Boiler Installation London

Guaranteed heating and gas engineers for 24/7 central heating and gas repairs in London. Our local Gas Safe heating engineers are one call away from delivering urgent heating and gas services in London.

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Boiler engineer London


1. Choose a Gas Service

Select the gas and heating service you need.


2. Choose a Date & Time

Confirm online or request a call back to arrange your booking.


3. Book your Heating Engineer

Sit back, stay warm. We’ll be with you in no time.

Boiler Installation London

What makes our service amazing.

Gas Safe Registered

Gas Safe Registered, safe contractor approved and experienced engineers

12 Month Guarantee

12 month Fixcrowd gas service guarantee

10 Year Baxi Guarantee

Up to 10 years of cover for Baxi boilers installed by Fixcrowd

12 Year Worcester Guarantee

Up to 12 year guarantee for Worcester Bosch boilers installed by Fixcrowd

10 Year Vaillant Guarantee

Up to 10 years of cover for Vaillant boilers installed by Fixcrowd

Fixed Price

Fixed pricing structure guaranteed for heating and gas quotes

Local, trusted and experienced.

See what our customers say about us.

Abby Keningale
A fantastic company that go above and beyond for their customers. They are responsive to queries, deliver excellent standards of work for reasonable prices, and always take the time to answer any queries. Would highly recommend!!
Agata Ryszewska
Excellent work. Thank you 👍
Samanta Lehto
Excelent customer service and efficient work. Areef managed to get a plumber to visit my residence in about 30 minutes for an emergency work, and kept me updated all the way through in regard to the service being done. The plumber attending my address was also very friendly and professional. I would highly recommend Fixcrowd services.
Jennifer Sampson
Barry from Fixcrowd did a great job to repair the leaking radiator and doorbell. He was so helpful and efficient. He also fixed a light switch that he noticed was broken. The team at Fixcrowd are professional and reliable.
Hassan Ahed
The team at Fixcrowd have exceeded my expectations! The team is punctual, professional and super efficient. Could not recommend them enough. A fine example of delivering a hassle free service without emptying your pockets.
C4H4AsH Mac
Jeffrey was awesome, answered my query efficiently and sorted a call back. Thanks put my mind at rest and was brilliant !
Zain Umer
Needed some urgent repair work to boiler. Fast, easy to arrange and decent price. Staff very professional is job. Would recommend and use again
Kinan K
Fix crowd are very professional, extremely helpful and handle all our properties with care which makes the experience of working with them very rewarding! I would not hesitate to recommend them to anyone looking to have a service with very high standard!
Katey Tetteh
The service was great and Harvey was extremely helpful in guiding me through the letting process. He was always very timely with his responses too.
Charles Weld

London Gas Engineer

Radiator replacement
Boiler replacement
Radiator Installation
Radiator flushing
Fixing cold radiators
General heating issues
Fixing leaky Pipes
Underfloor heating repair

Boiler Installation London

There are four major types of boilers:

  1. Combination boiler:
    Combination or combi boilers are usually compact with 4-5 copper pipes connected at the bottom. It is not attached to any external pump or large hot water cylinder.
  2. System boiler:
    You can identify a system boiler by checking underneath. It usually comprises three copper pipes rather than the 5 in a combi. Besides, some also come with a hot water cylinder. You can see a pressure gauge at the front of the casing.
  3. Heat-only boiler: 
    Also known as a regular boiler, it has three copper pipes. Two at the top and one at the bottom. This is usually with a hot water cylinder, a cold water storage tank, and an external pump.
  4. Back boiler:
    Using old back boilers is not allowed in the UK unless you update them. Back boilers are often installed at the back of a gas fire.


All the above boilers (excluding back boilers) are available in condensing and non-condensing variants.

Generally, all boilers installed in England are now condensing given their high efficiency and cost-friendliness.

Boilers hold extreme pressure, flammable gas and high temperature, making them unsafe for DIY diagnosis. We don’t recommend you attempt to do any work on your boiler. You can only legally service a boiler on your own if you’re trained, competent, and accredited by Gas Safe.  If your gas boiler breaks down, make sure you reach out to a Gas Safe and accredited engineer.

Some work like re-pressurizing, resetting, bleeding air out from radiators, or changing thermostat batteries can be done by you. We would always recommend you call a professional plumbing and heating engineer instead of risking your safety. Most jobs need specialist tools, like a power flushing machine, radiator valves, or a thermal camera to view cold spots.

Call Fixcrowd to book a nearby boiler repair in London. You’ll need to arrange a gas-safe registered engineer when:

  • There is no heat at all
  • There is water leakage
  • Strange noises are coming from your boiler
  • The pilot light is off
  • The water pressure drops below the standard level
  • Radiators are not heating properly
  • There is sludge in the system
  • You can’t use your underfloor heating system


All gas appliances, including boilers, must be inspected at least once a year. You can flush a central heating system using two methods; power flush or clean each radiator individually.

