5 Year guarantee^*

Vortex Pro: External

The Grant Vortex Pro range has some of the highest energy efficiency ratings in the UK which not only significantly lowers fuel bills but also considerably reduces greenhouse gas emissions and lessens the environmental impact of domestic hot water and heating systems. They incorporate the latest Riello low NOx burner technology with Grant’s patented heat exchangers to give an award winning range that meets the 2018 low NOx emission targets.

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Features & benefits

The Grant Vortex Pro external models combine our existing proven condensing boiler technology with the latest Riello RDB low NOx compact burner.

The Vortex Pro Range of external modules offers the same unique features as the Eco External modules including the factory fitted multi-directional flue, high quality external powder coated casing, built in frost protection, mains isolating switch and a test switch. However, in addition, the boilers have a higher efficiency level and are factory wired to receive an ‘optional’ RF (radio frequency) wireless programmer.

Sealed System Kits

The Grant Pro range of Standard Vortex external modules can be converted to sealed system operation by purchasing a pre-assembled kit from Grant UK. The sealed system kit includes an expansion vessel (size varies), automatic air vent, pressure relief valve and circulating pump. A filling loop and pressure gauge are also supplied as part of the kit. These can be fitted within the module casing, or ideally in a convenient site within the building, located between the cold main and central heating return.

Compliant with September 2018 low NOx legislation
Outputs ranging from 15-70kW
90.7- 93.3% Gross SAP2009 annual efficiency
5 year guarantee when installed by a G1 accredited installer (T&C’s apply)
Factory-fitted multi-directional flue
Built-in frost protection
Fitted with tried and trusted Riello RDB Lo-NOx burner
Unique Grant Vortex stainless steel heat exchanger
Exceptionally quiet operation

Grant is the only oil boiler manufacturer to achieve Which? Best Buys for three years running

Consumer group Which? have published the results of their 2019 oil boiler survey. Amongst the range of products to receive Which? Best Buys this year are all of Grant’s Vortex Pro Utility oil boilers. This is the third year running that Grant boilers have achieved this accolade making them the only oil boiler brand to be awarded Which? Best Buys in 2017, 2018 and 2019.

The Which? Best Buy logo is widely recognised as an endorsement that reflects confidence, trust and reliability in products. The Which? Best Buys and the supporting surveys play an important role in the decision-making process for householders researching new appliances for their home. Grant Engineering is therefore thrilled to have the high-quality build of their Vortex Pro Utility models, for example, acknowledged in the latest Which? survey with Best Buy status.

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Configure your flue

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Specification

Product code	Model	Set Output	Max Output	Weight	Height	Width	Depth	Efficiency	NOx Emissions	Tappings Flow/Return	Burner	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	22mm	Riello RDB	a Heating	-	View	View
VTXOM15/26	Vortex Pro External 15-26	21kW	26kW	143kg	908mm	505mm	800mm	91.71	Class 2	22mm	Riello RDB	a Heating	-	View	View
VTXOM26/36	Vortex Pro External 26-36	31kW	36kW	162kg	908mm	505mm	800mm	94.56	Class 2	28mm	Riello RDB	a Heating	-	View	View
VTXOM36/46	Vortex Pro External 36-46	41kW	46kW	162kg	908mm	505mm	800mm	90.00	Class 2	28mm	Riello RDB	a Heating	-	View	View
VTXOM46/58	Vortex Pro External 46-58	52kW	58kW	274kg	1240mm	587mm	945mm	91.94	Class 2	1 1/4" BSPmm	Riello RDB	a Heating	-	View	View
VTXOM58/70	Vortex Pro External 58-70	64kW	70kW	288kg	1240mm	587mm	945mm	91.61	Class 2	1 1/4" BSPmm	Riello RDB	a Heating	-	View	View