5 Year guarantee^*

Vortex Pro: Internal

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 internal models combine our existing proven condensing boiler technology with the latest Riello RDB low NOx compact burner.

The Grant Vortex Pro Range boilers have very high SAP 2009 gross seasonal efficiencies of between 90.7 - 93.3% and feature the ‘award winning’ unique Grant Vortex stainless steel condensing heat exchanger, and turbulator baffle system. The 15-21 utility model has been designed to fit within a kitchen unit and, due to its reduced width, can be used as a direct replacement for most older oil-fired boilers. Sealed system versions are also available. These include a factory fitted expansion vessel, filling loop, pressure gauge, automatic air vent, pressure relief valve and high efficiency circulating pump, enabling boilers to be installed without the need for a feed and expansion tank in the loft

All Grant Vortex boilers are easy to install and can either be connected to a conventional ‘stainless steel’ flue or one of Grant’s EZ-Fit flue options using an existing chimney. Unlike traditional oil-fired boilers the Grant Vortex condensing boiler has a built-in stainless steel heat exchanger incorporating our unique turbulator baffle system which cools the gases to a point where the latent heat, normally lost to the atmosphere through the flue, can be usefully extracted. The additional energy recovered enables the boiler to operate continuously at much higher efficiency levels, resulting in lower heating and hot water running costs.

Award winning range
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)
Sleek white casing
Exceptionally quiet operation
Unique Grant Vortex stainless steel heat exchanger
Fitted with tried and trusted Riello RDB Lo-NOx burner
Compliant with September 2018 low NOx legislation

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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Specification

Product code	Model	Set Output	Max Output	Weight	Height	Width	Depth	Efficiency	NOx Emissions	Energy Rating	Load Profile	Energy Label	Product Fiche
VTX15/21	Vortex Pro Utility 15-21	21kW	21kW	97kg	855mm	348mm	566mm	90.81	Class 2	a Heating	-	View	View
VTX15/26	Vortex Pro Utility 15-26	21kW	26kW	130kg	860mm	470mm	603mm	91.71	Class 2	a Heating	-	View	View
VTX26/36	Vortex Pro Utility 26-36	31kW	36kW	144kg	900mm	470mm	603mm	93.3	Class 2	a Heating	-	View	View
VTX36/46	Vortex Pro Utility 36-46	41kW	46kW	144kg	900mm	470mm	603mm	90.00	Class 2	a Heating	-	View	View
VTX46/58	Vortex Pro Utility 46-58	52kW	58kW	268kg	1234mm	563mm	786mm	91.94	Class 2	a Heating	-	View	View
VTX58/70	Vortex Pro Utility 58-70	64kW	70kW	282kg	1234mm	563mm	786mm	91.61	Class 3	a Heating	-	View	View
VTXS15/26	Vortex Pro Utility System 15-26	21kW	26kW	138kg	860mm	470mm	603mm	91.71	Class 2	a Heating	-	View	View
VTXS26/36	Vortex Pro Utility System 26-36	31kW	36kW	167kg	900mm	470mm	603mm	93.3	Class 2	a Heating	-	View	View
VTXS36/46	Vortex Pro Utility System 36-46	41kW	46kW	168kg	900mm	470mm	603mm	90.00	Class 2	a Heating	-	View	View

Downloads

Grant Vortex Oil Condensing Range Brochure - October 2019

Grant Vortex Burner Settings - UK - DOC 0140 - Rev 1-3 - December 2019

Grant Vortex Utility and Utility System - (installer) - UK - DOC 0120 - Rev 2-0 - November 2019

Customer Reviews

21 January

Grant Kitchen/Utility Pro Oil boiler.

I have purchased a Grant Kitchen/Utility Pro Oil boiler. The quality of internal components was the primary dr...

Edward Noakes

12 June

Grant produces top quality at affordable prices

Grant produces top quality at affordable prices.In our opinion and many others they are the best in the market...

Aqua plumbing services

18 July

Most impressed Retired Engineer

Bought as a replacement for an oil fired range boiler, our favourite plumber installed the Grant boiler withou...

Graham Stanley

Read customer reviews

Accessories

Grant Vortex Mag One Magnetic Filter

Filters magnetite and non-ferrous debris
Simple to install, easy to clean, easy to drain design
12000 gauss neodymium magnet

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EZ Flues: Internal low level balanced flues (yellow system)

Suitable for Internal Grant Vortex boilers up to 70kW
Self-sealing ducts requiring no silicone or tape
Optional plume diverter (maximum height = 6 metres)

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EZ-Fit Internal Vertical Balanced Flues (White System)

Suitable for Internal Grant Vortex boilers up to 70kW
Unique connection system ensures easy assembly
Supplied as a complete kit

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EZ-Fit Internal High Level Balanced Flues (White System)

Suitable for Internal Grant Vortex boilers up to 70kW
Maximum total flue length = 10 metres (deduct 1 metre for each additional 45° elbow used)
Flue may be extended horizontally and vertically

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