Not sure which boiler you need?
Not sure which boiler you need?

Vaillant Boilers

Vaillant Boilers

Combi & System Boiler Installation & Replacement (UK)

Vaillant boilers are a premium choice for many UK homeowners, known for high efficiency, strong build quality and a wide range of combi, system and regular models. Whether you’re replacing an ageing boiler or upgrading to improve performance and running costs, Vaillant offers options suited to everything from compact homes to larger properties with higher hot water demand.

On this page you can explore Vaillant boiler models with clear, comparable details to help you shortlist the right fit for your home. If you’re not sure where to start, consider your current boiler type and how you use hot water day-to-day (number of bathrooms, simultaneous showers, etc.) — we’ll help guide you towards a suitable Vaillant boiler and a straightforward installation package.

Recommended Boilers

Ecofit Pure 412 Heat Only
  • Regular Gas Boiler
  • 12.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 415 Heat Only
  • Regular Gas Boiler
  • 15.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 418 Heat Only
  • Regular Gas Boiler
  • 18.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 425 Heat Only
  • Regular Gas Boiler
  • 25.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 430 Heat Only
  • Regular Gas Boiler
  • 30.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 435 Heat Only
  • Regular Gas Boiler
  • 34.8kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 612 System
  • System Gas Boiler
  • 12.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 615 System
  • System Gas Boiler
  • 15.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 618 System
  • System Gas Boiler
  • 18.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 625 System
  • System Gas Boiler
  • 25.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecofit Pure 630 System
  • System Gas Boiler
  • 30.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 412 Heat Only
  • Regular Gas Boiler
  • 12.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 415 Heat Only
  • Regular Gas Boiler
  • 15.1kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 418 Heat Only
  • Regular Gas Boiler
  • 18.3kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 424 Heat Only
  • Regular Gas Boiler
  • 24.6kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 430 Heat Only
  • Regular Gas Boiler
  • 30.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 435 Heat Only
  • Regular Gas Boiler
  • 35.1kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 615 System
  • System Gas Boiler
  • 15.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 630 System
  • System Gas Boiler
  • 30.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years

Other Boilers

Ecotec 46KW System
  • System Gas Boiler
  • 46kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ecotec 65KW System
  • System Gas Boiler
  • 65kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Ecotec Exclusive Green Iq 627 System
  • System Gas Boiler
  • 26.7kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 48KW System
  • System Gas Boiler
  • 48kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Ecotec Plus 612 System
  • System Gas Boiler
  • 12.2kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 618 System
  • System Gas Boiler
  • 18.5kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 624 System
  • System Gas Boiler
  • 24.4kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 637 System
  • System Gas Boiler
  • 37.6kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 10 years
 Ecotec Plus 64KW System
  • System Gas Boiler
  • 64kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 5 years
 Home 12KW Heat Only
  • Regular Gas Boiler
  • 12kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Home 12KW System
  • System Gas Boiler
  • 12kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Home 15KW Heat Only
  • Regular Gas Boiler
  • 15kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Home 15KW System
  • System Gas Boiler
  • 15kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Home 18KW Heat Only
  • Regular Gas Boiler
  • 18kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Home 18KW System
  • System Gas Boiler
  • 18kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Home 25KW Heat Only
  • Regular Gas Boiler
  • 25kW
  • Band rating: B
  • ERP rating: A
  • Warranty: 2 years
 Home 25KW System
  • System Gas Boiler
  • 25kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years
 Home 30KW Heat Only
  • Regular Gas Boiler
  • 30kW
  • Band rating: A
  • ERP rating: A
  • Warranty: 2 years

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