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Grant Vortex External

5 Year guarantee*

Grant Vortex External

A highly efficient range of free standing, external, condensing boilers, designed for situations where internal space is at a premium. Since its launch, the external model has been finished in a galvanised casing, however, the range has now been updated to a new goose grey powder coated finish, giving the module a distinctive, aesthetically pleasing, modernised look. 

This range of outdoor condensing boilers features the award-winning unique Grant Vortex heat exchanger and has some of the highest efficiencies available on the market today.  

a Heating

Features & benefits

Installation & commissioning

Installation must comply with the current Building Regulations. As with all oil-fired appliances, Grant condensing boilers require commissioning at the time of installation. This simple process ensures that the boiler is working at peak efficiency which, in turn, will result in lower running costs and long term reliability. Annual maintenance is also made easy by Grant’s cleverly designed front service access to both burner and all the internal serviceable parts. This feature enables Grant Condensing Boilers to be fitted neatly and unobtrusively within either the kitchen, boiler house, or utility room environment. Comprehensive technical information can be found in the installation manual.

  • High efficiency SEAI HARP ‘A’ Rating
  • Features a Riello RDB Burner
  • Optional pipe entry points
  • Comes complete with a factory fitted multi-directional flue
  • Optional side or rear flue exits
  • Includes a factory fitted frost stat preset to 2°C
  • Fully approved to OFTEC Standard and EC directives
  • *One year manufacturer's warranty with five year guarantee on boiler heat exchanger (T&Cs Apply)
Grant announces streamlining of oil boiler ranges

Grant announces streamlining of oil boiler ranges

In August 2022, the Grant Vortex and Euroflame oil fired boiler ranges will be streamlined, with many existing models rationalised to simplify the selection and ordering products and making the process more straightforward overall.

Read more here


Product code
Energy Label
Product Fiche
Set Output
Max Output
NOx Emissions
Energy Rating
Load Profile
VORTMOD1526P Grant Vortex External PCoated 15-26 View - 21kW 26kW 152kg 908mm 800mm 505mm 95 Compliant a Heating -
VORTMOD2636P Grant Vortex External PCoated 26-36 View - 31kW 36kW 169kg 908mm 800mm 505mm 97 Compliant a Heating -
VORTMOD3646P Grant Vortex External PCoated 36-46 View - 41kW 46kW 169kg 908mm 800mm 505mm 92.6 Compliant a Heating -
VORTMOD4670P Grant Vortex External PCoated 46-70 View - 64kW 70kW 309kg 1234mm 945mm 584mm 93.6 Compliant a Heating -



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