Head to head
Samsung EHS Mono HT Quiet 8.0kW vs Worcester Bosch Greenstar 5800i AW 5kW
The Samsung EHS Mono HT Quiet 8.0kW is a r32 monobloc air source heat pump, 8.0 kw heat output. The Worcester Bosch Greenstar 5800i AW 5kW is a r290 monobloc air source heat pump, 6.80 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Samsung EHS Mono HT Quiet 8.0kW | Worcester Bosch Greenstar 5800i AW 5kW | |
|---|---|---|
| Heat output | 8.0 kW | 6.80 kW at 7/35C |
| SCOP | 4.64 (35C flow), 3.38 (55C flow) | 4.53 (MCS, 35C flow) |
| Refrigerant | R32, 2.7 kg charge | R290 (propane) |
| Sound pressure | 42 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 | 126 kg | 143 kg |
| Max flow temperature | 70C | 75C |
Sources: Samsung EHS Mono HT Quiet 8.0kW, Worcester Bosch Greenstar 5800i AW 5kW. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the EHS Mono HT Quiet 8.0kW if...
An 8.0kW R32 monobloc heat pump sized for a small to medium house, reaching a 70C flow for radiator retrofits. A night mode sound setting brings it down to 35 dB(A), which suits a property with a neighbouring wall close to the outdoor unit.
Full EHS Mono HT Quiet 8.0kW specifications →Buy or hire the Greenstar 5800i AW 5kW if...
Worcester Bosch's entry-size 5800i AW, using the natural refrigerant R290 and reaching a 75C flow temperature for existing radiator systems. It is marketed as one of the quieter units in this size at 42 dB(A) sound pressure.
Full Greenstar 5800i AW 5kW specifications →Common questions
What is the difference between the Samsung EHS Mono HT Quiet 8.0kW and the Worcester Bosch Greenstar 5800i AW 5kW?
The Samsung EHS Mono HT Quiet 8.0kW is a r32 monobloc air source heat pump, 8.0 kW heat output; the Worcester Bosch Greenstar 5800i AW 5kW is a r290 monobloc air source heat pump, 6.80 kW heat output.
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