Best Heat Pumps — Rankings
7 data-driven rankings · updated 2026-09-11
Every ranking below is generated automatically from the specifications in the Heat Pump Database, compared at matching test conditions wherever possible, and updates as new products are added.
Best Overall Air Source Heat Pumps
Top 10 of 274 qualifying ASHPs · updated 2026-09-11
Each qualifying air source heat pump is scored 0–10 on three measures - SCOP at 35°C flow, published sound power level, and price per kW of peak heating capacity - scaled between the best and worst product in the qualifying pool, with lower noise and lower price per kW scoring higher. The three 0–10 scores are added for a total out of 30. Unlike the single-metric rankings elsewhere on this site, a blended score like this can place a product highly even if it doesn’t lead on any one measure, and a product with the single highest SCOP can be overtaken by one that’s merely good across all three. Limited to residential-sized (under 20kW) air source heat pumps with a published SCOP at W35, sound power level and price all available.
A single blended ranking across efficiency, noise and price, rather than one metric at a time like the rankings below.
| # | Model | Capacity | SCOP (W35) | Noise | £/kW | Score |
|---|---|---|---|---|---|---|
| 1 |  LG Therma V R290 Monobloc 12kW | 12 kW | 5.45 (9.3/10) | 49 dB(A) (7.6/10) | £310 (8.4/10) | 25.2 |
| 2 | LG Therma V R290 Monobloc 14kW | 14 kW | 5.38 (8.9/10) | 51 dB(A) (7.0/10) | £288 (8.6/10) | 24.5 |
| 3 |  Baxi HP60 High Monobloc, 4kW | 4.4–6.86 kW | 5.34 (8.7/10) | 48 dB(A) (7.8/10) | £446 (7.4/10) | 23.9 |
| 4 | Baxi HP60 High Monobloc, 8kW | 8.5–11.05 kW | 5.2 (7.9/10) | 49 dB(A) (7.6/10) | £317 (8.3/10) | 23.8 |
| 5 |  Acond Grandis-R | 8.8 kW | 5.58 (10.0/10) | 47.7 dB(A) (7.9/10) | £688 (5.5/10) | 23.4 |
| 6 | LG Therma V R290 Monobloc 9kW | 9 kW | 5.23 (8.0/10) | 49 dB(A) (7.6/10) | £391 (7.8/10) | 23.4 |
| 7 | Baxi HP60 High Monobloc, 6kW | 6.26–7.7 kW | 5.22 (8.0/10) | 48 dB(A) (7.8/10) | £426 (7.5/10) | 23.3 |
| 8 | LG Therma V R290 Monobloc 16kW | 16 kW | 5.11 (7.4/10) | 52 dB(A) (6.8/10) | £267 (8.7/10) | 22.9 |
| 9 |  CTC EcoAir C100 C116 (230V) | 17.97 kW | 5.15 (7.6/10) | 52 dB(A) (6.8/10) | £316 (8.4/10) | 22.7 |
| 10 | CTC EcoAir C100 C116 (400V) | 17.97 kW | 5.15 (7.6/10) | 52 dB(A) (6.8/10) | £320 (8.3/10) | 22.7 |
Best Air Source Heat Pumps by SCOP
Top 10 of 1455 qualifying products · updated 2026-09-11
Ranked by SCOP (seasonal coefficient of performance) at a 35°C flow temperature — the fairest single measure of real-world heating efficiency. Only products with a published SCOP at W35 are included.
| # | Model | Capacity | SCOP (W35) | Refrigerant | Noise |
|---|---|---|---|---|---|
| 1 |  Kronoterm ADAPTMAX | 35.4 kW | 5.82 | R290 | 49 dB(A) |
| 2 | Kronoterm ADAPTMAX | 70.4 kW | 5.81 | R290 | 52 dB(A) |
| 3 | Kronoterm ADAPTMAX | 106.1 kW | 5.8 | R290 | 54 dB(A) |
| 4 |  M-Tec AHPA722 | 7–22 kW | 5.6 | R290 | 53 dB(A) |
| 5 | Acond Grandis-R | 8.8 kW | 5.58 | R290 | 47.7 dB(A) |
| 6 | M-Tec AHPA413 | 4–13 kW | 5.5 | R290 | 46 dB(A) |
| 7 | M-Tec WPLK722 | 4–22 kW | 5.49 | R410A | 53 dB(A) |
| 8 |  Amitime EcoSTAR R290 Pro Series M-HB | 3.7–12.2 kW | 5.48 | R290 | 50 dB(A) |
| 9 |  SOLARFOCUS vampAIR ECO | 3.7–12.2 kW | 5.48 | R290 | 50.3 dB(A) |
| 10 |  Haier HPM 14kW (400V) | 14 kW | 5.46 | R290 | 54 dB(A) |
Quietest Air Source Heat Pumps
Top 10 of 1155 qualifying products · updated 2026-09-11
Ranked by published sound power level (dB(A)) — lowest first. Limited to units up to 25 kW with a declared sound power figure, the measure used for UK permitted-development noise assessments (MCS 020).
