Vortex Pro: Internal

Vortex Pro: Internal

a Heating

10 Year guarantee*

Grant Vortex Pro Internal oil boilers are an award winning range with excellent efficiencies, reliable operation and simple installation.

With outputs from 15kW up to 70kW, the Vortex Pro Internal range gives installers choice when it comes to oil boiler installations. Each boiler is very efficient in operation and features the latest Riello technology. Sealed system models are also available within the range.



Features & benefits

  • *10 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
  • Models ranging in outputs from 15kW up to 70kW
  • Sealed system models also available in 15-26kW and 26-46kW
  • Achieves excellent space heating efficiencies
  • Sealed system versions include a factory fitted expansion vessel, filling loop, pressure gauge, automatic air vent, pressure relief valve and high efficiency circulating pump, enabling boilers to be installed without the need for a feed and expansion tank in the loft
  • Factory fitted condensate trap within the boiler casing
  • Easy to install, service and maintain
  • Compatible with Grant EZ-Fit flue systems
  • This range is biofuel compatible (depending on the type of biofuel and % blend)

Awards & Accreditations


Case Studies

Why do installers choose Grant boilers?

Why do installers choose Grant boilers?

Grant’s extensive Vortex oil-fired boiler range consists of internal, external, boiler house, combi and wall hung models. Incredibly efficient and incorporating low NOx burner technology, every Vortex oil boiler has been designed to deliver reliable home heating sustainably. From slim utility models through to durable, powder coated external variants, the Vortex range of oil-fired boilers provides customers with chose.

Read more about the complete Grant oil boiler range available to installers here.


Product code
Set Output
Max Output
NOx Emissions
Tappings Flow/Return
Energy Rating
Load Profile
Energy Label
Product Fiche
VTX15/26 Vortex Pro 15-26 21kW 26kW 130kg 860mm 470mm 603mm 91.71 Class 2 22mm Riello RDB a Heating - View View
VTX26/46 Vortex Pro 26-46 41kW 46kW 144kg 898mm 470mm 602mm 90.00 Class 2 28mm Riello RDB a Heating - View View
VTX46/70 Vortex Pro 46-70 64kW 70kW 282kg 1234mm 563mm 782mm 91.61 Class 3 1¼" BSPmm Riello RDB a Heating - View View
VTXS15/26 Vortex Pro System 15-26 21kW 26kW 138kg 860mm 470mm 603mm 91.71 Class 2 22mm Riello RDB a Heating - View View
VTXS26/46 Vortex Pro System 26-46 41kW 46kW 168kg 898mm 470mm 602mm 90.00 Class 2 28mm Riello RDB a Heating - View View


EZ-Fit Flue Range

Grant UK supply a comprehensive range of flue systems to suit all Grant Vortex oil-fired boiler ranges

View the Range

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