Buy a Boiler Online with Installation Included

New Boiler Installations From £1800

Boilers fitted next day

Flexible Finance Options Available

New boiler installation starting at £1720

What Our Customers Say...

Miriam Burke
Miriam Burke
Ed has been looking after my central heating for a few years now. He is always polite, and helpful. He’s patient and goes above and beyond to problem solve and work out the best solution. Highly recommend!
Andrew Rogerson
Andrew Rogerson
Great service, chatted me through any fixes on the phone and fitted me an appointment in without any bother. Very helpful and friendly! Would highly recommend!
Sue Yamansef
Sue Yamansef
Ed and Tam provide a first class service. I have used them for a number of years for boiler servicing and they have never let me down . I recently had my boiler replaced and they worked round the clock to get this done in a day. Extremely honest, reliable and working in a tidy fashion, I would highly recommend Master Gas!! Thanks guys!
Ben Ross
Ben Ross
Highly recommend Master Gas for any boiler issues. They came and fitted a new boiler quickly and at a fair price & were a pleasure to have in the house.
Leo Adewebi
Leo Adewebi
Referred by a close friend to this amazing company called Master Gas London as l needed to replace a 15 years old boiler. I contacted them on WhatsApp and in a couple of days survey and detailed quote with recommendations given and installation arranged. Installation was fantastic with prompt time keeping and professionalism at every step.The engineer Tam and team were brilliant as they were able to solve problems encountered by using logical and analytical thinking as well as creativity and imagination. And best of all you won't get a better price and care they put into the installation to satisfy their customers. I highly recommend Master Gas London and please have a look at their website. Top class boiler installers and take it from this highly satisfied customer.
Tim Kay
Tim Kay
Excellent job! Decent price, professional install, done on time and everything was left tidy after explaining the new boiler controls clearly. With my boiler beyond repair I got a replacement quote, with explanations, within 30 minutes. The team booked me in for a Saturday and I was up and running again less than three days after that first phone call. Highly recommended. Genuinely, if you need a new boiler installed call Master Gas.
Harry Ioannou
Harry Ioannou
Great service, very comfortable using Master Gas. They installed a new vaillant boiler for my home. Everything was very clean, explained everything in detail and they were good value for money compared to most other companies.The lads left my house clean and tidy, would definitely recommend and use again with out a doubt.
Laura Homsy
Laura Homsy
Best plumber team I ever had the pleasure to meet. I can highly recommend Ed and Tam and will certainly use them again in the future.
Sarah Stamps
Sarah Stamps
Was employed by our builders Aspire Lofts and construction to connect a gas supply to a new hob, in a newly renovated kitchen. When testing the gas pressure the results highlighted a gas leak. Tamer gave us a number of solutions to which we decided to go ahead with finding the leak. The area where the leak was located was isolated and made safe. We found Tamer extremely knowledgeable and he couldn't do enough to help make our home safe. We will definitely be calling him back to run the new gas supply.
I had a valiant boiler fitted in my home by the boys, they were very reliable and super tidy with their work. Would definitely recommend and use again foe other work. Thanks again

Popular Services

New boiler installation from £1800

New Boiler Installation
From £1800

Book a new boiler installation from just £1800! Discover affordable heating solutions. Book your installation today!

Vaillant ecotec plus installation

Combi Conversion
From £2699

Upgrade to Combi Brilliance! Experience instant hot water and efficient heating from £2699

New boiler installation from £1800

Boiler Servicing
For Just £108

Affordable boiler servicing at just £108 - don't compromise on safety and efficiency. Schedule your Service Today!

Vaillant ecotec plus installation

Boiler Repair Visit
From £108

"Need a boiler repair? Starting at just £108 with "No Hourly charge". Get your heating back on track Hassle-Free!

Smart thermostat installations

Smart Thermostats
From £220

Buy a Smart Thermostat with installation starting at £220. Explore our selection today!

Unvented cylinder installations

Unvented Cylinders
From £1395

Buy an unvented cylinder with installation from £1395. Enjoy constant, high-pressure hot water throughout your home.

Polypipe underfloor heating installation

Underfloor Heating

Discover the ultimate in comfort with our underfloor heating installations, complete with a free site survey and design service.

Air source heat pump installations

Air Source Heat Pump

Discover the future of heating with our air source heat pump installations, complete with a free site survey and design service.

What's Included with a New Boiler Installation?

worcester bosch greenstar

New Boiler Installation Deals

We have a new boiler installation package for every budget. Find the perfect boiler for the perfect price.

