Head to head
Samsung EHS Mono HT Quiet 12.0kW vs Worcester Bosch Greenstar 5800i AW 7kW
The Samsung EHS Mono HT Quiet 12.0kW is a r32 monobloc air source heat pump, 12.0 kw heat output. The Worcester Bosch Greenstar 5800i AW 7kW is a r290 monobloc air source heat pump, 7.97 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Samsung EHS Mono HT Quiet 12.0kW | Worcester Bosch Greenstar 5800i AW 7kW | |
|---|---|---|
| Heat output | 12.0 kW | 7.97 kW at 7/35C |
| SCOP | 4.90 (35C flow), 3.78 (55C flow) | 4.54 (MCS, 35C flow) |
| Refrigerant | R32, 3.3 kg charge | R290 (propane) |
| Sound pressure | 46 dB(A) standard, 35 dB(A) night mode | 42 dB(A) |
| Dimensions | 1018 x 1270 x 530 mm (H x W x D) | 800 x 1100 x 540 mm (H x W x D) |
| Weight | 137 kg | 143 kg |
| Max flow temperature | 70C | 75C |
Sources: Samsung EHS Mono HT Quiet 12.0kW, Worcester Bosch Greenstar 5800i AW 7kW. Figures vary by model year and options, so check with the supplier before you commit.
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 →Buy or hire the Greenstar 5800i AW 7kW if...
The larger 5800i AW unit, for a slightly bigger house than the 5kW model while sharing the same cabinet size and 42 dB(A) sound rating. Its R290 refrigerant and 75C flow temperature suit a radiator-based retrofit.
Full Greenstar 5800i AW 7kW specifications →Common questions
What is the difference between the Samsung EHS Mono HT Quiet 12.0kW and the Worcester Bosch Greenstar 5800i AW 7kW?
The Samsung EHS Mono HT Quiet 12.0kW is a r32 monobloc air source heat pump, 12.0 kW heat output; the Worcester Bosch Greenstar 5800i AW 7kW is a r290 monobloc air source heat pump, 7.97 kW heat output.
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