Best 6–8 kW air source heat pumps (2026)
183 models in our database meet this; below the first 25 in order.
Criteria:
- Type (source): Air-to-water
- Rated output 35 °C from 6 up to 8 kW
- Ranking: data score with these weights: SCOP (35 °C) 30 % · SCOP (55 °C) 25 % · Outdoor unit sound power 25 % · Refrigerant GWP 20 %
Air-to-water heat pumps only: ground-source and water-to-water heat pumps reach a higher SCOP thanks to their warmer source, so they cannot be compared fairly with air-to-water units. They have their own selections.
A ranking based on manufacturer and register data, not a test: we have not measured the units ourselves, and price, installation and service are not included. The source of every value is on the product page.
The ranking
Image: Kermirequest removal Kermi x-change dynamic pro S
Data score 87/100
- SCOP (35 °C) 5.68: no. 2 of 183 models
- SCOP (55 °C) 4.23: no. 2 of 182 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
SOLVIS SolvisLea 5 Pro
Data score 86/100
- SCOP (55 °C) 4.08: no. 4 of 182 models
- SCOP (35 °C) 5.35: no. 7 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
STIEBEL ELTRON WPL-A 05.2 Plus HK 230
Data score 86/100
- SCOP (55 °C) 4.08: no. 4 of 182 models
- SCOP (35 °C) 5.35: no. 7 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Tecalorrequest removal Tecalor TTL 5.1 ACS comfort
Data score 86/100
- SCOP (55 °C) 4.08: no. 4 of 182 models
- SCOP (35 °C) 5.35: no. 7 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Kermirequest removal Kermi x-change dynamic eco S
Data score 83/100
- SCOP (55 °C) 4.03: no. 9 of 182 models
- SCOP (35 °C) 5.35: no. 7 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Clivet WiSAN-PMP 1 S 3.1
Data score 82/100
- SCOP (55 °C) 3.98: no. 12 of 182 models
- SCOP (35 °C) 5.05: no. 23 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: TEMPLARIrequest removal TEMPLARI Unità esterna KITA-SP-8, 1Ph, vers. MONOBLOCCO R-290
Data score 81/100
- SCOP (55 °C) 4.1: no. 3 of 182 models
- SCOP (35 °C) 5.61: no. 4 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
SolaX ALT06-SF0
Data score 81/100
- SCOP (55 °C) 4: no. 10 of 182 models
- SCOP (35 °C) 5.1: no. 19 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Remeharequest removal Remeha Confida MB 400-6
Data score 81/100
- SCOP (35 °C) 5.22: no. 16 of 183 models
- SCOP (55 °C) 3.9: no. 14 of 182 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Hargassner AirPro 207
Data score 80/100
- Outdoor unit sound power 39 dB(A): no. 5 of 183 models
- SCOP (35 °C) 5: no. 32 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Viessmannrequest removal Viessmann Vitocal 200-A AWMOF-201.A1.08-230-V005
Data score 79/100
- SCOP (35 °C) 5.12: no. 18 of 183 models
- SCOP (55 °C) 3.9: no. 14 of 182 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: TCLrequest removal TCL THM6DFB
Data score 78/100
- SCOP (55 °C) 4.3: the best of 182 models in this selection
- SCOP (35 °C) 5.65: no. 3 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Waterkotte EcoTouch Air Bloc 7008 (230V)
Data score 78/100
- SCOP (55 °C) 3.85: no. 23 of 182 models
- SCOP (35 °C) 5: no. 32 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
SOLARFOCUS vampair ECO 08/1
Data score 78/100
- SCOP (35 °C) 5.23: no. 15 of 183 models
- SCOP (55 °C) 3.9: no. 14 of 182 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
