Tel: 01380 736920 | Email: info@grantuk.com
Oil Boilers, Biomass Boilers, Solar PV, Air Source Heat Pumps, Hot Water Cylinders

Welcome to Grant UK

As a leading heating company in the UK and Ireland (see Grant Ireland), we have been designing and manufacturing reliable and easy to install heating products for over 35 years.

From our award winning Vortex oil fired condensing boilers to the latest renewable technologies like solar thermal, air source heat pumps, cylinders and the new Spira condensing biomass boilers (wood pellet), our heating systems have a reputation for quality that is second to none.

We combine precision engineering, innovation, performance and value for money to produce sustainable heating solutions that are trusted by both installers and householders. There is never a compromise on quality. We design all products so that you can be sure that the durability and efficiency are sector leading. Our belief in simple solutions ensures that, while our technology is sophisticated, our products are low maintenance and easy to install. For a high quality, reliable and sustainable heating system, trust in Grant.



Our Products
Oil Fired Condensing Boilers
Heating Controls
Solar Thermal
Hot Water Cylinders
Air Source Heat Pumps
Grant Biomass Boilers
Information Downloads


  • Vortex Mag-One Magnetic Filter launch

    • Grant UK has announced the launch of its installer friendly Vortex Mag-One Magnetic Filter, which when fitted, provides protection for all types of central heating systems up to 36kW. Using a simple to install, triple action filtration design, the Vortex Mag-One filters magnetite and non-ferrous debris from central heating systems with […]

  • Grant wins prestigious OFTEC excellence award

    • Grant has won a prestigious accolade at the 10th OFTEC Awards for Excellence, which were held on 24th June at Nailcote Hall, Warwickshire. OFTEC is the Oil Firing Technical Association and represents the oil heating industry in the UK and the Republic of Ireland. Up against some stiff competition, Grant […]

  • Vortex Mag-One Magnetic Filter launch

    • Grant UK has announced the launch of its installer friendly Vortex Mag-One Magnetic Filter, which when fitted, provides protection for all types of central heating systems up to 36kW. Using a simple to install, triple action filtration design, the Vortex Mag-One filters magnetite and non-ferrous debris from central heating systems with […]

  • Grant wins prestigious OFTEC excellence award

    • Grant has won a prestigious accolade at the 10th OFTEC Awards for Excellence, which were held on 24th June at Nailcote Hall, Warwickshire. OFTEC is the Oil Firing Technical Association and represents the oil heating industry in the UK and the Republic of Ireland. Up against some stiff competition, Grant […]

  • Vortex Mag-One Magnetic Filter launch

    • Grant UK has announced the launch of its installer friendly Vortex Mag-One Magnetic Filter, which when fitted, provides protection for all types of central heating systems up to 36kW. Using a simple to install, triple action filtration design, the Vortex Mag-One filters magnetite and non-ferrous debris from central heating systems with […]

  • Grant wins prestigious OFTEC excellence award

    • Grant has won a prestigious accolade at the 10th OFTEC Awards for Excellence, which were held on 24th June at Nailcote Hall, Warwickshire. OFTEC is the Oil Firing Technical Association and represents the oil heating industry in the UK and the Republic of Ireland. Up against some stiff competition, Grant […]

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