New Boiler Replacement
New Boiler Replacement in London
Get a new boiler installed from £1,690
Spread the cost with our 0% finance package.
Need a new boiler installed? Ninja Boilers delivers fast, professional, energy-efficient boiler replacement in London — backed by 0% finance and trusted Gas Safe engineers.
Free, No-Obligation Quote
Get a Free Quote
Tell us about your boiler — we'll come back with a fixed quote.
Boiler Installation Services
Energy efficient & finance-friendly
Whether you need a like-for-like swap or a full system upgrade, our engineers tailor every replacement to your home.
Gas Boiler Replacement
A-rated gas boilers from Worcester Bosch, Vaillant, Ideal and more — tailored to your layout and hot water usage.
Electric Boiler Replacement
No gas supply? We fit compact, low-maintenance electric boilers ideal for small properties and modern flats.
Smart Thermostat Upgrade
Add a smart thermostat to boost efficiency and control your heating from your phone.
From cold to comfortable
A brand-new boiler in as little as 24 hours
Get an A-rated boiler installed quickly and affordably with our 12-month 0% interest finance. No deposit required, fixed prices, trusted engineers.
- Fixed-price quotes — no surprises
- Top brands with up to 10-year warranties
- Smart controls available on every install
- Old boiler removed and disposed responsibly
Our Process
A simple, hassle-free journey
- 01
You Answer
A few quick questions about your boiler and home — no technical knowledge needed.
- 02
You Pick
Choose from fixed-price boiler options, recommended for your setup and budget.
- 03
We Survey
A Gas Safe engineer confirms the install plan and books a slot that suits you.
- 04
We Fit
New boiler, flue and accessories installed by a certified engineer in as little as 24 hours.
- 05
Aftercare
Smart-control setup, demo and ongoing servicing options — we're here long after the install.
Why Choose Us
Why homeowners across London choose Ninja Boilers
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
Family-Run & Trusted — honest service backed by years of experience
FAQs
Frequently asked questions
Need a new boiler in London?
Trusted, local Gas Safe engineers for installation, replacement and aftercare. Call 020 3576 5825 today.