Products
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Support & Specification
Training
Support & Specification
Oil Boilers
Consisting of HVO compatible floor standing models as well as wall hung boiler options, and with outputs ranging from 15kW up to 70kW, the Vortex oil-fired condensing boilers provide installers with choice when it comes to installation.
Grant’s Vortex oil-fired boiler range consists of internal, external, boiler house, combi and wall hung models including heat only, system, and combination boilers with thirty-four models available across the range.
Vortex Pro
Internal
- 15kW to 70kW outputs available
- Sealed system models available
- Straightforward to install and service
Vortex Pro
External
- 15kW to 70kW outputs available
- Factory fitted frost stat, condensate trap and multi-directional flue
- Sealed system kits available
Vortex Pro
Internal Combi
- 21kW, 26kW & 36kW outputs available
- 24ltr expansion vessel supplied as standard
- Slimline Combi XS available which is 515mm wide
Vortex Pro
External Combi
- 21kW, 26kW & 36kW outputs available
- Space heating efficiencies of up to 94.5%
- 24ltr expansion vessel and factory fitted multi-directional flue supplied as standard
Vortex
Boiler House
- 15kW up to 70kW outputs available
- Distinctive red, powder coated casing ideal for garage, cellar and plant room installations
- Flued the same way as utility models
Vortex Eco
Internal Wall Hung
- 16kW up to 21kW outputs available
- Open-vented system and sealed-system models
- Supplied pre-plumbed
Vortex Eco
External Wall Hung
- 16kW up to 21kW outputs available
- Open-vented system and sealed-system models
- Supplied pre-plumbed and with factory fitted flue
Vortex Eco
Internal
- 15kW to 35kW outputs available
- Sealed system models within the range
- Simplified pipework arrangement, casing and control panel
Vortex Eco
External
- 15kW up to 35kW outputs available
- Factory fitted multi-directional flue
- Sealed system models within the range
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G1 Installer Scheme
Looking to fit and endorse Grant products?
The G1 scheme provides installers with the tools they need to fit and endorse Grant UK products - from training through to marketing support
Spares
Looking for a spare part?
Use our online spares catalogue, which lists all the spares and parts we supply for Grant products, to find oil boiler spares, heat pump spares and more
Accessories
Are you looking for flues?
Grant UK supply a comprehensive range of flues to suit all Grant Vortex oil-fired boilers.
Find a Merchant
Use our national merchant search to find a Grant supplier near you
Why install a Grant oil-fired boiler?
Grant boilers are the first choice oil-fired boiler for many installers. Their quality build, excellent efficiencies and reliable operation make the Vortex oil boilers popular installation choices to suit many different types of property. All Grant oil-fired boilers achieve excellent performances and are available with guarantees up to 10 years when installed through the G1 Installer Scheme.
Case Studies
Grant boilers combine choice, quality and service to be an installer’s favourite oil boiler brand
G1 Installers, Marshall Heating Ltd, completed the installation of a Grant Vortex Eco Utility oil boiler in the village of Benenden, Kent, in October this year and we caught up with them to discover more about why this boiler, and Grant’s other Vortex and VortexBlue models, are the preferred brand of oil-fired boilers for this installer.
Primary school in Cornwall makes the swap to HVO biofuel
Gwinear Primary School in Cornwall has upgraded its heating system and switched to renewables by installing a Grant Vortex oil boiler which is using HVO biofuel, becoming the first school in the UK to use this fossil free liquid fuel.
Related Articles
News G1
10 year guarantee now available with Grant Vortex Pro HVO compatible oil boilers
Grant UK is excited to announce that its Vortex Pro oil-fired boilers are now available with a ten year guarantee when installed by a G1 Installer. This means that all Grant Vortex Pro Internal, External and Combi models which are installed on or after 1st February 2023 can receive a 10 year guarantee when installed and registered by a member of the G1 Scheme.
Technical Oil Legislation
How to do a heat loss calculation for an oil boiler installation
The changes to Part L Building Regulations, effective from 15th June 2022, stipulate that a full room by room heat loss calculation must be carried out prior to installing a boiler. Grant UK has developed an Oil Heat Loss Calculator and in this blog, Steve Ellison, Grant UK’s Assistant Training Manager, shares a step-by-step guide to help installers understand how to use this calculator.
News Product
Grant UK launches EvoLink Hybrid System Hub
An innovative new addition to Grant UK’s hybrid heating range is now available with the launch of the EvoLink Hybrid System Hub. This wall-mounted, compact unit cleverly allows an Aerona³ heat pump to be combined with an existing fossil fuel heat source, providing hard to heat homes with the opportunity to reduce their carbon emissions when a standalone heat pump may not be possible.
We have an app for that
Grant TechBox is exactly what its name suggests – an electronic source which stores all the Grant product technical manuals as downloads.
