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 local Youth Football Tournament

    • The weekend of the 16th and 17th May was a busy one for some football loving youngsters in Wiltshire. Only a short drive from Grant UK’s headquarters in Devizes, FC Chippenham hosted a leg of its annual Festival of Football last weekend which invites children of all ages (up to […]

  • G-One installer named Fastest Growth Company 2015

    • One of Grant’s G-One approved installers was recently named Fasted Growth Company 2015 at the prestigious Business Excellence Awards last month. Horizon Renewable Energy Ltd are based in Lanarkshire and install Grant products throughout Scotland. They have already registered no less than fifteen Spira biomass installations so far this year, […]

  • Grant Vecta wins top prize at SEAI Energy Show 2015

    •   Following in the footsteps of Grant’s acclaimed ‘Spira’ condensing wood pellet boiler, the new Vecta condensing wood pellet boiler has been awarded two prestigious titles of Best Renewable Product of Overall Product and Overall Product of the Show at the 2015 Sustainable Energy Authority of Ireland (SEAI) Energy Show […]

  • Grant Biomass Forum is Now Live!

    • Our new biomass forum is finally up and running fully! We found that there was a real lack of easily-accessible information about biomass boilers and systems online, and not everyone wants to go through product manuals they don’t know much about! This was what inspired us to create the Biomass […]

  • G-One installer named Fastest Growth Company 2015

    • One of Grant’s G-One approved installers was recently named Fasted Growth Company 2015 at the prestigious Business Excellence Awards last month. Horizon Renewable Energy Ltd are based in Lanarkshire and install Grant products throughout Scotland. They have already registered no less than fifteen Spira biomass installations so far this year, […]

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