Best Small Heat Pumps (3–6 kW) by SCOP (2026)
Top 10 of 185 qualifying products · updated 2026-10-13
Small-capacity heat pumps (3–6 kW) suit well-insulated flats and smaller homes. Ranked by SCOP — seasonal efficiency at 35°C flow.
Every figure comes from the manufacturer’s published specification as recorded in the Heat Pump Database; near-identical variants (e.g. single- and three-phase versions with the same result) are shown once. The list updates automatically as new products are added.
| # | Model | Capacity | SCOP | Refrigerant | Noise |
|---|---|---|---|---|---|
| 1 |  Acond Grandis-N | 3.54 kW | 5.38 | R290 | 46.1 dB(A) |
| 2 |  Nibe S2125 | 4.72 kW | 5.33 | R290 | 49 dB(A) |
| 3 |  SolarEast BLN Series | 6 kW | 5.31 | R290 | 49 dB(A) |
| 4 |  SolaX Alture Series | 4.65 kW | 5.25 | R290 | 48 dB(A) |
| 5 |  AXEN R290 Hydro Split Set | 4 kW | 5.25 | R290 | |
| 6 |  Haier HPM 6kW | 6 kW | 5.21 | R290 | 50 dB(A) |
| 7 | SolarEast BLN Series | 4.5 kW | 5.21 | R290 | 50 dB(A) |
| 8 |  Rhoss Electa-PI THAITP 106M | 6.1 kW | 5.18 | R290 | |
| 9 | Rhoss Electa-PI THAITP 104M | 4.5 kW | 5.13 | R290 | |
| 10 |  Panasonic Aquarea J Series | 5 kW | 5.12 | R32 | 59 dB(A) |