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


  • Vortex Combi upgrade saves installers time and money

    • Following valuable feedback from G-One installers and the training academy, Grant UK has made some innovative upgrades to the Combi models within its successful Vortex range. Most oil-fired combination boilers are supplied with a 12 litre expansion vessel and it’s the installer’s responsibility to provide any additional expansion for the […]

  • New display vans hit the road

    • Grant UK has taken delivery of two bespoke display vans, fully kitted out with its oil, biomass, solar and air source heat pump products. The vehicles will be touring throughout 2015 visiting merchants, trade exhibitions and country shows. The eye-catching vehicles feature a Grant Spira condensing biomass boiler, the new […]

  • Vortex Combi upgrade saves installers time and money

    • Following valuable feedback from G-One installers and the training academy, Grant UK has made some innovative upgrades to the Combi models within its successful Vortex range. Most oil-fired combination boilers are supplied with a 12 litre expansion vessel and it’s the installer’s responsibility to provide any additional expansion for the […]

  • New display vans hit the road

    • Grant UK has taken delivery of two bespoke display vans, fully kitted out with its oil, biomass, solar and air source heat pump products. The vehicles will be touring throughout 2015 visiting merchants, trade exhibitions and country shows. The eye-catching vehicles feature a Grant Spira condensing biomass boiler, the new […]

  • Vortex Combi upgrade saves installers time and money

    • Following valuable feedback from G-One installers and the training academy, Grant UK has made some innovative upgrades to the Combi models within its successful Vortex range. Most oil-fired combination boilers are supplied with a 12 litre expansion vessel and it’s the installer’s responsibility to provide any additional expansion for the […]

  • New display vans hit the road

    • Grant UK has taken delivery of two bespoke display vans, fully kitted out with its oil, biomass, solar and air source heat pump products. The vehicles will be touring throughout 2015 visiting merchants, trade exhibitions and country shows. The eye-catching vehicles feature a Grant Spira condensing biomass boiler, the new […]

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