Energy Savings Trust HVO
Vortex Pro: External

5 Year guarantee*

Vortex Pro: External

The Vortex Pro External boilers incorporate all the high quality components featured in the Pro Utility Range within a powder coated external casing.

Exceptionally efficient, the Vortex Pro External boilers are some of the highest efficiency outdoor oil-fired boilers. All the boilers within this range have a high quality powder coated external casing and, when heating outputs of up to 70kW are required and the preferred location is outside, the Vortex Pro External range can deliver the solution.

a Heating

Features & benefits

  • *5 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
  • Available in outputs of between 15kW up to 70kW
  • Incredible space heating efficiencies of 90.0 – 94.5%
  • Sealed system kits available for 15-21kW, 15-26kW and 26-46kW models
  • Factory fitted multi-directional flue saves time with installation
  • High quality, external powder coated casing and built-in frost protection designed for all weather conditions
  • Quiet operation
  • Features Grant’s unique Vortex stainless steel heat exchanger
  • As with all of Grant’s Vortex oil boilers, this range is biofuel compatible (depending on the type of biofuel and % blend)
  • Heating engineers should visit the Professionals Vortex Pro External range webpage to read more about these models
Why upgrade your oil boiler?

Why upgrade your oil boiler?

Installing a high efficiency oil boiler offers homeowners multiple benefits. The appliances which work most efficiently and effectively use less fuel which in turn can reduce heating bills for households. Not only does the reduced fuel usage result in lower heating and hot water running costs, but it is also more sustainable. The lower fuel demand enables householders to stretch their oil further and to enjoy the advantages that this delivers.

If you are looking to upgrade your heating system, discover the solutions available to you from Grant with our handy online product selector tool.


Product code
Set Output
Max Output
NOx Emissions
Energy Rating
Load Profile
Energy Label
Product Fiche
VTXOM15/21 Vortex Pro External 15-21 21kW 21kW 109kg 879mm 385mm 734mm 90.81 Class 2 a Heating - View View
VTXOM15/26 Vortex Pro External 15-26 21kW 26kW 143kg 908mm 505mm 800mm 91.71 Class 2 a Heating - View View
VTXOM26/36 Vortex Pro External 26-36 31kW 36kW 162kg 908mm 505mm 800mm 94.56 Class 2 a Heating - View View
VTXOM36/46 Vortex Pro External 36-46 41kW 46kW 162kg 908mm 505mm 800mm 90.00 Class 2 a Heating - View View
VTXOM46/58 Vortex Pro External 46-58 52kW 58kW 274kg 1240mm 587mm 945mm 91.94 Class 2 a Heating - View View
VTXOM58/70 Vortex Pro External 58-70 64kW 70kW 288kg 1240mm 587mm 945mm 91.61 Class 2 a Heating - View View


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