Head to head
NIBE S2125 Model 8 vs Samsung EHS Mono HT Quiet 8.0kW
The NIBE S2125 Model 8 is a air/water heat pump, up to 5.4 kw heat output. The Samsung EHS Mono HT Quiet 8.0kW is a r32 monobloc air source heat pump, 8.0 kw heat output.
Last reviewed 13 September 2026
Specifications side by side
| NIBE S2125 Model 8 | Samsung EHS Mono HT Quiet 8.0kW | |
|---|---|---|
| Heat output | 5.33 kW (average climate), 5.4 kW (cold climate) | 8.0 kW |
| SCOP | 5.0 at 35C, 3.7 at 55C (average climate); 4.1 at 35C, 3.2 at 55C (cold climate) | 4.64 (35C flow), 3.38 (55C flow) |
| Dimensions | 1070 x 1130 x 820 mm (H x W x D) | 1018 x 1270 x 530 mm (H x W x D) |
| Weight | 150 kg | 126 kg |
| Max flow temperature | up to 75C | 70C |
| Sound power | 49 dB(A) at nominal rating (EN12102) | - |
| Refrigerant | - | R32, 2.7 kg charge |
| Sound pressure | - | 42 dB(A) standard, 35 dB(A) night mode |
Sources: NIBE S2125 Model 8, Samsung EHS Mono HT Quiet 8.0kW. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the S2125 Model 8 if...
A smaller NIBE S2125 rated to keep working in cold climates, reaching up to 65C flow even at -25C outdoors. It suits a smaller house where cold-weather reliability matters more than raw output.
Full S2125 Model 8 specifications →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 →Common questions
What is the difference between the NIBE S2125 Model 8 and the Samsung EHS Mono HT Quiet 8.0kW?
The NIBE S2125 Model 8 is a air/water heat pump, up to 5.4 kW heat output; the Samsung EHS Mono HT Quiet 8.0kW is a r32 monobloc air source heat pump, 8.0 kW heat output.
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