New Boiler Installation vaillant ecotec plus

Vaillant Installation
From £2325

Get a New Vaillant Boiler Installation with 10 year Parts & Labour Warranty Included

Combi boiler guide, combi boiler installations from £1720

Worcester Installation
From £2215

Get a New Worcester Bosch Boiler Installation with up to 12 years Parts & Labour Warranty Included

Baxi boiler installers

Baxi 800 Installation
From £2210

Get a New Baxi 800 Boiler Installation with 10 year Parts & Labour Warranty Included

Glow worm boiler installer

GlowWorm Installation From £1800

Get a New Glow Worm Boiler Installation with up to 10 years Parts & Labour Warranty Included

Why Choose Us?

Fixed and Fair Pricing

Our fixed and fair pricing provides transparency and value to our clients. We offer detailed itemised quotes on all new boiler installations without any hidden costs or surprise charges. Our competitive rates ensure affordability without compromising on quality. Once your price is fixed it’s fixed.

Simple Booking System

Our online booking system allows you to easily book your new boiler installation or chosen service at any time, on any day, from anywhere. Our user friendly system makes scheduling any service we offer hassle-free.

Our Passion Is Your Satisfaction

At Master Gas London, our purpose is to provide an enjoyable, stress-free experience for every customer. Our team is committed to exceeding your expectations and leaving you with a smile. 

Award Winning After Care

We pride ourselves on our new boiler installation award-winning aftercare service. We are dedicated to ensuring that our clients are satisfied with our work, and our team is always on hand to provide support and advice even after works are completed.

Best Price Guarantee...

We will beat Boxt, Heatable, BoilerCentral, IHeat & the rest on price. All our new boiler installation packages have a limescale reducer and a MagnaCleanse flush included. Our competitors will charge up to £65 for the scale reducer and up to £300 for the MagnaCleanse flush.

Best price's for gas, heating, hotwater and smart thermostat installations

Master Gas London Guarantee

At Master Gas London, we take pride in our work and are dedicated to giving our clients the finest support we can. We provide a 12 month workmanship guarantee for all new installations, services, and parts. 

Master Gas London 12 month workmanship guarantee

Who are Our Engineers?

At Master Gas London, we only employ Gas Safe and G3 qualified engineers to carry out all new boiler installations. Every engineer is highly experienced with a minimum of 5 years experience. All engineers have undergone thorough vetting to ensure that we only provide the best gas services in the UK.

Master Gas London home page with image of an engineer with vans

Master Gas London Blog

Which Vaillant Boiler

September 17, 2023
Read More

A Family Run Business Since 2015


Master Gas London is your trusted partner for all your heating and energy needs. We specialize in high-quality boiler installations, central heating systems, unvented cylinders, gas services, air source heat pumps, and smart thermostat solutions. Our team is committed to hassle-free and cost-effective services, ensuring you receive top-quality work at competitive prices.

All workmanship is covered by a Master Gas London 12 month guarantee. The guarantee is on all services we offer. A new boiler installation will come with it’s parts & labour warranty & the Master Gas London 12 month workmanship warranty. If there is any problem with our work, we will send one of our in house engineers to rectify the issue.

At Master Gas London we DO NOT use subcontractors. We have our own in house engineers with our own vehicles. All our competitors are trying to reduce costs by subcontracting all works to any engineer with his own van. Quality work is what the founders of Master Gas London have built the company on. Subcontracting is not the way if you’re looking for quality work.

A like for like installation will take one day to complete. A conversion from a gravity system to a combi will take two days.

That’s the beauty of our free online quote tool, input your property details & “hey presto” you will get a list of quotes with boilers sized accurately for your property & a fixed price.

Master Gas London works with a range of boiler brands Worcester Bosch, Vaillant, Baxi, and Glow Worm. These brands are known for their high-quality and are reliable boilers.

We offer financing up to 10 years for all installations. Complete the application & you will receive an answer within 24 hours.

Master Gas London accepts a variety of payment methods. These means of payment include debit card, credit card, and bank transfer. Customers can use these options to select the best payment method for them and conveniently pay for boiler installation, repair, or maintenance services.

All boiler installations come with a boiler & flue kit, magnetic system filter, limescale reducer which others will charge an extra £65 for, a wireless or smart thermostat, materials required & a magnacleanse flush which our competitors will charge up to £300 for. Most companies only offer a chemical flush, which is useless as a chemical flush needs to done over a duration of a week not a day.  

If it’s a boiler installed by Master Gas London & is still under the 12 month or manufacturer warranty, then call us. We will take it from there. If it’s a boiler we haven’t installed then you can book a Master Gas London boiler repair visit which is NOT charged by the hour.

A boiler should be serviced annually. This will keep the boiler running efficiently & also make sure it’s safe. To maintain the manfacturer warranty you will need proof of a yearly service.

Master Gas London serves a wide range of areas in and around London. These areas include London, Essex and Hertfordshire. So whether you’re in need of a new boiler installation, repair, or maintenance service, Master Gas London can provide expert assistance to customers across these regions.