Head to head
Grant Aerona3 R32 6kW vs Samsung EHS Mono HT Quiet 12.0kW
The Grant Aerona3 R32 6kW is a r32 inverter driven air source heat pump, 6 kw heat output. The Samsung EHS Mono HT Quiet 12.0kW is a r32 monobloc air source heat pump, 12.0 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Grant Aerona3 R32 6kW | Samsung EHS Mono HT Quiet 12.0kW | |
|---|---|---|
| Heat output | 6 kW | 12.0 kW |
| SCOP | 4.61 (35C flow), 3.29 (55C flow) | 4.90 (35C flow), 3.78 (55C flow) |
| Refrigerant | R32 | R32, 3.3 kg charge |
| Dimensions | 675 x 898 x 379.4 mm (H x W x D) | 1018 x 1270 x 530 mm (H x W x D) |
| Weight | 51 kg | 137 kg |
| Warranty | 7 years when installed by a Grant G1 accredited installer | - |
| Sound pressure | - | 46 dB(A) standard, 35 dB(A) night mode |
| Max flow temperature | - | 70C |
Sources: Grant Aerona3 R32 6kW, Samsung EHS Mono HT Quiet 12.0kW. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Aerona3 R32 6kW if...
A 6kW R32 inverter driven heat pump from Grant's Aerona3 range, a common choice for off-gas-grid homes that previously ran an oil boiler. It carries a 7 year warranty through Grant's G1 installer scheme, one of the longer standard terms in this category.
Full Aerona3 R32 6kW specifications →Buy or hire the EHS Mono HT Quiet 12.0kW if...
A 12.0kW unit for a larger house, with the highest SCOP quoted across the EHS Mono HT Quiet range at 4.90 on a 35C flow. It shares the same cabinet size as the 8kW model but weighs 11 kg more for the larger compressor.
Full EHS Mono HT Quiet 12.0kW specifications →Common questions
What is the difference between the Grant Aerona3 R32 6kW and the Samsung EHS Mono HT Quiet 12.0kW?
The Grant Aerona3 R32 6kW is a r32 inverter driven air source heat pump, 6 kW heat output; the Samsung EHS Mono HT Quiet 12.0kW is a r32 monobloc air source heat pump, 12.0 kW heat output.
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