New Boiler Installation London – Expert Gas, Electric & Commercial Boiler Services
Whether your old boiler has finally given up, your energy bills are climbing higher each month, or you are building a new property and need a full heating system from scratch — choosing the right boiler and the right installer makes all the difference. At SMD Energy, we specialise in new boiler installation London for homes and businesses across all London boroughs, with Gas Safe certified engineers, next-day availability, and warranties of up to 15 years.
This guide covers every type of boiler we install, the benefits, our process, and why thousands of London homeowners and businesses trust SMD Energy with their heating.
Types of Boiler Installation We Offer in London
London properties come in all shapes and sizes — a Victorian terrace in Islington has very different heating needs from a modern flat in Canary Wharf or a large commercial premises in the City. That is why SMD Energy offers the full range of boiler types to match every property and budget.
Combi Boiler Installation London
The most popular choice for London homes, combi boiler installation London combines a central heating boiler and a high-efficiency water heater in one compact unit. There is no need for a separate hot water cylinder or cold water tank — making a combi boiler London installation ideal for flats, terraced houses, and smaller properties where space is at a premium.
Benefits of a combi boiler include instant hot water on demand, lower running costs, and a smaller footprint. Modern combi boilers are also compatible with smart thermostats and heating controls, giving you full control over your energy usage.
Gas Boiler Installation in London
Natural gas remains the most cost-effective heating fuel for the majority of London homes and commercial premises. Our engineers carry out gas boiler installation in London to the highest standards, fully compliant with Gas Safe regulations. Whether you are replacing an old system boiler or upgrading from a back boiler, we will size and fit the right gas boiler for your property's heating demand.
All gas work is completed by our Gas Safe registered engineers (registration #624338) — a legal requirement for any gas installation in the UK.
Electric Boiler Installation London
For properties without a gas connection — including many purpose-built flats and off-grid London homes — electric boiler installation London is an excellent solution. Electric boilers are quiet, compact, 100% efficient at point of use, and produce zero direct emissions. They are increasingly popular as part of eco-friendly home upgrades, particularly when paired with solar panels.
SMD Energy installs a range of modern electric boilers suited to both domestic and light commercial properties across London.
Commercial Boiler Installation London
Businesses have different demands from residential properties — higher output, reliability during peak usage, and compliance with commercial safety regulations. Our commercial boiler installation London service covers offices, restaurants, hotels, housing associations, schools, and larger multi-occupancy buildings.
We supply and install high-capacity commercial boiler London systems designed for continuous operation, energy efficiency, and long-term cost reduction. Every commercial installation is followed by full commissioning, documentation, and an ongoing maintenance plan if required.
Vaillant Boiler Installation London
As a trusted installer of one of Europe's leading boiler brands, SMD Energy offers specialist Vaillant boiler installation London services. Vaillant boilers are known for their reliability, efficiency ratings, and extended warranty periods — some models carry up to 12 years of manufacturer warranty when installed by an approved engineer.
From the Vaillant ecoTEC Plus to the Vaillant aroTHERM heat pump range, our engineers are fully trained and manufacturer-approved to install and commission every Vaillant product correctly.
Key Benefits of a New Boiler Installation in London
Upgrading your boiler is not just about having reliable heating — it is a smart long-term investment for your home or business.
1. Lower Energy Bills Modern A-rated boilers convert over 90% of fuel into usable heat. If you are still running a boiler that is ten or more years old, replacing it with a new high-efficiency model could reduce your heating bills by hundreds of pounds per year.
2. Improved Reliability and Fewer Breakdowns Older boilers break down more frequently and cost more to repair. A new boiler installation comes with manufacturer warranty and significantly reduces the risk of winter breakdowns — when you need your heating most.
3. Reduced Carbon Footprint High-efficiency boilers produce fewer emissions than older models. If you opt for electric boiler installation or combine your gas boiler with smart controls and a programmable thermostat, your home's environmental impact drops further.
4. Increased Property Value An energy-efficient boiler and a good EPC (Energy Performance Certificate) rating make a London property more attractive to buyers and tenants. A new boiler installation is one of the most impactful upgrades you can make before selling or letting.
5. Access to Smart Heating Controls New boilers are designed to work seamlessly with smart thermostats — allowing you to control heating from your phone, set zone-by-zone temperatures, and monitor energy usage in real time. This level of control was not available on older systems.
6. Up to 15-Year Warranty SMD Energy offers warranties of up to 15 years on select boiler models. This is only available through approved installers — which is exactly what we are.
Our Boiler Installation Process – Simple, Fast, Stress-Free
We have designed our installation process to make the experience as straightforward as possible, from your first enquiry to the moment your new boiler fires up.
Step 1 – Free Home Survey and Quote Contact SMD Energy and we will arrange a free no-obligation home survey at a time that suits you. Our engineer assesses your property's heating requirements, existing pipework, and the most appropriate boiler type and size.
