Grant Aerona3 Air Source Heat Pump Cost in Northern Ireland
£8,000 to £13,000 installed in Northern Ireland, where there is no heat pump grant; 0% VAT applies until 31 March 2027.
Prices are PumpSwap's indicative figures for Grant Aerona3, not quotes. No heat pump grant in Northern Ireland.
Grant, which also makes oil boilers, sells the Aerona3 R32 monobloc through its network of Grant-trained G1 installers. The 10 kW model has a certified SCOP of 5.2 at 35°C (MCS) and is rated to work down to -20°C. Off-gas homes in England and Wales replacing oil or LPG heating can get £9,000 off until 31 March 2027.
Grant Aerona3 models and running costs in Northern Ireland
Running costs for 10,000 kWh of heat a year at 34.15p per kWh (Power NI standard tariff including VAT, from 1 July 2026), at a 45°C design flow temperature: the midpoint of each model's MCS-certified 35°C and 55°C SCOPs.
| Model | Size | SCOP 35°C / 55°C | Installed | Running cost a year |
|---|---|---|---|---|
| Aerona3 R32 10kW rural 3-4 bed homes replacing oil | 10 kW | 5.2 / 3.47 | £8,500 to £13,000 | £785 |
Pros
- Certified SCOP of 5.2 at 35°C (MCS)
- Compact and light (70 kg)
- 7-year warranty through a G1 installer
- Rated to work down to -20°C
Cons
- High sound power (64 dB(A)), so siting matters
- Maximum flow temperature 60°C, lower than R290 units
- Standard warranty only 12 months unless registered
Best for: Off-gas homes replacing oil or LPG heating, where the £9,000 grant can apply in England and Wales. Warranty: 1 year, up to 7 with conditions.
What Northern Ireland means for your heat pump
- Climate. January averages 7.2°C by day and 1.7°C at night, with 41 days of air frost a year (Met Office 1991-2020; UK 1.2°C and 53 days). The heat loss survey sizes the unit for your local design temperature.
- Heating fuel. 49.5% of Northern Ireland households heat with oil alone, against 31.58% on mains gas alone.
- Grant. No heat pump grant in Northern Ireland.
Full detail for the region, including planning rules and running costs against gas: air source heat pump cost in Northern Ireland.
Grant Aerona3 prices in towns across Northern Ireland
Other brands in Northern Ireland
Grant Aerona3 in other regions: London, South East England, South West England, East of England, East Midlands, West Midlands, Yorkshire and the Humber, North West England, North East England, Scotland, Wales.
Frequently asked questions
How much does a Grant Aerona3 heat pump cost in Northern Ireland?
£8,000 to £13,000 installed. There is no heat pump grant in Northern Ireland, so that is what you pay; 0% VAT applies until 31 March 2027. These are PumpSwap's indicative 2026 prices.
Can I get the grant on a Grant Aerona3 heat pump in Northern Ireland?
There is no heat pump grant for homeowners in Northern Ireland, whichever brand you choose. The 0% VAT relief on the installation still applies.
What would a Grant Aerona3 heat pump cost to run in Northern Ireland?
Roughly £785 a year for the Aerona3 R32 10kW to deliver 10,000 kWh of heat at 34.15p per kWh (Power NI standard tariff including VAT, from 1 July 2026). That assumes a 45°C design flow temperature, estimated from its MCS-certified SCOPs of 5.2 at 35°C and 3.47 at 55°C. A lower flow temperature, with bigger radiators or underfloor heating, costs less to run.
Who installs Grant Aerona3 heat pumps in Northern Ireland?
MCS-certified installers across Northern Ireland fit Grant Aerona3. Ask for a heat loss survey and compare two or three quotes on the same basis: unit size, cylinder, radiator changes and warranty.
Heat pump guides for Northern Ireland
Prices, models, efficiency and warranties are indicative and change; confirm with your MCS-certified installer. Climate: Met Office 1991-2020 averages. Energy prices: Power NI standard tariff including VAT, from 1 July 2026.
Where are you?
See indicative costs and local installers for your area