Air-to-water heat pumps
Take heat from the outside air and pass it to the heating water for underfloor heating or radiators, usually also for hot water. The most commonly installed type.
998 models in our database meet this; below the first 25 in order.
Criteria:
- Type (source): Air-to-water
- 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 | Exinda XDASH06C3A | 6.32 | 6.7 kW | 3.89 | 53 dB(A) | R290 |
| 2 | TCL THM8DFC | 5.84 | 8.1 kW | 4.38 | 51.94 dB(A) | R290 |
| 3 | TCL THM4DF3dB | 5.8 | 5.2 kW | 4.37 | 51 dB(A) | R290 |
| 4 | TCL THM4DFB | 5.8 | 5.2 kW | 4.37 | 50.88 dB(A) | R290 |
| 5 | TEMPLARI Unità esterna KITA-SP-10, 1Ph, vers. MONOBLOCCO R-290 | 5.75 | 8.34 kW | 4.2 | 50 dB(A) | R290 |
| 6 | TEMPLARI UNITÀ ESTERNA KITA-LP PLUS-35, 3PH, VERS. MONOBLOCCO R-290 | 5.71 | 29 kW | 4.17 | 61 dB(A) | R290 |
| 7 | REMKO HTS 205 | 5.65 | 13.6 kW | 3.92 | 58.7 dB(A) | R32 |
| 8 | TCL THM6DFB | 5.65 | 6.5 kW | 4.3 | 53.3 dB(A) | R290 |
| 9 | REMKO HTS 265 | 5.61 | 18.02 kW | 3.84 | 58.7 dB(A) | R32 |
| 10 | REMKO HTS 95 | 5.61 | 6.55 kW | 3.85 | 58.7 dB(A) | R32 |
| 11 | TEMPLARI Unità esterna KITA-SP-8, 1Ph, vers. MONOBLOCCO R-290 | 5.61 | 6.53 kW | 4.1 | 50 dB(A) | R290 |
| 12 | REMKO HTS 135 | 5.57 | 9.4 kW | 3.83 | 58 dB(A) | R32 |
| 13 | TEMPLARI UNITÀ ESTERNA KITA-LP PLUS-40, 3PH, VERS. MONOBLOCCO R-290 | 5.55 | 33.25 kW | 4.12 | 50.1 dB(A) | R290 |
| 14 | TEMPLARI Unità esterna KITA-LP-26, 3Ph, vers. MONOBLOCCO R-290 | 5.51 | 22.02 kW | 4.15 | 61 dB(A) | R290 |
| 15 | M-TEC AHPA413 | 5.5 | 10.67 kW | 4.3 | 46 dB(A) | R290 |
| 16 | TCL THM10DFC | 5.5 | 10.21 kW | 4.22 | 53.37 dB(A) | R290 |
| 17 | ACOND Grandis-L16 | 5.49 | 15.5 kW | 4.03 | 48 dB(A) | R290 |
| 18 | M-TEC AHPC618 | 5.48 | 15.9 kW | 4.24 | 64.6 dB(A) | R290 |
| 19 | TEMPLARI Unità esterna KITA-LP-28, 3Ph, vers. MONOBLOCCO R-290 | 5.46 | 23.67 kW | 4.12 | 50 dB(A) | R290 |
| 20 | REMKO WKM 175 Pro | 5.45 | 14.33 kW | 4.17 | 58 dB(A) | R290 |
| 21 | TEMPLARI Unità esterna KITA-SP-12, 1Ph, vers. MONOBLOCCO R-290 | 5.44 | 12.41 kW | 4.05 | 50 dB(A) | R290 |
| 22 | KW Energie smartblock heat pump 72 | 5.42 | 64 kW | 4.13 | 74.7 dB(A) | R290 |
| 23 | SolarEast BLN-006TE1 | 5.42 | 6.02 kW | 3.97 | 52 dB(A) | R290 |
| 24 | Fairland iGXC13T | 5.41 | 12.87 kW | 4.1 | 52 dB(A) | R290 |
| 25 | Bosch Compress CS8800iAW 11 O-T (B) | 5.4 | 11 kW | 4.12 | 45 dB(A) | R290 |
More selections
- Quietest 4–6 kW heat pumps
- Most efficient 4–6 kW heat pumps
- Quietest 6–8 kW heat pumps
- Most efficient 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)
- 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