SolarEast BLN-006TE1
Data score 78/100
- SCOP (35 °C) 5.42: no. 6 of 183 models
- SCOP (55 °C) 3.97: no. 13 of 182 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Enpal EODU-V8-M1-AW-9E
Data score 76/100
- SCOP (55 °C) 4.05: no. 8 of 182 models
- SCOP (35 °C) 5.35: no. 7 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Exinda XDASH06C3A
Data score 76/100
- SCOP (35 °C) 6.32: the best of 183 models in this selection
- SCOP (55 °C) 3.89: no. 20 of 182 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Immergasrequest removal Immergas Magis M5 Top
Data score 75/100
- SCOP (35 °C) 5.1: no. 19 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Shenling HPM-V60W/R3
Data score 72/100
- SCOP (35 °C) 5.18: no. 17 of 183 models
- SCOP (55 °C) 3.8: no. 38 of 182 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Buderusrequest removal Buderus Logaplus M WLW166i-6 MBB AR E (WLW-6 MBB AR & Logatherm WLW176i.2 E)
Data score 72/100
- SCOP (35 °C) 4.98: no. 37 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Boschrequest removal Bosch Compress 3800i AW CS3800iAW 6 OE-S
Data score 72/100
- SCOP (35 °C) 4.98: no. 37 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Buderusrequest removal Buderus WLW176i.2-6 MBB AR E
Data score 72/100
- SCOP (35 °C) 4.98: no. 37 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Image: Power Worldrequest removal Power World PW030-DKZLRS-E1/S(ODU)
Data score 71/100
- SCOP (55 °C) 3.87: no. 22 of 182 models
Choose this model if you are keeping (some) radiators and the heat pump has to run at a higher flow temperature.
Goodheat GSHVSH-6AA1
Data score 71/100
- SCOP (55 °C) 4: no. 10 of 182 models
- SCOP (35 °C) 5.35: no. 7 of 183 models
- Weaker point: Outdoor unit sound power 57 dB(A): no. 140 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
Axen KS-70W/EN7BP
Data score 71/100
- SCOP (55 °C) 3.9: no. 14 of 182 models
- SCOP (35 °C) 5.05: no. 23 of 183 models
Choose this model if you have underfloor heating and want to use as little electricity as possible.
All figures at a glance
| # | Model1,2,3 | Data score | Rated output 35 °C | SCOP (35 °C) | SCOP (55 °C) | Outdoor unit sound power | Refrigerant |
|---|---|---|---|---|---|---|---|
| 1 | Kermi x-change dynamic pro S | 87 | 7 kW | 5.68 | 4.23 | 45 dB(A) | R290 |
| 2 | SOLVIS SolvisLea 5 Pro | 86 | 6 kW | 5.35 | 4.08 | 43 dB(A) | R290 |
| 3 | STIEBEL ELTRON WPL-A 05.2 Plus HK 230 | 86 | 6 kW | 5.35 | 4.08 | 43 dB(A) | R290 |
| 4 | Tecalor TTL 5.1 ACS comfort | 86 | 6 kW | 5.35 | 4.08 | 43 dB(A) | R290 |
| 5 | Kermi x-change dynamic eco S | 83 | 6 kW | 5.35 | 4.03 | 48 dB(A) | R290 |
| 6 | Clivet WiSAN-PMP 1 S 3.1 | 82 | 6 kW | 5.05 | 3.98 | 46 dB(A) | R290 |
| 7 | TEMPLARI Unità esterna KITA-SP-8, 1Ph, vers. MONOBLOCCO R-290 | 81 | 6.53 kW | 5.61 | 4.1 | 50 dB(A) | R290 |
| 8 | SolaX ALT06-SF0 | 81 | 6 kW | 5.1 | 4 | 48 dB(A) | R290 |
| 9 | Remeha Confida MB 400-6 | 81 | 6.4 kW | 5.22 | 3.9 | 48 dB(A) | R290 |
| 10 | Hargassner AirPro 207 | 80 | 6 kW | 5 | 3.62 | 39 dB(A) | R290 |
| 11 | Viessmann Vitocal 200-A AWMOF-201.A1.08-230-V005 | 79 | 6 kW | 5.12 | 3.9 | 49 dB(A) | R290 |
| 12 | TCL THM6DFB | 78 | 7 kW | 5.65 | 4.3 | 53 dB(A) | R290 |
| 13 | Waterkotte EcoTouch Air Bloc 7008 (230V) | 78 | 7.3 kW | 5 | 3.85 | 47 dB(A) | R290 |
