10 Year guarantee^*

Vortex Blue: External

The VortexBlue External range features oil boiler models which are the ideal solution when space within the home is limited.

Incorporating the latest ultra-low NOx Riello burner technology, the VortexBlue External oil boilers have a high quality, external powder-coated casing and built-in frost protection designed for all weather conditions.

a Heating

Features & benefits

*10 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
Available in outputs of 21-26kW
High performing, efficient range achieving space heating efficiencies of between 90.8-94.5%
Durable coating designed for reliable operation outdoors
Features ultra-low NOx blue flame burner technology from Riello
Supplied with a factory fitted multi-directional flue, saving time and money
Sealed system kits available for all models
Heating engineers should visit the Professionals VortexBlue External range webpage to read more about these models

Martin Roberts warms up with a Grant VortexBlue

Case Study

Out with the old and in with the Blue!

Case Study

Partnering technologies

VortexBlue oil-fired boilers cleverly combine the latest ultra-low NOx blue flame burner technology with the high efficiencies expected of a Grant boiler. Homeowners can therefore enjoy a highly efficient heating system with lower emissions compared to other boilers. To further reduce their carbon footprint, homeowners can add a solar thermal system to work alongside their VortexBlue boiler, harnessing the energy from the sun to provide hot water and reducing the demand on the boiler.

To see this concept in action, read one of our case studies which follows the installation of Grant Solar Thermal system with a VortexBlue oil-fired boiler.