A power flush is the fastest way to remove sludge and offer the best results.

Radiator cleaning is a time-consuming process. You’ll need to turn off the heating system, to avoid leaks or injury.

The costs of a radiator power flush can vary depending on the number of radiators, and the complexity of the model. Call the Fixcrowd team If you want to know how much a power flush or gas certificate will cost.

Gas Safety Certificate checks vary between £50 to £160 depending on the number of appliances you’re using. The engineer has to check your boiler for repair or replacement. The additional boiler servicing cost may add up to your main cost.

Get in touch with our team for the cost of the gas safety certificate today.

Boiler installations can be complex and depend on a few factors. Swapping a like-for-like combination boiler with another combi unit takes a Fixcrowd gas service engineer a few hours.

Installing a new boiler from scratch can take a day on average or two in some cases.

Fixcrowd can help you book same-day boiler repairs in London, including underfloor heating service, installation, and maintenance for residential, commercial and investment properties.


Landlords must provide gas safety certificates to their tenants every 12 months. You can book an urgent annual gas safety check today. Call us or book online for availability.

Note:  Homeowners don’t have to renew their gas certificates annually unless they offer lodging services. However, we recommend you get your gas safety checks annually for personal and environmental safety. You can contact your local authorities for any compliance questions.

You also need a boiler installation certificate which ensures your boiler is clean and working.

If your heating system is working fine, you will only need a power flush every 5 to 6 years. This prevents damage to metallic components and flushes out sludge buildup and blockages.

Fixcrowd engineers are just a call away. Our on-call emergency plumbing services cover residential, commercial, and investment properties. Our services cover installing and fixing bathrooms, sinks, dishwashers, showers, gutter repairs, burst pipes, radiator installation, and more.

With fixcrowd, you can find a skilled professional to install your boiler in no time! 

fixcrowd is a leading provider of boiler installation services throughout London. We have a team of fully-certified, experienced technicians who specialize in boiler installations. Our technicians understand all types of boilers, so you can be sure that your boiler installation will be done right.  

Whether you’re looking to install a new boiler or upgrade your existing one, our experienced technicians can help. With fixcrowd, you’ll get reliable boiler installation services that meet the highest safety standards. We’ll make sure that your boiler is installed correctly so you can have peace of mind that your system is running at peak efficiency. 

When you choose fixcrowd for boiler installation in London, we’ll first assess the area to determine what type of boiler is best suited to your needs. We take into account the climate, your home’s layout, and other requirements to help you find the right boiler.  

Once the right boiler is selected, our experienced technicians will begin the installation. We use only the highest-quality products and the most reliable installation techniques to ensure your boiler is installed properly. Plus, our technicians are available to answer any questions you may have throughout the process.  

With fixcrowd, you can be sure that your boiler installation in London is done right every time. We offer competitive prices and a 100% satisfaction guarantee, so you know you’re getting the best service possible. Trust our skilled professionals to get your boiler installed quickly and safely.  

Don’t hesitate to call fixcrowd for boiler installation in London. Our experienced technicians will make sure your boiler is installed properly, so you can have peace of mind. Contact us today to get started with your boiler installation! 

At fixcrowd, we understand that a properly functioning boiler is essential to keeping your home or business warm and comfortable during the colder months. That’s why we offer comprehensive boiler installation services throughout London. Our experienced technicians are well-versed in all aspects of boiler installation and will ensure that your system is installed with the utmost care and attention to detail. 

We know that selecting the right boiler for your property can be a daunting task, but with fixcrowd, you can rest assured that we’ll help you choose the best one for your needs. Our technicians will take into account various factors such as your property size, hot water demands, and energy efficiency requirements to determine the most suitable boiler for you. 

Once we’ve determined the right boiler for you, our expert technicians will proceed with the installation. We use only the highest-quality materials and state-of-the-art installation techniques to ensure that your boiler is installed safely, efficiently, and in compliance with all relevant regulations. 

Our technicians will work with you to ensure that your boiler installation is completed as quickly and efficiently as possible, without sacrificing quality. We’ll keep you informed every step of the way, and our team is always available to answer any questions you may have. 

At fixcrowd, we understand that boiler installation can be a significant investment. That’s why we offer competitive pricing and financing options to make our services more accessible to all our customers. We stand behind our work and offer a 100% satisfaction guarantee, so you can have peace of mind knowing that your boiler installation is in good hands. 

Whether you need a new boiler installed or your current one upgraded, we’re here to help. With our extensive experience and expertise, we’re confident that we can provide you with the highest quality boiler installation services in London. So why wait? Contact fixcrowd today to schedule your boiler installation! 

