Products

Oil Boilers

The award winning Vortex and VortexBlue oil-fired condensing boilers are available in internal, external, combination, boiler house and wall hung models, all of which are endorsed by the Energy Saving Trust.

Vortex Blue: Internal

Vortex Blue: Internal

  • 15kW to 36kW outputs available
  • Up to 94.5% space heating efficiency
  • 10 year guarantee when installed by G1 Installer
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Vortex Pro: Internal

Vortex Pro: Internal

  • 15kW to 70kW outputs available
  • Includes slimline Utility model only 348mm in width
  • Quiet operation
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Vortex Blue: External

Vortex Blue: External

  • 15kW to 36kW outputs available
  • Ideal solution when space within the home is limited
  • 10 year guarantee when installed by G1 Installer
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Vortex Pro: External

Vortex Pro: External

  • 15kW to 70kW outputs available
  • High quality external powder coated casing and durable design
  • Space heating efficiencies of up to 94.5%
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Vortex Blue: Internal Combi

Vortex Blue: Internal Combi

  • 21kW, 26kW & 36kW outputs available
  • Excellent hot water performances across the range
  • 10 year guarantee when installed by G1 Installer
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Vortex Pro: Internal Combi

Vortex Pro: Internal Combi

  • 21kW, 26kW & 36kW outputs available
  • Slimline Combi XS model available
  • Space heating efficiencies of up to 94.5%
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Vortex Blue: External Combi

Vortex Blue: External Combi

  • 21kW, 26kW & 36kW outputs available
  • Durable, high quality powder coated casing
  • 10 year guarantee when installed by G1 Installer
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Vortex Pro: External Combi

Vortex Pro: External Combi

  • 21kW, 26kW & 36kW outputs available
  • Feature Grant’s patented heat exchanger technology
  • Ideally suited when space is at a premium inside the home
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Vortex Boiler House

Vortex Boiler House

  • 15kW up to 70kW outputs available
  • Ideal for installing in garages, cellars and plant rooms
  • Distinctive red, powder coated casing
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Vortex Eco: Internal Wall Hung

Vortex Eco: Internal Wall Hung

  • 12kW up to 21kW outputs available
  • Wall mountable units providing space saving solutions
  • Space heating efficiency of up to 90.5%
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Vortex Eco: External Wall Hung

Vortex Eco: External Wall Hung

  • 12kW up to 21kW outputs available
  • External wall mountable boilers
  • High quality, durable external casing
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Vortex Eco: Internal

Vortex Eco: Internal

  • 15kW to 35kW outputs available
  • Competitively priced condensing boiler range
  • Space heating efficiencies of up to 92.7%
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Vortex Eco: External

Vortex Eco: External

  • 15kW up to 35kW outputs available
  • Competitively priced external oil boiler range
  • Space heating efficiencies of up to 92.7%
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EZ-Fit Internal Low Level Balanced Flues (Yellow System)

EZ-Fit Internal Low Level Balanced Flues (Yellow System)

  • Suitable for Internal Grant Vortex boilers up to 70kW
  • Self-sealing ducts requiring no silicone or tape
  • Optional plume diverter (maximum height = 6 metres)
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EZ-Fit Internal Vertical Balanced Flues (White System)

EZ-Fit Internal Vertical Balanced Flues (White System)

  • Suitable for Internal Grant Vortex boilers up to 70kW
  • Unique connection system ensures easy assembly
  • Supplied as a complete kit
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EZ-Fit Internal High Level Balanced Flues (White System)

EZ-Fit Internal High Level Balanced Flues (White System)

  • Suitable for Internal Grant Vortex boilers up to 70kW
  • Maximum total flue length = 10 metres (deduct 1 metre for each additional 45° elbow used)
  • Flue may be extended horizontally and vertically
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EZ-Fit External High Level / Vertical Flues (Green System) for internal boilers

EZ-Fit External High Level / Vertical Flues (Green System) for internal boilers

  • Suitable for Grant Vortex boilers up to 70kW
  • Supplied in modular form
  • Ideal when a more complicated external flue configuration is required
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EZ-Fit Flexible Vertical Balanced Flues (Red System)

EZ-Fit Flexible Vertical Balanced Flues (Red System)

  • Suitable for Grant Vortex boilers up to 26kW
  • Quick and simple to install
  • Available in 6, 8, 10 and 12 metre packs
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EZ-Fit Vertical conventional flues (Orange System)

EZ-Fit Vertical conventional flues (Orange System)

  • Suitable for Grant Vortex boilers up to 70kW
  • Designed to enable an existing chimney to be utilised
  • Available in 6, 8, 10, 11, 12, 14 and 16 metre flexi packs
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EZ-Fit External Flues (Green System) for outdoor boilers

EZ-Fit External Flues (Green System) for outdoor boilers

  • Suitable for Grant Vortex & VortexBlue external boilers up to 70kW
  • Vertical and horizontal solutions
  • Designed to enable the extension of the flue system supplied with all external modules
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Why upgrade to a Grant oil-fired boiler?

For over forty years, Grant has developed some of the most efficient oil-fired boilers in the UK. A new condensing boiler from Grant has significantly improved efficiencies and performances compared to older oil-fired appliances which can operate with energy efficiency levels as low as 65%. By choosing a Grant boiler, which can achieve energy efficiencies of up to 94.5%, homeowners can lower their fuel usage, reduce their fuel bills and lessen their greenhouse gas emissions.

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