Grant Aerona³

Air Source Heat Pump Range

Highly efficient air to water heat pumps, featuring weather compensation and inverter driven. For a sustainable heating alternative, the Grant Aerona range delivers exceptional performance, reliability and value.

Aerona Heat Pump

This new range is an innovative inverter driven air to water unit that is designed to maintain a reliable and consistent heat ouput, even at low outdoor temperatures. The renewable benefits of the Aerona can also help homeowners achieve Part L compliance as outlined in building regulations.  With outputs of 6kW, 10kW and 16kW, the Grant Aerona³ is compact in size and combines clever design features such as weather compensation controls and a base tray heating element to stop ice formation in cold weather conditions. The units are incredibly efficient and have an ErP rating of A++ for heating across the range.

The Grant Aerona³ heat pump units will suit homes which want to incorporate renewable technologies when space is at a premium. As with all Grant products, the Aerona³ is geared towards easy installation and maintenance for both installers and homeowners.

Seasonal Coefficient of Performance (SCOP)

The Aerona³ inverter driven heat pumps have a superior SCOP even when external temperatures drop as low -20°C. The SCOP is the overall performance of the heat pump when used in a designated heating season (warm, average or cold), calculated as the reference annual heating demand divided by the annual energy consumed. Testing is carried out to European and British Standard BS EN 14825 establishing the seasonal space heating energy efficiency and SCOP at various ambient temperatures and system flow temperatures.

For example, the Grant Aerona³ HPID6 model produces 6kW at a SCOP of over 4 when tested at low temperature and average climate conditions. This means, for every kilowatt (kW) of energy used to run the Aerona³, over 4kW of energy is being given to the heating system in return.

It is important to note that as the outside air gets colder, the output and therefore the SCOP of an air source heat pump fails slightly due to the reduced amount of heat energy in the air. Consequently, the output from the Aerona³ will modulate down or up depending on the climate conditions and the demand on the heating system, giving the homeowner peace of mind that their heat pump is working as efficiently as possible every day of the year.

  • Inverter driven
  • 6kW-16kW heat output
  • High COP’s sustainable at low temperatures
  • Compact size
  • Single phase
  • Simple plumbing and electrical connections
  • Factory fitted weather compensation control
  • Base tray heating element
Installation & Commissioning:

The installation of a Grant Aerona3 heat pump should be carried out by a Grant trained installer.

Servicing should be carried out annually by a qualified heating engineer. During servicing it is important for the engineer to ensure that the evaporator matrix is clear of debris as any build up could significantly affect the performance of the heat pump.

Installer Guide

Product Information

HPID6 GRANT Aerona³ 6kW Inverter Driven Air Source Heat Pump 53 675 825 300 4.34 3.15 A++ Download Download
HPID10 GRANT Aerona³ 10kW Inverter Driven Air Source Heat Pump 75 882 850 330 4.35 3.15 A++ Download Download
HPID16 GRANT Aerona³ 16kW Inverter Driven Air Source Heat Pump 121 1418 1000 330 4.19 3.15 A++ Download Download

Find the right Heat Pump for you

If you are considering installing a Grant Aerona3 ASHP/VortexAir oil hybrid, email the plans and xml file of the project through to We will then let you know which model would best suit the project. This service is free of charge.


Grant Engineering Ireland ULC guarantees the manufacture of the Aerona³ air source heat pump (including all electrical and mechanical components) for a period of five years, provided that the air source heat pump has been installed in full accordance with the installation and servicing instructions issued.

The heat pump must be serviced annually. The guarantee is two years parts and labour, with the following 3 years parts only.

The installer of the air source heat pump must have attended the product training course in Grant Engineering.

After sales service

For peace of mind, all Grant Aerona3 heat pumps are backed by Grant’s comprehensive service operation and in the unlikely event of a problem occurring, your installer should telephone our Customer Service Department on: +353 (0)579120089