Vortex Blue: Internal

10 Year guarantee*

Vortex Blue: Internal

Ideal for utility rooms and kitchens, the VortexBlue Internal oil-fired boiler range delivers excellent efficiencies with ultra-low NOx emissions.

The VortexBlue Internal range features the Riello RDB BLU blue flame compact burner alongside the familiar Vortex oil-fired boiler. This market leading combination gives engineers an easy to install, reliable product with the all-important low emissions.

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Features & benefits

  • *10 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
  • Achieves 90.8-94.5% space heating efficiencies
  • Incorporates the latest Riello blue flame burner with cleaner burning operation
  • Each boiler features a simplified pipework arrangement for easier installation
  • Neon diagnostic indicators make for easier fault finding diagnostics
  • Straightforward installation and designed to be simple to service and maintain
  • Compatible with Grant EZ-Fit flue systems
Installing blue flame boilers

Installing blue flame boilers

Grant VortexBlue condensing oil boilers have the same qualities as their Vortex counterpart models but with the added benefit of greener credentials. With their cleaner burners, blue flame boilers provide heating engineers with a solution to fit efficient oil boilers with significantly lower NOx emissions within their customers’ homes.

Blue flame burner technology is very sophisticated but there are plenty of familiar features that installers will recognise. To help heating engineers better their understanding of blue flame oil boiler technology, Grant has shared a blog that covers this topic in detail.


Product code
Set Output
Max Output
NOx Emissions
Tappings Flow/Return
Energy Rating
Load Profile
Energy Label
Product Fiche
VTXBF21 Grant VortexBlue Internal 21 (15-21kW) 21kW 21kW 130kg 860mm 470mm 603mm 90.81 Class 3 22mm Riello RDB Blu a Heating - View View
VTXBF26 Grant VortexBlue Internal 26 (21-26kW) 26kW 26kW 130kg 860mm 470mm 603mm 91.71 Class 3 22mm Riello RDB Blu a Heating - View View


EZ-Fit Flue Range

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

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Home Heating Blog

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