Most efficient 6–8 kW heat pumps
221 models in our database meet this; below the first 25 in order.
Criteria:
- Rated output 35 °C from 6 up to 8 kW
- Sorted by: SCOP (35 °C) (highest first)
Only models for which these figures are known. This is a ranking by data, not a test or recommendation; the source of every value is on the product page.
| # | Model1,2 | SCOP (35 °C) | Rated output 35 °C | SCOP (55 °C) | Outdoor unit sound power | Refrigerant |
|---|---|---|---|---|---|---|
| 1 | Bosch Compress CS7800i LW 6 M/MB/F | 7.7 | 7.8 kW | 5.25 | – | R410A |
| 2 | Bosch CS7800i LW 6 (+F) | 7.7 | 7.8 kW | 5.24 | – | R410A |
| 3 | Buderus WSW196i.2-6 (+W) / 186-6 | 7.7 | 7.8 kW | 5.24 | – | R410A |
| 4 | CTA OH CT 6s (Wasser/Wasser) | 7.28 | 7 kW | 5.19 | – | R290 |
| 5 | HOTJET CZ 7 WX (Wasser / Wasser) | 7.23 | 7.47 kW | 5.34 | – | R454B |
| 6 | Kermi x-change dynamic water pro S | 7.12 | 7.53 kW | 4.81 | – | R290 |
| 7 | NIBE F1153-6 PC | 6.95 | 7 kW | 5.55 | – | R407C |
| 8 | Mitsubishi Electric EHWT17D-MHEDW | 6.87 | 7 kW | 4.69 | – | R32 |
| 9 | Exinda XDASH06C3A | 6.32 | 6.7 kW | 3.89 | 53 dB(A) | R290 |
| 10 | ELCO AQUATOP S06 | 6.28 | 6.67 kW | 6 | – | R410A |
| 11 | ELCO AQUATOP S06 (Wasser / Wasser) | 6.28 | 6.67 kW | 4.75 | – | R410A |
| 12 | STIEBEL ELTRON WPE-I 05 H 400 Plus | 6.12 | 7.85 kW | 4.58 | – | R452B |
| 13 | Tecalor TTC 5.5 | 6.12 | 7.85 kW | 4.58 | – | R452B |
| 14 | Thermia Legend 6 400V | 6.12 | 7.85 kW | 4.58 | – | R452B |
| 15 | Thermia Legend 6 400V | 6.12 | 7.85 kW | 4.58 | – | R452B |
| 16 | Thermia Legend 6 400V (Wasser / Wasser) | 6.12 | 7.85 kW | 4.58 | – | R452B |
| 17 | TCL THM6DFB | 5.65 | 6.5 kW | 4.3 | 53.3 dB(A) | R290 |
| 18 | REMKO HTS 95 | 5.61 | 6.55 kW | 3.85 | 58.7 dB(A) | R32 |
| 19 | TEMPLARI Unità esterna KITA-SP-8, 1Ph, vers. MONOBLOCCO R-290 | 5.61 | 6.53 kW | 4.1 | 50 dB(A) | R290 |
| 20 | M-TEC VHPA27 | 5.51 | 7.65 kW | 4.14 | – | R290 |
| 21 | Ovum Heiztechnik CU107P | 5.48 | 6 kW | 4.15 | – | R290 |
| 22 | SolarEast BLN-006TE1 | 5.42 | 6.02 kW | 3.97 | 52 dB(A) | R290 |
| 23 | CTC GSi 608 | 5.39 | 7 kW | 4.17 | – | R407C |
| 24 | Enpal EODU-V8-M1-AW-9E | 5.35 | 7.9 kW | 4.05 | 53 dB(A) | R290 |
| 25 | Goodheat GSHVSH-6AA1 | 5.35 | 6.07 kW | 4 | 57 dB(A) | R290 |
More selections
- Quietest 4–6 kW heat pumps
- Most efficient 4–6 kW heat pumps
- Quietest 6–8 kW heat pumps
- Quietest 8–10 kW heat pumps
- Most efficient 8–10 kW heat pumps
- Quietest 10–14 kW heat pumps
- Most efficient 10–14 kW heat pumps
- Heat pumps with R290 (propane)
- Most efficient heat pumps for radiators (55 °C)
- Air-to-water heat pumps
- Ground-source heat pumps (brine-to-water)
- Water-to-water heat pumps (groundwater)
- Hybrid heat pumps (with a gas boiler)
Sources
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026