Grant Engineering
Grant Aerona 290 4kW R290 Air Source Heat Pump
Grant Aerona 290 4kW R290 Air Source Heat Pump
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The Grant Aerona 290 4kW R290 Air Source Heat Pump (HPR2904) is Grant's fifth-generation inverter-driven air-to-water heat pump, engineered for exceptional efficiency and ultra-low noise operation. Using the natural refrigerant R290 — which carries a Global Warming Potential (GWP) of just 3 — this monobloc unit delivers outstanding seasonal performance and is fully eligible for the UK Government's Boiler Upgrade Scheme (BUS) grant.
Designed with installers in mind, the Aerona 290 features a built-in PWM circulating pump, factory-fitted automatic air vent, and a 3-bar pressure relief valve, making commissioning fast and straightforward. Compatible with the Grant Aerona Smart Controller for remote monitoring, weather compensation, and load compensation.
Key Features
- Natural R290 refrigerant — GWP of just 3, zero ODP
- MCS accredited and BUS grant eligible (up to £7,500)
- Quiet Mark accredited — ultra-low noise at 37.0 dB(A) at 1m
- A+++ ErP energy rating at 35°C water temperature
- 7-year guarantee available via G1 trained installers
- Operating range: -25°C to +35°C ambient air temperature
- Maximum flow temperature: 75°C
- Built-in refrigerant leak sensor and independent ventilation channels
- Anti-freeze protection heater on plate heat exchanger and base tray
- Connect and Notify approved
Technical Specifications
| Product Code | HPR2904 |
| Heating Output | 4kW (rated at -5°C air / 55°C water) |
| Capacity at 7°C / 35°C water | 4.09kW |
| Capacity at 7°C / 55°C water | 4.10kW |
| SCOP at 35°C water | 5.00 |
| SCOP at 55°C water | 3.66 |
| ErP Rating (35°C water) | A+++ |
| ErP Rating (55°C water) | A++ |
| Refrigerant | R290 (Propane, GWP = 3) |
| Operating Voltage | 230V / 1 Phase |
| Max Running Current | 8.3A |
| Flow & Return Connections | 1" BSP Male |
| Operating Temperature Range | -25°C to +35°C |
| Maximum Flow Temperature | 75°C |
| Sound Power Level | 48 dB(A) |
| Sound Pressure Level at 1m | 37.0 dB(A) |
| Dimensions (H × W × D) | 803mm × 1155mm × 422mm |
| Weight | 99kg |
| Warranty | 7 Years (G1 Installer) / 5 Years (standard) |
Boiler Upgrade Scheme (BUS)
This heat pump is MCS accredited and fully eligible for the UK Government's Boiler Upgrade Scheme, providing a grant of up to £7,500 towards installation costs. Contact Magna Renewables to find out more.
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