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, 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


  • Grant UK supports DIY SOS: The Big Build

    • If you watched the episode of DIY SOS: The Big Build, which aired on 17th June on BBC One, it is unlikely that you remained dry-eyed. The renovation of Liz and Jason Liversidge’s property in Hull not only transformed their home but it has also changed their way of life, […]

  • Small space? Big deal! Grant UK launches the Vortex Pro Combi XS

    • Leading heating specialist Grant UK has launched the Vortex Pro Combi XS, the slimmest 26kW oil-fired condensing combi boiler on the market. At only 515mm wide, the XS is designed as a replacement for older inefficient standard efficiency oil-fired combis, which tend to be smaller in physical size. The Grant […]

  • Grant UK supports DIY SOS: The Big Build

    • If you watched the episode of DIY SOS: The Big Build, which aired on 17th June on BBC One, it is unlikely that you remained dry-eyed. The renovation of Liz and Jason Liversidge’s property in Hull not only transformed their home but it has also changed their way of life, […]

  • Small space? Big deal! Grant UK launches the Vortex Pro Combi XS

    • Leading heating specialist Grant UK has launched the Vortex Pro Combi XS, the slimmest 26kW oil-fired condensing combi boiler on the market. At only 515mm wide, the XS is designed as a replacement for older inefficient standard efficiency oil-fired combis, which tend to be smaller in physical size. The Grant […]

  • Grant UK supports DIY SOS: The Big Build

    • If you watched the episode of DIY SOS: The Big Build, which aired on 17th June on BBC One, it is unlikely that you remained dry-eyed. The renovation of Liz and Jason Liversidge’s property in Hull not only transformed their home but it has also changed their way of life, […]

  • Small space? Big deal! Grant UK launches the Vortex Pro Combi XS

    • Leading heating specialist Grant UK has launched the Vortex Pro Combi XS, the slimmest 26kW oil-fired condensing combi boiler on the market. At only 515mm wide, the XS is designed as a replacement for older inefficient standard efficiency oil-fired combis, which tend to be smaller in physical size. The Grant […]

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