Grant Aerona3 R32 10kW air to water air source heat pump.

Designed with both the property developer, architect and homeowner in mind, Grant’s innovative heating technologies work together seamlessly. This means that those working on new build properties can save time on the project by having the full heating system designed and specified under one roof, using the best suited products which result in a highly efficient, compliant heating system.

Grant Engineering

It is this technical insight and careful combination of heating technologies from Grant’s diverse product portfolio which provides a bespoke integrated heating solution to the property. The most common main heat source featured in Grant’s Integrated Heating Packages is the A+++ Aerona3  R32 air to water air source heat pump.

Available in four outputs of 6kW, 10kW, 13kW and 17kW, Grant’s Aerona3  R32 air to water air source heat pump offers a sustainable form of heating. The Aerona3  has quickly become a popular choice amongst those working in the trade due to its cleaner, more environmentally friendly performance, and its ability to lower a property’s overall carbon footprint, which will ultimately help to achieve NZEB building standards.

Grant Uflex underfloor heating and screed.

Units within the range have achieved an A+++ energy rating at low temperatures such as 35°C or 45°C, which continues to highlight Grant’s commitment to providing market-leading heating solutions. All four models also boast superior seasonal coefficient of performance (SCOP) and depending on climate conditions and demand on the heating system at the time, can deliver 4kW of heat energy for every 1kW of electricity used. The 13kW and 17kW models within the range have also been recognised by international award programme Quiet Mark for their low noise qualities.

The Aerona3  R32 heat pump’s ability to work in tandem with other Grant heating technologies adds to its popularity. In particular, the Aerona3  works well when combined with Grant’s Uflex underfloor heating system as both technologies can run at lower temperatures, therefore providing significant carbon and financial savings for the property owner.


An ideal heating solution for new builds, Grant’s Uflex underfloor heating system offers convenient and highly efficient heating. This unobtrusive heat source is embedded within the floor construction and is fitted as part as the floor’s assembly process therefore causing no delays in construction. The pipework is available in PERT and ALUPERT and is positioned and clipped into place using Grant’s tracking and staple system once the flooring’s insulation and membrane has been fitted. After this a flow screed is laid over the top and allowed to fully dry before heat is introduced. As the system is designed for continuous operation with heat being supplied through the screed all day, this also means that the screed acts as a thermal store.

To avail of a fully integrated heating system the main heat source and heat emitters must then be complemented with hot water storage, like the Grant Integrated Unit. The popular space saving Integrated Unit has been developed to work together with the Grant Aerona3  R32 air to water air source heat pump range. Standing at 1.8 metres high with a footprint of 625 x 595mm, the unit can be installed neatly within domestic spaces of a property to ensure an optimum efficiency, complete heating solution.

The pre-plumbed and pre-wired unit also features aesthetically pleasing white panelling and is therefore easily incorporated into the design of most modern homes, with the system controls and display highly accessible if required.

The technical specialists at Grant can design and specify the full heating solution for a property, free of charge, on receipt of house plans, as part of its home heating design offering. For further information on Grant’s home heating design service email house plans, a contact number and preference of heat emitters to

Visit for more information on Grant’s range of innovative heating solutions. Follow Grant on Facebook and Twitter @GrantIRL or Instagram @Grant_ IRL.

Think Heating. Think Grant.

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