Grant Vortex Boiler House 15/26 26kW Condensing Oil Boiler

£1551.59 (Inc. VAT)

In Stock




This Grant Vortex Boiler House Boiler is perfect for hard-to-access areas where a white cased utility boiler is less desirable, such as a cellar or plant room. The boiler features an eye-catching powder-coated casing in Grant’s iconic red, giving it a distinctive appearance.

Highly efficient, it also offers exceptional performance, boasting low running costs and space heating efficiencies of up to 91.7%.

On top of the same technologies utilised by other Grant boiler models, the boiler has an externally mounted Riello RDB burner, a unique stainless steel heat exchanger, and the latest Riello low NOx burner technology. It’s biofuel-compatible and is also compatible with Grant EZ-Fit flue systems.

For peace of mind, the boiler comes with a 5-year guarantee when installed by a G1 installer, subject to Grant’s terms and conditions.


  • Perfect for areas that are hard to access, e.g. cellars and plant rooms
  • Alternative to a white cased utility boiler
  • Red powder-coated casing
  • Highly efficient - space heating efficiencies of up to 91.7%
  • Low running costs
  • Externally mounted Riello RDB burner
  • Unique stainless steel heat exchanger
  • Latest Riello low NOx burner technology
  • HVO/biofuel-compatible (please note that this depends on the biofuel type and blend percentage)
  • Compatible with Grant EZ-Fit flue systems
  • Set output: 21kW
  • Max output: 26kW
  • 5-year guarantee when installed by a G1 installer (terms and conditions apply – please see brochure for additional details)


Technical Drawings



Grant Vortex Boiler House 15/26 26kW Condensing Oil Boiler Specifications
Fitting Location Internal
Weight (Kg) 125
Boiler/Product Type Oil Boiler
Sub Type Oil Regular
Colour Red
Guarantee (Years) 5
Width (mm) 431
Height/Length (mm) 891
Depth (mm) 594
Heat Output (kW) 26
Fuel Type Oil

Grant Vortex Boiler House 15/26 26kW Condensing Oil Boiler


£1,551.59 (Inc. VAT)

Stock status: In Stock

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30 Day Returns

Returns Policy - Changed Your Mind?

If you change your mind about the product when you receive it you can notify us any time within 30 days and return it for a full refund at your own cost. Any refunds will be made within 30 days of receiving your returned item. You are expected to cover the cost to return the item and your initial delivery charge will not be refunded.

More details here

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