Gas Safe Boiler Specialists
New Boiler Installation in London
Get a new boiler installed from £1,690
Spread the cost of your boiler replacement with our finance package. Ninja Boilers offers fast, affordable boiler installation, boiler replacement, and 0% finance options to make your upgrade easy — energy-efficient heating, expert service, and transparent pricing across London and Greater London.
Our Process
Our Time-Tested, Tried and Trusted Process
From the first call to a fully working boiler — a simple, reliable journey handled by Gas Safe engineers.
Contact us 24/7
Call anytime — our helpful team are here to assist around the clock.
1 Hour Response
Emergency call-outs prioritised. We'll be with you within the hour.
Issue, Sorted
Qualified Gas Safe engineers attend and resolve the issue on site.
Problem, Solved
From start to finish we handle your heating and respect your home.
Get In Touch
Book Your Engineer
Tell us about your boiler — we'll come back with a fixed quote.
Fast New Boiler Installation
From Cold to Comfortable in 24 Hours
Get a brand-new, A-rated boiler installed quickly and affordably with our 12-month 0% interest finance. No deposit required. Fixed prices. Trusted engineers.
New Boiler Options
Energy Efficient & Finance-Friendly
New BoilerNew Boiler Installation in London
Need a new boiler installed in your home or rental property? Our Gas Safe registered engineers install energy-efficient boilers tailored to your household needs. We work with top brands and offer same-day or next-day installation slots.
Explore New Boiler Installation in London
New BoilerBoiler Replacement in London
Is your current boiler old, noisy, or breaking down often? Replace it with a modern A-rated system and start saving on energy bills. We'll safely remove your old boiler and professionally install your new one with minimal disruption.
Explore Boiler Replacement in London
0% APRBoiler Finance
Worried about upfront costs? With Ninja Boilers' flexible finance you can spread the cost of your new boiler over 12 months at 0% interest. Quick approval, no hidden fees, and no deposit required.
Explore Boiler FinanceBoiler Types
Find the Right Fit
Discover the right boiler for your home. Compare combi, system, conventional, and electric models for energy efficiency and performance.
Combi Boilers
Compact, efficient, and ideal for smaller homes or flats. No water tank needed, hot water on demand.
ExploreSystem Boilers
Perfect for homes with higher hot water demand. Works with a cylinder but no loft tank required.
ExploreConventional Boilers
Great for older homes with traditional systems. Uses both a hot water cylinder and cold water tank.
ExploreElectric Boilers
Ideal for properties without a gas supply. Quiet, compact, and eco-friendly with low maintenance.
ExploreNot sure which boiler is right for your home?
Call our expert team on 020 3576 5825 for free advice and find your perfect match today.
Boiler Brands
We've Got a New Boiler for Every Budget
0% Interest Finance Available
Viessmann
- Up to 94% efficiency, compact design
- Built-in Wi-Fi and smart controls
- Low NOx emissions
- 7-year warranty as standard
- Ideal for flats and smaller properties
Worcester Bosch
- Up to 94% energy efficiency
- Quiet operation
- Compatible with smart thermostats
- Up to 10-year warranty
- Trusted brand with excellent reliability
Glow-worm
- A-rated for efficiency
- Budget-friendly without compromising quality
- Compact and quiet
- 7-year warranty with Club Energy installer
- Perfect for rentals and first-time buyers
Navien
- Up to 94% efficiency
- Stainless steel heat exchanger
- Built-in Wi-Fi for smart monitoring
- 10-year warranty as standard
Vaillant
- 94% ErP efficiency rating
- Suitable for medium to large homes
- Quiet Mark certified
- Built in the UK with strong performance
- Great for landlords and growing families
Ideal
Cost-effective, reliable boilers with compact designs, digital controls, and Energy Saving Trust endorsement for efficient heating.
Alpha
Efficient, compact boilers with easy-to-use controls, stainless steel heat exchangers, and strong reliability for cost-conscious homeowners.
Ariston
Modern, energy-efficient boilers with sleek designs, smart connectivity, and high performance for consistent heating and hot water.
Baxi
Affordable, energy-efficient boilers with up to 10-year warranties, hydrogen-ready design, and uSense smart thermostat for enhanced control.
Not sure which boiler is right for your home?
Call our expert team on 020 3576 5825 for free advice and find your perfect match today.
London Specialists
Boiler Installation in London
At Ninja Boilers, we specialise in professional boiler installation in London, delivering energy-efficient heating systems tailored to your home and lifestyle. Whether you're upgrading an old unit or fitting a boiler in a new property, our Gas Safe registered engineers provide fast, reliable service and expert guidance every step of the way. We install top brands like Worcester Bosch, Vaillant, and Ideal — ensuring quality and long-term performance.
How It Works
Get a New Boiler in the Blink of an Eye
It's not just what we do, it's how we do it.
You Answer
Just a few quick questions about your boiler and your home. No technical knowledge required.
You Pick
Choose from fixed-price boiler options, recommended specifically for your setup and budget.
We Fit
Your new boiler, flue, and accessories are installed by a certified engineer in as little as 24 hours.
All-Inclusive
All-Inclusive Installations
Our energy-saving installations come with everything you need, plus more. Whether you're looking to get your heating back on or upgrade to a more efficient system, we've got it covered.
New Boiler
A-rated boiler tailored to your home.
Up to 12 Months 0% APR
Spread the cost interest-free.
Price Promise
Got a cheaper quote? We'll match it.
Full Warranty
Up to 10-year manufacturer cover.
About Ninja Boilers
Reliable Boiler Professionals
A team of full-service, reliable boiler professionals for home and office needs.
Gas Safe Certified
Safety and compliance guaranteed.
0% Interest Finance
Flexible, affordable boiler plans.
Next-Day Installation
Fast turnaround across Greater London.
Upfront Pricing
No hidden fees or surprise costs.
Top Brands
A-rated boilers with up to 10-year warranties.
Smart Controls
Boost efficiency with thermostat upgrades.
Family-Run & Trusted
Honest service backed by years of experience.
London Specialists
Local engineers across every borough.
Need a New Boiler in London?
Call Ninja Boilers today on 020 3576 5825. Trusted local Gas Safe engineers in London for boiler installation, replacement, repair, and maintenance.