| # | Model | Capacity | Sound power dB(A) | Refrigerant |
|---|---|---|---|---|
| 1 |  Viessmann Vitocal 200-A | 3.2–5.7 kW | 35 | R410A |
| 2 | Viessmann Vitocal 222-A | 2.4–4.2 kW | 35 | R410A |
| 3 | Kronoterm VERSI-I 1F | 6.5 kW | 36 | R452B |
| 4 | Kronoterm VERSI-I 3F (400V) | 6.5 kW | 36 | R452B |
| 5 | Kronoterm VERSI-X 1F | 6.5 kW | 36 | R452B |
| 6 |  Heliotherm COMPLETE Air Split Heat Pump | 2–7 kW | 37 | R-410A |
| 7 | Heliotherm CUBE Air Split Heat Pump | 7 kW | 37 | R-410A |
| 8 | Kronoterm ADAPT 2 L | 4.5–18 kW | 38 | R290 |
| 9 |  Bosch Compress 5800i AW 4 | 4 kW | 40 | R290 |
| 10 | Heliotherm Air Heat Pump Split Design | 2.4–10.3 kW | 40 | Not stated |
Best R290 (Propane) Heat Pumps
Top 10 of 609 qualifying products · updated 2026-09-11
R290 (propane) is a natural refrigerant with a GWP of just 3, and typically enables higher flow temperatures. These are the most efficient R290 heat pumps in the database, ranked by SCOP.
| # | Model | Capacity | SCOP | Refrigerant | Noise |
|---|---|---|---|---|---|
| 1 |  Rhoss MidiFLOW-PI THHITP 140 | 44.7 kW | 7.32 | R290 | |
| 2 | Rhoss MidiFLOW-PI THHITP 125 | 30.1 kW | 7.17 | R290 | |
| 3 | Rhoss MidiFLOW-PI THHITP 145 | 51.2 kW | 7.13 | R290 | |
| 4 | Rhoss MidiFLOW-PI THHITP 130 | 35.1 kW | 7.04 | R290 | |
| 5 | Rhoss MidiFLOW-PI THHITP 135 | 39.2 kW | 6.94 | R290 | |
| 6 | Rhoss MidiFLOW-PI THHITP 120 | 21.7 kW | 6.57 | R290 | |
| 7 | Rhoss MidiFLOW-PI THHITP 115 | 17.6 kW | 6.55 | R290 | |
| 8 |  Swegon SIGMA Zero Hi HPW | 43.6 kW | 6.53 | R290 | 78 dB(A) |
| 9 |  Keyter Medea Pro 1015 | 26.1 kW | 6.5 | R290 | |
| 10 | Swegon SIGMA Zero Hi HPW | 37.7 kW | 6.49 | R290 | 78 dB(A) |
Best Small Heat Pumps (3–6 kW)
Top 10 of 136 qualifying products · updated 2026-09-11
Small-capacity heat pumps (3–6 kW) suit well-insulated flats and smaller homes. Ranked by SCOP — seasonal efficiency at 35°C flow.
| # | 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) |
Best Medium Heat Pumps (7–12 kW)
Top 10 of 347 qualifying products · updated 2026-09-11
The 7–12 kW band covers most three- and four-bedroom UK homes. Ranked by SCOP — seasonal efficiency at 35°C flow.
| # | Model | Capacity | SCOP | Refrigerant | Noise |
|---|---|---|---|---|---|
| 1 | Acond Grandis-R | 8.8 kW | 5.58 | R290 | 47.7 dB(A) |
| 2 | LG Therma V R290 Monobloc 12kW | 12 kW | 5.45 | R290 | 49 dB(A) |
| 3 | SolaX R290 Series | 8.5 kW | 5.44 | R290 | 49 dB(A) |
| 4 | Baxi HP60 High Monobloc, 4kW | 4.4–6.86 kW | 5.34 | R290 | 48 dB(A) |
| 5 | Nibe S2125 | 10.31 kW | 5.33 | R290 | 55 dB(A) |
| 6 | SolarEast BLN Series | 8 kW | 5.33 | R290 | 50 dB(A) |
| 7 | M-Tec AHPA412 | 4–12 kW | 5.3 | R290 | 44 dB(A) |
| 8 | SolaX R290 Series | 10 kW | 5.3 | R290 | 49 dB(A) |
| 9 | SolarEast BLN Series | 8 kW | 5.28 | R290 | 50 dB(A) |
| 10 | Haier HPM 8kW | 8 kW | 5.25 | R290 | 50 dB(A) |
Best Large Heat Pumps (13–25 kW)
Top 10 of 367 qualifying products · updated 2026-09-11
Large-capacity units (13–25 kW) suit big or older homes and light commercial use. Ranked by SCOP — seasonal efficiency at 35°C flow.
| # | Model | Capacity | SCOP | Refrigerant | Noise |
|---|---|---|---|---|---|
| 1 |  Hoval Belaria pro | 11.8–24 kW | 5.7 | R290 | 58 dB(A) |
| 2 | Hoval Belaria pro | 10.6–19.2 kW | 5.6 | R290 | 61 dB(A) |
| 3 | M-Tec AHPA722 | 7–22 kW | 5.6 | R290 | 53 dB(A) |
| 4 | M-Tec AHPA413 | 4–13 kW | 5.5 | R290 | 46 dB(A) |
| 5 | M-Tec WPLK722 | 4–22 kW | 5.49 | R410A | 53 dB(A) |
| 6 | Amitime EcoSTAR R290 Pro Series M-HB | 3.7–12.2 kW | 5.48 | R290 | 50 dB(A) |
| 7 | SOLARFOCUS vampAIR ECO | 3.7–12.2 kW | 5.48 | R290 | 50.3 dB(A) |
| 8 | Haier HPM 14kW (400V) | 14 kW | 5.46 | R290 | 54 dB(A) |
| 9 | Haier HPM 14kW | 14 kW | 5.42 | R290 | 68 dB(A) |
| 10 | Haier HPM 16kW (400V) | 16 kW | 5.41 | R290 | 55 dB(A) |