Heat PumpDatabase

Best Small Heat Pumps (3–6 kW) by SCOP

Top 20 of 113 qualifying products · updated 2026-07-29

Small-capacity heat pumps (3–6 kW) suit well-insulated flats and smaller homes. Ranked by SCOP — seasonal efficiency at 35°C flow.

#ModelCapacitySCOPRefrigerantNoise
1Acond Grandis-N3.54 kW5.38R29046.1 dB(A)
2Nibe S21254.72 kW5.33R29049 dB(A)
3Haier HPM 6kW6 kW5.21R29050 dB(A)
4Rhoss Electa-PI THAITP 106M6.1 kW5.18R290
5Rhoss Electa-PI THAITP 104M4.5 kW5.13R290
6Panasonic Aquarea J Series5 kW5.12R3259 dB(A)
7Panasonic Aquarea All in One K Series5 kW5.12R3255 dB(A)
8Thermia iTec XTR1–5 kW5.1R29075 dB(A)
9Haier Hydro Split R2904 kW5.1R29055 dB(A)
10Haier Monobloc GT R2904 kW5.1R29055 dB(A)
11Ochsner AIR MILAN 307 C11B CM15.8 kW5.1R29055 dB(A)
12Nibe F20505.55 kW5.08R3253 dB(A)
13Ideal Heating Logic Air 5kW5 kW5.07R3252 dB(A)
14Ideal Heating HP290 4.5kW4.6 kW5.07R29056 dB(A)
15Midea M Thermal R2904.4 kW5.07R29056 dB(A)
16Panasonic Aquarea All in One K Series3.2 kW5.07R3255 dB(A)
17Airwell Wellea Monobloc HT4.5 kW5.07R29056 dB(A)
18Panasonic Aquarea L Series5 kW5.06R29052 dB(A)
19Qvantum QA6.38 kW5.05R29058 dB(A)
20Grant Aerona 2901.25–4.36 kW5R29048 dB(A)

Rankings are generated automatically from manufacturer-published data in the Heat Pump Database and refresh as new products are added. Figures come from different manufacturers’ datasheets and certification documents; always confirm specifications with the manufacturer. Products without the relevant published figure are excluded.

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