Unlock the benefits of renewable energy in off-gas areas with the new Grant VortexAir.

Why join the hybrid revolution?

Each year, thousands of older oil boilers are changed, most often as distress purchases and requiring a quick replacement heating solution. In these situations, there is often very little opportunity to choose an alternative fuel source, such as a renewable technology, as the work involved in updating the system would leave the property without heating for an extended period of term. Consequently, a different approach to resolving this problem is therefore required – for example, a hybrid.

The revolutionary new VortexAir has been developed by Grant’s R&D Team and combines a Grant VortexBlue condensing oil-fired boiler, featuring the latest blue flame burner technology, with a new Aerona³ inverter driven air source heat pump. This innovation combines two of the most cost effective forms of fuel – oil and renewables – ensuring that they are never without heat and fuel bills are kept to a minimum.

The Grant VortexAir joins the benefits of an air source heat pump with the latest blue flame oil boiler technology, offering homeowners the best of both worlds.

Seamless Changeover

If a householder already has an oil boiler and is thinking of changing to a heat pump, the VortexAir allows them to make the change seamlessly without the added cost of having to resize and replace radiators, or possibly being without heating while the heat pump is being installed. The VortexAir’s unique arrangement allows the oil boiler to be installed first (either internally or externally) as a stand-alone unit replacing an older oil-fired appliance and providing the household with immediate heat and hot water. The heat pump is then installed externally (either joining the externally located oil boiler and creating a single unit, or being located outside of the building where the boiler is located inside), completing this two-stage installation with minimum disruption to the home.

Benefits of an Air Source Heat Pump

With the recent fluctuations in price and supply of fossil fuels, air source heat pumps offer both an environmentally and economically sustainable alternative. The heat source used by Grant Aerona³ heat pumps is entirely renewable which helps reduce the amount of harmful greenhouse gases being released into the atmosphere and, in doing so, lowers the carbon footprint of the home.

Blue Flame Oil Boiler Technology

The Grant Vortex oil-fired boiler is renowned for its high efficiency and reliability, making it the perfect back-up heat source. The VortexBlue boiler models incorporate the latest blue flame technology, a Riello RDB Blu burner with low NOx emissions, and are leading the way in oil heating appliances. This is the reason why Grant have combined this appliance with an Aerona³ to create the VortexAir.


The Grant VortexAir is guaranteed for one year from the date of installation of the Hybrid’s oil boiler, unless the installation is more than six months from the date of purchase in which case the guarantee period will commence six months from the date of purchase. The guarantee period will be extended to a total of two years (excluding consumable items) if the product is registered within 30 days from installation of the Hybrid’s oil boiler, subject to being serviced annually and installed in accordance with the manufacturer’s instructions. On completion of the installation, the VortexAir Hybrid must be commissioned and the online guarantee registration submitted to Grant Engineering (UK) Ltd.



Case Studies

Dual fuel is twice as good

A large residence in Norfolk converts from a standard oil fired system to a renewable biomass boiler and condensing oil boiler combination, reaping the benefits of both high product efficiency and low running costs. This beautiful 19th century, six bedroomed residence on the Norfolk Broads has undergone a complete heatingRead More

Grant renewables installed in hostel for homeless

  The Battery Street Hostel for Signpost Housing is a 46-bed homeless hostel situated in the Stonehouse area of Plymouth, built to provide housing for some of the city’s most vulnerable people.  Completed in July 2011 and located just off Union Street, the building replaced the Ship Hostel, which didn’tRead More

19th century cottage now being heated by a Vortex Pro boiler

A cottage that was originally built in 1850 in a small Wiltshire village is now being kept warm by a Grant Vortex Pro 15-21kW kitchen/utility oil-fired boiler. Replacing an appliance that was over fifteen years old, the new Vortex now installed is providing reliable heating to the property, efficiently andRead More

Colchester United has gone to the green side with a 72kW Spira

The Florence Park training ground of Colchester United Football Club is now being kept warm by a Grant Spira biomass boiler. The heating system at the premises was previously fuelled by LPG so, since the installation of the 72kW Spira, the club is now benefitting from cheaper fuel costs andRead More

Grant Spira biomass boiler cuts fuel bills

A homeowner in Norfolk has noticed an immediate drop in fuel costs following the installation of a 26kW Grant Spira Wood Pellet Boiler by MCS Approved Green Home Energy Solutions. The Spira Wood Pellet biomass Boiler, which replaces an eighteen year old oil fired boiler, will provide heating and hotRead More