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


  • Grant pellet stores rolling off the production line

    • A biomass boiler is a great alternative to fossil fuel when it comes to reducing annual fuel bills. Now Grant UK has made it even easier to store the fuel used by its Spira condensing biomass boilers and reduce fuel costs even further by introducing the Grant Wood Pellet Store. […]

  • Grant Biomass & RHI tutorials on YouTube

    • We’ve just launched a full series of helpful biomass online videos – all of which are available to watch on our YouTube channel: www.youtube.com/user/mygrantuk There are five short technical step by step tutorials on the installation, servicing and commissioning of the Grant Spira: Grant Spira Boiler Overview Grant Spira Installation Training Grant Spira […]

  • Grant pellet stores rolling off the production line

    • A biomass boiler is a great alternative to fossil fuel when it comes to reducing annual fuel bills. Now Grant UK has made it even easier to store the fuel used by its Spira condensing biomass boilers and reduce fuel costs even further by introducing the Grant Wood Pellet Store. […]

  • Grant Biomass & RHI tutorials on YouTube

    • We’ve just launched a full series of helpful biomass online videos – all of which are available to watch on our YouTube channel: www.youtube.com/user/mygrantuk There are five short technical step by step tutorials on the installation, servicing and commissioning of the Grant Spira: Grant Spira Boiler Overview Grant Spira Installation Training Grant Spira […]

  • Grant pellet stores rolling off the production line

    • A biomass boiler is a great alternative to fossil fuel when it comes to reducing annual fuel bills. Now Grant UK has made it even easier to store the fuel used by its Spira condensing biomass boilers and reduce fuel costs even further by introducing the Grant Wood Pellet Store. […]

  • Grant Biomass & RHI tutorials on YouTube

    • We’ve just launched a full series of helpful biomass online videos – all of which are available to watch on our YouTube channel: www.youtube.com/user/mygrantuk There are five short technical step by step tutorials on the installation, servicing and commissioning of the Grant Spira: Grant Spira Boiler Overview Grant Spira Installation Training Grant Spira […]

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