Step 2 – Tailored Recommendation We do not push any single brand or boiler type. We recommend the right system for your specific property — whether that is a combi boiler for a London flat, a gas boiler for a large family home, or a commercial boiler for a business premises.
Step 3 – Flexible Finance Options Worried about upfront cost? We offer flexible finance options that allow you to spread the cost of your new boiler installation without financial stress. Our team will walk you through what is available.
Step 4 – Installation — Often Next Day SMD Energy offers next-day installation in many cases. Most residential boiler installations are completed within one to two days, causing minimal disruption to your household. Our engineers arrive on time, work cleanly, and leave your home tidy.
Step 5 – Commissioning, Testing, and Handover Once the boiler is installed, we fully commission and test the system — checking every radiator, the hot water output, controls, and safety devices. We then walk you through how to operate your new boiler and controls confidently.
Step 6 – Aftercare and Emergency Support SMD Energy provides 24/7 emergency support after installation. If anything concerns you — however small — our team is reachable around the clock.
Why Choose SMD Energy for Boiler Installation in London?
There is no shortage of heating engineers in London. Here is what sets SMD Energy apart from the rest.
Gas Safe Registered (Registration #624338) Every gas installation we carry out is legally compliant and covered by our Gas Safe registration. This is not optional — it is a legal requirement — and it is something every London homeowner should verify before allowing any engineer to work on their gas appliances.
Which? Trusted Trader Approved SMD Energy holds Which? Trusted Trader status — one of the most recognised quality marks for tradespeople in the UK. This means our work, pricing, and customer service have been independently assessed and verified.
5-Star Google Rating Hundreds of London customers have reviewed SMD Energy with 5 stars. Our reputation is built on quality workmanship, transparent pricing, and engineers who treat your home with respect.
All London Boroughs Covered From north to south, east to west — SMD Energy covers every London borough. Whether you are in Kensington, Hackney, Croydon, Ealing, or anywhere in between, we can reach you quickly and provide the same high standard of service.
Whole-Home Energy Expertise Unlike many boiler-only companies, SMD Energy also installs solar panels, heat pumps, and air conditioning systems. If you are looking to create a truly energy-efficient home — combining a new boiler with solar generation and smart controls — we can design and deliver the complete solution under one roof.
Frequently Asked Questions About Boiler Installation in London
How much does a new boiler installation cost in London? Costs vary depending on the boiler type, brand, and installation complexity. A standard combi boiler installation in a London home typically ranges from £1,800 to £3,500 fully fitted. Commercial boiler installation costs vary based on the size and specification required. We provide free, detailed quotes — contact us for an accurate figure for your property.
How long does boiler installation take? Most residential boiler replacements are completed within one day. More complex installations — such as converting from one boiler type to another, or commercial boiler work — may take two to three days. We offer next-day availability in many areas of London.
Do I need a Gas Safe engineer for boiler installation? Yes — it is a legal requirement in the UK. All gas boiler installations must be carried out by a Gas Safe registered engineer. SMD Energy engineers hold full Gas Safe registration (#624338). Always ask to see this before any engineer begins gas work in your home.
What is the most energy-efficient boiler for a London home? For most London properties, a modern A-rated combi boiler is the most efficient and cost-effective choice. For properties without gas, an electric boiler or air source heat pump may be more suitable. Our engineers will recommend the best option based on your specific property and usage patterns.
Can you install a Vaillant boiler in my London home? Yes. SMD Energy is an approved Vaillant installer, meaning we can offer full manufacturer warranties on Vaillant products. Vaillant boilers are among the most reliable and efficient on the market — speak to our team about which Vaillant model suits your property.
Is there finance available for boiler installation? Yes. SMD Energy offers flexible finance options that allow you to spread the cost of a new boiler installation over monthly payments. Speak to our team when booking your free survey and we will explain the options available to you.
Do you provide commercial boiler installation across London? Yes. We work with businesses, landlords, housing associations, and commercial property managers across all London boroughs. Our commercial boiler installation service includes system design, installation, commissioning, compliance documentation, and ongoing maintenance plans.
What warranties do you offer on boiler installations? We offer warranties of up to 15 years on select boiler models when installed by our approved engineers. Manufacturer warranties vary by brand and model — our team will confirm the specific warranty terms when recommending your boiler.
Get Your Free Boiler Installation Quote Today
Whether you need a simple boiler swap, a full system upgrade, or a large-scale commercial installation — SMD Energy has the engineers, experience, and product range to deliver.
New boiler installation London that is efficient, reliable, and backed by up to 15 years of warranty. Next-day availability. Flexible finance. 5-star rated service across every London borough.
📞 Call us free: 0800 0614645 🌐 Get a free quote: smdenergy.co.uk/boiler-installation-london
Covering all London boroughs including Kensington, Chelsea, Hackney, Islington, Southwark, Ealing, Croydon, Greenwich, Lewisham, Tower Hamlets, Wandsworth, Lambeth, Barnet, Camden, and beyond.












