Combi · System · Conventional · Electric
Boiler Types UK
Find the Right Fit with Ninja Boilers
The right boiler keeps your home comfortable, efficient and easy to run for years. Compare boiler types and let our Gas Safe engineers help you choose — backed by transparent pricing and 12-month 0% finance.
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Need Help Choosing? Speak to Our Experts
Honest advice, fast quotes and 12-month 0% finance on every boiler installation across Greater London.
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A few quick questions about your property and usage.
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We match you with the ideal boiler type and size.
Fixed-price quote
Transparent pricing with 0% finance available.
Installed fast
Gas Safe engineers fit your new boiler in as little as 24 hours.
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Compare and Choose Wisely
Combi vs System vs Conventional vs Electric
Combi Boilers
Provides heating and hot water on demand from one compact unit. No cylinder or loft tank required — ideal for flats and 1–3 bedroom homes.
- Instant hot water
- Saves space
- Lower install cost
- Compatible with smart thermostats
System Boilers
Works with a hot water cylinder but no loft tank. Great for homes with higher demand or more than one bathroom.
- High hot water capacity
- Multiple taps at once
- Faster install than regular
- Works with solar
Conventional Boilers
Uses both a hot water cylinder and a cold water tank. Best for older systems and homes with low mains pressure.
- Suits older heating systems
- Works with low pressure
- Multiple bathrooms supported
- Hydrogen-ready options
Electric Boilers
Quiet, compact and eco-friendly — perfect for properties without a mains gas connection or low-use flats.
- No flue required
- Quiet operation
- Low maintenance
- Compact footprint
Best Boilers for Small Homes
For flats and 1–2 bedroom homes, compact combi boilers deliver hot water and heating from a single unit — saving space and energy.
Our Top Picks
- Worcester Bosch Greenstar 1000 Combi
- Vaillant ecoFIT Pure Combi
- Ideal Logic+ Combi
- Baxi 200 Combi
Best Boilers for Large Homes
Larger households with multiple bathrooms need higher output and stored hot water — system or conventional boilers are ideal.
Our Top Picks
- Worcester Bosch Greenstar 8000 Life System
- Vaillant ecoTEC Plus System
- Ideal Vogue Max System
- Viessmann Vitodens 100-W System
FAQ
Boiler Type Comparison & Advice
What's the best boiler for a 1-bedroom flat in London?
A compact combi boiler like the Ideal Logic+ or Vaillant ecoFIT Pure is ideal for small flats and low usage.
Can I replace a regular boiler with a combi boiler?
Yes — it's a popular space-saving upgrade, though it may involve pipework changes and removing old tanks.
Are system boilers more energy-efficient than combi boilers?
System boilers are efficient for high-demand homes. For smaller households, combis are typically more cost-effective.
What boiler should I choose if I have low water pressure?
Conventional boilers are best suited to homes with low mains pressure as they rely on tanks for storage.
Do combi boilers work with smart thermostats?
Yes — modern combi boilers are compatible with Nest, Hive and most popular smart controls.
How do I know what size boiler I need?
Boiler size depends on property size, radiators and bathrooms. Speak to our team for a free, tailored recommendation.
Can I get finance for any boiler type?
Yes — all boiler types are available with 12-month 0% interest finance and flexible payment plans.
Not sure which option is right for you?
Call our expert team on 020 3576 5825 for free advice — we'll help you find the perfect fit.
Compare Boilers with Ninja Boilers
From cosy studios to busy family homes, we'll help you compare and choose the perfect boiler. Expert installation, transparent pricing and local London support.