| 14 | SOLARFOCUS vampair ECO 08/1 | 78 | 7 kW | 5.23 | 3.9 | 50 dB(A) | R290 |
| 15 | SolarEast BLN-006TE1 | 78 | 6.02 kW | 5.42 | 3.97 | 52 dB(A) | R290 |
| 16 | Enpal EODU-V8-M1-AW-9E | 76 | 7.9 kW | 5.35 | 4.05 | 53 dB(A) | R290 |
| 17 | Exinda XDASH06C3A | 76 | 6.7 kW | 6.32 | 3.89 | 53 dB(A) | R290 |
| 18 | Immergas Magis M5 Top | 75 | 6 kW | 5.1 | 3.6 | 47 dB(A) | R290 |
| 19 | Shenling HPM-V60W/R3 | 72 | 6 kW | 5.18 | 3.8 | 52 dB(A) | R290 |
| 20 | Buderus Logaplus M WLW166i-6 MBB AR E (WLW-6 MBB AR & Logatherm WLW176i.2 E) | 72 | 6 kW | 4.98 | 3.65 | 48 dB(A) | R290 |
| 21 | Bosch Compress 3800i AW CS3800iAW 6 OE-S | 72 | 6 kW | 4.98 | 3.64 | 48 dB(A) | R290 |
| 22 | Buderus WLW176i.2-6 MBB AR E | 72 | 6 kW | 4.98 | 3.64 | 48 dB(A) | R290 |
| 23 | Power World PW030-DKZLRS-E1/S(ODU) | 71 | 6.19 kW | 4.91 | 3.87 | 49 dB(A) | R290 |
| 24 | Goodheat GSHVSH-6AA1 | 71 | 6.07 kW | 5.35 | 4 | 57 dB(A) | R290 |
| 25 | Axen KS-70W/EN7BP | 71 | 7.2 kW | 5.05 | 3.9 | 54 dB(A) | R290 |
How this ranking is made
This selection is put together automatically from the 183 models in our database that meet the criteria above. We only include models whose figures for the ranking are known: without those values a model cannot be compared fairly, so it drops out. The list is recalculated with every data update, so the order can change as soon as manufacturers or registers publish new values.
The order follows a data score from 0 to 100. For each feature we determine a model’s position relative to the other models in this selection: the best value counts as 100, the weakest as 0, and equal values share the same position. We add up those positions with weights: SCOP (35 °C) 30 % · SCOP (55 °C) 25 % · Outdoor unit sound power 25 % · Refrigerant GWP 20 %. A feature that is unknown for a model does not count; if more than 40 per cent of the weight is missing, the model is left out. If two scores are equal, SCOP (35 °C) decides.
The reasoning for each place is derived automatically from the same data. We name the features on which the model is in the best quarter of this selection, functions that not every model has, and a weaker point if the model falls in the bottom quarter on it. The line ‘Choose this model if …’ links the most heavily weighted strength to a situation where it matters. This is not a test and not personal advice: the installation, your home and the price also decide what works best for you.
The values come from EPREL and Keymark; the product page shows the source of every value. How we collect and check the data →
More selections
- Quietest 4–6 kW air-to-water heat pumps
- Most efficient 4–6 kW air-to-water heat pumps
- Quietest 6–8 kW air-to-water heat pumps
- Most efficient 6–8 kW air-to-water heat pumps
- Quietest 8–10 kW air-to-water heat pumps
- Most efficient 8–10 kW air-to-water heat pumps
- Quietest 10–14 kW air-to-water heat pumps
- Most efficient 10–14 kW air-to-water heat pumps
- Best air source heat pumps
- Best 4–6 kW air source heat pumps
- Best 8–12 kW air source heat pumps
- Best 12–16 kW air source heat pumps
- Quietest air source 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)
- Best hybrid heat pumps (with a gas boiler)
Sources
- European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 15 Oct 2026
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026