At fixcrowd, we understand that your boiler is an important investment for your home. That’s why we’re committed to providing top-quality boiler installation services in London. Our technicians have years of experience in the industry and have installed countless boilers across the city.

When it comes to boiler installation, it’s important to choose a company you can trust. At fixcrowd, we take pride in our work and our reputation for excellence. We understand that every home is different, and we’ll work with you to find the right boiler for your specific needs. 

Our team of experts is equipped with the knowledge and tools to handle any type of boiler installation project. Whether you need a new boiler installed in a newly constructed home or an older boiler replaced in an existing home, we have the experience and expertise to get the job done right. 

We use only the highest-quality products and materials for every boiler installation project, ensuring that your system will last for years to come. Our technicians are trained to install boilers with precision and care, minimizing any potential damage to your home. 

When you choose fixcrowd for your boiler installation needs, you can rest assured that your home is in good hands. We pride ourselves on delivering exceptional service to each and every one of our clients, and we’re committed to making sure you’re completely satisfied with our work. 

In addition to our installation services, we also offer maintenance and repair services for boilers. We recommend that you schedule regular maintenance for your boiler to keep it running at peak efficiency and prevent any potential issues. 

Contact fixcrowd today to learn more about our boiler installation services in London. Our team of experts is standing by to answer any questions you may have and provide you with a quote for your project. 

At fixcrowd, we offer a diverse range of services in London. These services include Heating & Gas, Plumbing & Drainage, Electrical, Painting & Decorating, Bathroom Fitting, Kitchen Fitting, Landscape Gardening, and Handyman. 

Getting a boiler installation in London from professional engineers is crucial for ensuring the safety, efficiency, and longevity of your boiler system. There are several reasons why choosing a professional engineer for your boiler installation in London is essential: 

  1. Expertise and experience: Professional engineers have the necessary training, qualifications, and experience to ensure that your boiler installation is carried out correctly and adheres to industry standards.
  2. Safety: Incorrect boiler installation can pose serious risks, such as gas leaks or carbon monoxide poisoning. Professional engineers have the knowledge and skills to ensure that your boiler installation in London is carried out safely.
  3. Compliance with local regulations: London has specific regulations and requirements for boiler installations. Professional engineers are familiar with these regulations and can ensure that your installation complies with them.
  4. Optimized performance: A professional engineer will help you choose the right boiler for your needs and ensure that it is installed correctly, resulting in optimal performance and energy efficiency.


A Boiler Installation Engineer is a qualified professional who specializes in installing boiler systems. Their primary responsibilities include: 

  1. Assessing your needs: The engineer will evaluate your home’s heating and hot water requirements, helping you choose the most suitable boiler for your needs.
  2. Preparing the site: The engineer will prepare the installation site, ensuring that it meets the necessary requirements for the boiler, such as sufficient space, ventilation, and gas supply.
  3. Installing the boiler: The Boiler Installation Engineer will install the boiler according to the manufacturer’s specifications and industry standards, ensuring that all connections are secure and correctly positioned.
  4. Testing the boiler: After the installation, the engineer will test the boiler to ensure it is functioning correctly and efficiently. They will check for any leaks or potential issues and make any necessary adjustments.
  5. Providing guidance: The engineer will explain how to use and maintain your new boiler, answering any questions you may have about its operation.


Choosing a professional engineer for your boiler installation in London is essential for ensuring the safety, efficiency, and compliance of your new heating system. A Boiler Installation Engineer will guide you through the entire process, from selecting the right boiler to providing expert advice on its operation and maintenance. 

No, it is not recommended for individuals without proper training and certification to install a boiler themselves in the UK. Boiler installation requires expertise and knowledge of local regulations. It is best to hire a qualified and Gas Safe registered engineer to ensure safe and compliant installation.

The type and size of boiler required for a 4-bed house depend on various factors, including the number of bathrooms, water demand, and heating requirements. Generally, a system or regular boiler with a capacity of 25-30 kW should be sufficient. However, it is recommended to consult a heating professional who can assess your specific needs and recommend the appropriate boiler for your 4-bed house.

The size of the boiler required for a 2000 sq ft house depends on various factors, including the insulation of the property, the number of radiators, hot water demand, and climate conditions. As a rough guideline, a mid-sized house with good insulation would typically require a boiler with an output of around 25-30 kW. However, it is always recommended to consult a heating professional who can perform a detailed assessment and recommend the appropriate boiler size for your specific needs.

Determining the right boiler size involves considering factors such as the size of your home, insulation, and heating needs. A professional installer can perform a heat load calculation to recommend the appropriate boiler size for optimal efficiency and comfort.

If you need a boiler installation, we've got you covered. Our expert team is readily available to answer any questions you may have and to provide solutions for boiler installation in London.

Heating engineer Near Me

Our mission is to provide the best heating services in the city of London. Fixcrowd Gas Safe Engineers can reach any postcode within the M25.