015

Glow Worm

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Is a Combi Boiler Conversion Right for My Home?

Converting to a combi boiler is an excellent option for many homeowners, offering benefits such as space-saving, energy efficiency, and instant hot water. However, it’s essential to consider factors like your existing heating system, hot water demand, and property layout to determine suitability.

What Factors Influence the Cost of Combi Boiler Conversions?

Several factors can affect the cost of a combi boiler conversion, including the size and type of boiler, complexity of installation, additional components required, and any existing system modifications needed.

Is a Heat Pump Suitable for My Property?

Air source heat pumps are suitable for most properties, but it’s essential to consider factors such as available outdoor space for the unit, insulation levels, and heating requirements. A professional assessment can determine suitability.

How Does the Combi Boiler Conversion Process Work?

The conversion process involves removing your existing boiler and hot water cylinder, installing the new combi boiler, and making any necessary modifications to your heating system. Our experienced engineers will ensure a smooth transition, with minimal disruption to your home.

Master gas london are your trusted partner in all things gas, heating and hot water

A Family Run Business Since 2015

What Our Customers Say...


A combi boiler conversion refers to the process of changing or upgrading your existing heating system to a different type or technology, such as switching from an old gravity tank system to a combi boiler system.

There are several reasons why you might consider a combi boiler conversion, including improving water pressure, energy efficiency, reducing carbon footprint, lowering operating costs, or complying with environmental regulations.

The duration of a combi boiler conversion can vary depending on the complexity of the project and the specific requirements. It can range from a few days to a week.

While some inconvenience may be expected during the installation process, professional technicians strive to minimize disruption to your daily routine. They work efficiently and take measures to ensure your comfort.

In most cases, a combi boiler conversion leads to improved energy efficiency, which can result in lower energy bills over time. Newer systems often utilise advanced technologies to optimise energy usage.

It’s essential to follow the manufacturer’s guidelines for maintenance and schedule regular servicing to keep your new heating system running efficiently. Professional maintenance helps maximise performance and prolong system lifespan.