Vortex Pro: Internal

Vortex Pro: Internal

a Heating

10 Year guarantee*

Grant Vortex Pro Internal models are designed to suit kitchens and utility rooms, delivering both choice and performance across the range.

The Vortex Pro Internal range is incredibly efficient, combining the latest Riello burner technology with Grant’s trusted, patented technologies. The models available within range are ideal for direct boiler replacements of older oil-fired models.


Features & benefits

  • *10 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
  • Available in outputs from 15kW up to 70kW
  • Sealed system models also available in outputs from 15kW to up 46kW
  • Incredible space heating efficiencies
  • Quiet operation
  • Designed to be installer-friendly and straightforward to service
  • Compatible with Grant EZ-Fit flue systems
  • This range is biofuel compatible (depending on the type of biofuel and % blend)
  • Heating engineers should visit the Professionals Vortex Pro Internal range webpage to read more about these models

Awards & Accreditations


Case Studies

Introducing Grant’s patented heating technologies

Introducing Grant’s patented heating technologies

Unlike traditional oil-fired boilers, the Vortex condensing boiler has a built-in stainless-steel heat exchanger incorporating Grant’s unique turbulator baffle system which cools the gases to a point where the latent heat, normally lost to the atmosphere through the flue, can be usefully extracted. The additional energy recovered enables the boiler to operate continuously at much higher efficiency levels, resulting in lower heating and hot water running costs.

Discover the complete Grant oil boiler range here.


Product code
Set Output
Max Output
NOx Emissions
Energy Rating
Load Profile
Energy Label
Product Fiche
VTX15/26 Vortex Pro 15-26 21kW 26kW 130kg 860mm 470mm 603mm 91.71 Class 2 a Heating - View View
VTX26/46 Vortex Pro 26-46 41kW 46kW 144kg 898mm 470mm 602mm 90.00 Class 2 a Heating - View View
VTX46/70 Vortex Pro 46-70 64kW 70kW 282kg 1234mm 563mm 782mm 91.61 Class 3 a Heating - View View
VTXS15/26 Vortex Pro System 15-26 21kW 26kW 138kg 860mm 470mm 603mm 91.71 Class 2 a Heating - View View
VTXS26/46 Vortex Pro System 26-46 41kW 46kW 168kg 898mm 470mm 602mm 90.00 Class 2 a Heating - View View


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