Head to head
Samsung EHS Mono HT Quiet 12.0kW vs Viessmann Vitocal 150-A10
The Samsung EHS Mono HT Quiet 12.0kW is a r32 monobloc air source heat pump, 12.0 kw heat output. The Viessmann Vitocal 150-A10 is a r290 air source heat pump, 7.3 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| Samsung EHS Mono HT Quiet 12.0kW | Viessmann Vitocal 150-A10 | |
|---|---|---|
| Heat output | 12.0 kW | 7.3 kW at A7/W35 |
| Refrigerant | R32, 3.3 kg charge | R290 (propane), GWP 0.02 |
| Dimensions | 1018 x 1270 x 530 mm (H x W x D) | 920 x 450 x 360 mm (H x W x D) (indoor unit); 841 x 1144 x 600 mm (H x W x D, single fan) (outdoor unit) |
| Weight | 137 kg | 162 kg (single fan) (outdoor unit) |
| Max flow temperature | 70C | 70C down to -10C outdoor |
| SCOP | 4.90 (35C flow), 3.78 (55C flow) | - |
| Sound pressure | 46 dB(A) standard, 35 dB(A) night mode | - |
| COP | - | 4.7-5.0 at A7/W35 |
| Sound power | - | 51 dB(A) assessed total at A7/W55 |
Sources: Samsung EHS Mono HT Quiet 12.0kW, Viessmann Vitocal 150-A10. 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 Vitocal 150-A10 if...
A Vitocal 150-A monobloc-style split heat pump using the natural refrigerant R290, rated at 7.3kW and reaching a 70C flow for boiler-replacement work. Viessmann-trained installers can extend the standard warranty on registration.
Full Vitocal 150-A10 specifications →Common questions
What is the difference between the Samsung EHS Mono HT Quiet 12.0kW and the Viessmann Vitocal 150-A10?
The Samsung EHS Mono HT Quiet 12.0kW is a r32 monobloc air source heat pump, 12.0 kW heat output; the Viessmann Vitocal 150-A10 is a r290 air source heat pump, 7.3 kW heat output.
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