The Grant Vortex: Dependable Efficiency with a Low-Carbon Future

For over four decades, Grant has led the way in designing reliable and efficient heating technologies for Irish homes. The Grant Vortex condensing boiler range continues to offer homeowners a trusted, high performance oil-fired system that’s also ready for the future with HVO (Hydrotreated Vegetable Oil) biofuel compatibility.

Proven Efficiency and Performance
The Grant Vortex condensing boiler range is available in 22 models with outputs from 15 – 70kW; the range includes a boiler house, outdoor, combi, and utility variants to suit a wide range of properties and installation types. Designed for energy efficiency, each unit converts water vapour condensation into heat. Condensing boilers are designed to recover more heat before it is lost and are great at recycling that heat to increase the temperature of the cool water that returns.

Every Vortex boiler combines the latest burner technology with SEAI HARP “A” rated efficiency. Each model is simple and quick to install, fully OFTEC-approved with EC directives, and features full front service access.

Ready for HVO Biofuel
Beyond its performance as a traditional oil-fired boiler, the Grant Vortex range is also HVO biofuel compatible. With minor burner adjustments carried out during a routine service, existing and new Vortex boilers can operate on this renewable liquid fuel.

HVO biofuel is a low-carbon liquid fuel made from renewable waste materials that can reduce carbon emissions by up to 88% compared with kerosene. For rural or off-grid homes where heat pump retrofitting can be costly, HVO offers an immediate, affordable route to decarbonisation.

Research from The Alliance for Zero Carbon Heating (TAZCH)* shows that adopting just a 20% renewable liquid fuel blend could achieve the same carbon savings as retrofitting 160,000 homes with heat pumps, without the disruption or infrastructure cost of deep retrofits.

Choice, Flexibility, and Future Readiness
For installers and merchants, the Vortex range offers choice and flexibility, from compact indoor units for smaller homes to external models that save interior space. Each boiler features a Riello RDB burner, multiple flueing options, and durable construction designed to meet the needs of today’s heating market.

By pairing traditional heating solutions with renewable readiness, Grant Vortex boilers deliver immediate efficiency whilst preparing homeowners for a lower-carbon future. For Ireland’s off-gas homes, it represents an affordable, scalable solution to decarbonisation, helping customers transition at their own pace.

Visit www.grant.ie for more information on the Grant Vortex range and HVO biofuel compatibility.

Follow Grant on Facebook @GrantIRL, X and Instagram @grant_irl, and LinkedIn @GrantEngineeringULC.

*Stat from recent research by The Alliance for Zero Carbon Heating (TAZCH) in Ireland.