Navien Boiler Specialists
Navien Boilers in London
0% finance available for 12 months
Expert Navien installation, repair and servicing across London.
We install Navien boilers across London — high-efficiency condensing technology, sleek design, low emissions and 12-month 0% finance.
Free, No-Obligation Quote
Get a Free Quote
Tell us about your boiler — we'll come back with a fixed quote.
Popular Navien Models
Top Navien boilers we install
We fit the full Navien range and help you pick the right model for your home, hot water demand and budget.
NCB 300 Combi
Compact yet powerful — perfect for small to medium homes.
NCB 500 Combi
Higher hot water flow rate for larger households.
NCB 700 ON
Industry-leading modulation range and integrated smart control.
Why Navien
Industry-leading efficiency and modulation
Navien is a global leader in high-efficiency condensing technology — ultra-high energy efficiency, low emissions and smart home compatibility.
The UK range is designed for British heating needs with excellent hot water performance and robust warranties.
Is a Navien boiler right for you?
Best suited for…
- High-efficiency condensing tech and low CO₂ emissions
- Quiet operation and modern design
- Smart compatibility (OpenTherm, weather compensation)
- Long warranties and low long-term running costs
Our Navien Services in London
Complete Navien boiler support
- Installation by Qualified Gas Safe Engineers — Tidy, compliant fitting.
- System Upgrades & Smart Control Setups — Future-proof your home.
- Annual Servicing & Efficiency Checks — Keep performance high.
- 0% APR Finance Over 12 Months — Hassle-free upgrades.
- Warranty Registration & Ongoing Support — We handle the paperwork.
Our Process
A simple, hassle-free journey
- 01
Free Survey
We assess your home and recommend the right Navien boiler for your needs.
- 02
Fixed Quote
Transparent, all-inclusive pricing with 0% finance options.
- 03
Book Install
Pick a date that suits — next-day fitting often available.
- 04
Expert Fit
Gas Safe engineer installs your Navien boiler, flue and controls.
- 05
Aftercare
Warranty registration, smart-control setup and ongoing servicing.
Why Choose Us
Why London homeowners choose Ninja Boilers
Trusted local Gas Safe engineers across Greater London
Transparent fixed pricing — no hidden costs
Installation in as little as 24 hours
0% finance over 12 months, longer plans available
Manufacturer-backed extended warranties
Honest aftercare from a family-run team
FAQs
Frequently asked questions
Book a Navien boiler engineer in London
From installation to aftercare, Ninja Boilers is your trusted Navien partner. Call 020 3576 5825 for a free quote today.