Products

Oil Boilers

Award winning Grant Vortex condensing boiler range, available in outputs from 12-70kW. Endorsed by the Energy Savings Trust, the appliances are currently some of the most efficient oil-fired boilers on the market.

Vortex Blue: Internal

Vortex Blue: Internal

  • Award winning range
  • Outputs of 15-21, 21-26 and 26-36kW
  • 90.7 - 93.3% Gross SAP2009 annual efficiency
View models
Vortex Pro: Internal

Vortex Pro: Internal

  • Award winning range
  • Outputs ranging from 15-70kW
  • 90.7- 93.3% Gross SAP2009 annual efficiency
View models
Vortex Blue: External

Vortex Blue: External

  • Award winning range
  • Outputs of 15-21, 21-26 and 26-36kW
  • 90.7- 93.3% Gross SAP2009 annual efficiency
View models
Vortex Pro: External

Vortex Pro: External

  • Award winning range
  • Outputs ranging from 15-70kW
  • 90.7- 93.3% Gross SAP2009 annual efficiency
View models
Vortex Blue: Internal Combi

Vortex Blue: Internal Combi

  • Award winning range
  • Outputs of 21, 26 and 36kW
  • 89.5- 91.6% Gross SAP2009 annual efficiency
View models
Vortex Pro: Internal Combi

Vortex Pro: Internal Combi

  • Award winning range
  • Outputs of 21, 26 and 36kW
  • 89.5- 91.6% Gross SAP2009 annual efficiency
View models
Vortex Blue: External Combi

Vortex Blue: External Combi

  • Award winning range
  • Outputs of 21, 26 and 36kW
  • 89.5- 91.6% Gross SAP2009 annual efficiency
View models
Vortex Pro: External Combi

Vortex Pro: External Combi

  • Award winning range
  • Outputs of 21, 26 and 36kW
  • 89.5- 91.6% Gross SAP2009 annual efficiency
View models
Vortex Boiler House

Vortex Boiler House

  • Award winning product range
  • Outputs ranging from 15–70kW
  • 90.7 – 93.3% Gross SAP2009 annual efficiency
View models
Vortex Eco: Internal Wall Hung

Vortex Eco: Internal Wall Hung

  • Award winning range
  • Outputs ranging from 12–21kW
  • 91.6 – 91.9% Gross SAP2009 annual efficiency
View models
Vortex Eco: External Wall Hung

Vortex Eco: External Wall Hung

  • Award winning range
  • Outputs ranging from 12–21kW
  • 91.6 – 91.9% Gross SAP2009 annual efficiency
View models
Vortex Eco: Internal

Vortex Eco: Internal

  • Award winning range
  • Outputs ranging from 15–35kW
  • 90.3 – 90.8% Gross SAP2009 annual efficiency
View models
Vortex Eco: External

Vortex Eco: External

  • Award winning range
  • Outputs ranging from 15–35kW
  • 90.3 – 90.8% Gross SAP2009 annual efficiency
View models

Are you looking for Flues?

View Flues

Find an engineer

Search our extensive engineer network and locate a technician in your area

Find a merchant

Use our national merchant search to find a Grant supplier near you

Why upgrade to a Grant oil-fired boiler?

For the past 40 years Grant has developed some of the most innovative and efficient oil-fired boilers in the UK and Ireland.  Utilising our patented Vortex stainless steel secondary heat exchanger, Grant boilers are designed and manufactured to the highest standards so you can be confident in their durability and efficiency.  We believe in simplicity, and while our technology is advanced, our boilers are low maintenance and easy to install. And with over 60 models and hundreds of different EZ-Fit flue combinations there's sure to be a solution that's right for you.

Compare products
/3