10 Year guarantee^*

Vortex Blue: Internal

The VortexBlue Internal oil-fired boiler range has been designed to suit kitchen and utility room environments, combining Grant’s proven boiler technology with a revolutionary blue flame burner.

This range features a sleek white casing and neon diagnostic indicators within the control panel. With its state of the art blue flame burner, the VortexBlue Internal boilers deliver reliable, efficient operation with ultra-low NOx emissions.

a Heating

Features & benefits

*10 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
Available in outputs of 15-21kW, 21-26kW and 26-36kW
Exceptionally efficient achieving between 90.8-94.5% space heating efficiencies
Using the Riello blue flame burner, this results in a much cleaner combustion process producing very low NOx emissions
Sealed system models also available within the range
Neon diagnostic indicators make diagnostics easier
Designed to be installer friendly and simple to maintain
Compatible with Grant EZ-Fit flue systems
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 VortexBlue Internal range webpage to read more about these models

Grant Solar Thermal system and thermal store partner up with VortexBlue oil boiler

Case Study

A Grant VortexBlue proves to be the ideal boiler replacement for a property in Berkshire

Case Study

An introduction to blue flame technology

As the name suggests, the flame produced in a blue flame burner is blue in colour, rather than the usual yellow colour of standard burners fitted in Grant Vortex boilers. This blue flame results in a much cleaner combustion process, producing extremely low NOx emissions while also operating at very high efficiency levels.

Since September 2018, oil boilers installed in the UK have had to meet lower NOx emission targets and these targets may become more stringent in the coming years. With the VortexBlue range, Grant has taken the decision to future proof oil fired boilers by moving to very low NOx, blue flame technology well in advance of legislation.

Specification

Product code	Model	Set Output	Max Output	Weight	Height	Width	Depth	Efficiency	NOx Emissions	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	a Heating	-	View	View
VTXBF26	Grant VortexBlue Internal 26 (21-26kW)	26kW	26kW	130kg	860mm	470mm	603mm	91.71	Class 3	a Heating	-	View	View
VTXBF36	Grant VortexBlue Internal 36 (26-36kW)	36kW	36kW	144kg	900mm	470mm	603mm	94.56	Class 3	a Heating	-	View	View
VTXSBF21	Grant VortexBlue Internal System 21 (15-21kW)	21kW	21kW	130kg	860mm	470mm	603mm	90.81	Class 3	a Heating	-	View	View
VTXSBF26	Grant VortexBlue Internal System 26 (21-26kW)	26kW	26kW	130kg	860 mm	470 mm	603mm	91.71	Class 3	a Heating	-	View	View
VTXSBF36	Grant VortexBlue Internal System 36 (26-36kW)	36kW	36kW	144kg	900mm	470mm	603mm	94.56	Class 3	a Heating	-	View	View