Air Source Heat Pump Comparison Chart (UK, 2026)
Every one of the 21 models we track from 13 brands sold in the UK, on one chart. Tap a column to sort. On certified efficiency the LG Therma V Therma V R290 Monobloc 12kW leads at a SCOP of 5.33 at 35°C flow; sort by SCOP at 55°C if you are keeping your existing radiators, or by sound power if the unit sits near a neighbour.
| LG Therma VTherma V R290 Monobloc 12kW · R290 | 12 kW | 5.33 | 3.86 | 49 dB(A) | 75°C | ~£575/yr | On quote |
| Grant Aerona3Aerona3 R32 10kW · R32 | 10 kW | 5.20 | 3.47 | 64 dB(A) | 60°C | ~£605/yr | £1,000 |
| Ideal Logic AirLogic Air 8kW · R32 | 8 kW | 5.09 | 3.63 | 55 dB(A) | Not published | ~£605/yr | On quote |
| LG Therma VTherma V R290 Monobloc 9kW · R290 | 9 kW | 5.04 | 3.75 | 50 dB(A) | 75°C | ~£600/yr | On quote |
| Vaillant aroTHERM plusaroTHERM plus 12kW · R290 | 12 kW | 4.88 | 3.63 | 60 dB(A) | 75°C | ~£620/yr | £3,500 |
| NIBE S2125NIBE S2125-8 · R290 | 8 kW | 4.80 | 3.59 | 49 dB(A) | 75°C | ~£625/yr | On quote |
| NIBE S2125NIBE S2125-12 · R290 | 12 kW | 4.80 | 3.71 | 49 dB(A) | 75°C | ~£620/yr | On quote |
| Panasonic AquareaAquarea L Series 9kW · R290 | 9 kW | 4.71 | 3.57 | 54 dB(A) | 75°C | ~£635/yr | On quote |
| Mitsubishi Electric EcodanEcodan R290 10kW · R290 | 10 kW | 4.62 | 3.48 | 55 dB(A) | 75°C | ~£650/yr | £2,500 |
| Panasonic AquareaAquarea T-CAP M Series 12kW · R290 | 12 kW | 4.62 | 3.55 | 53 dB(A) | 75°C | ~£645/yr | On quote |
| AiraAira 8kW · R290 | 8 kW | 4.62 | 3.52 | 56 dB(A) | 70°C | ~£645/yr | £6,729 |
| Ideal Logic AirLogic Air 10kW · R32 | 10 kW | 4.57 | 3.65 | 55 dB(A) | Not published | ~£640/yr | On quote |
| Worcester BoschCompress 5800i AW 7kW · R290 | 7 kW | 4.54 | 3.29 | 42 dB(A) | 75°C | ~£670/yr | £1,500 |
| Mitsubishi Electric EcodanEcodan R290 8.5kW · R290 | 8.5 kW | 4.47 | 3.51 | 54 dB(A) | 75°C | ~£660/yr | £1,500 |
| Daikin AlthermaAltherma 3 H HT 14kW · R32 | 14 kW | 4.47 | 3.54 | 54 dB(A) | 70°C | ~£655/yr | £2,500 |
| Samsung EHSEHS Mono HT Quiet 8kW · R32 | 8 kW | 4.46 | 3.22 | 56 dB(A) | 70°C | ~£685/yr | £500 |
| Daikin AlthermaAltherma 3 R 8kW · R32 | 8 kW | 4.36 | 3.24 | 62 dB(A) | 65°C | ~£695/yr | £0 |
| Vaillant aroTHERM plusaroTHERM plus 7kW · R290 | 7 kW | 4.36 | 3.39 | 55 dB(A) | 75°C | ~£680/yr | £2,500 |
| Octopus CosyCosy 9 · R290 | 9 kW | 4.36 | 3.43 | 56 dB(A) | 70°C | ~£675/yr | £1,500 |
| Octopus CosyCosy 6 · R290 | 6 kW | 4.31 | 3.23 | 58 dB(A) | 70°C | ~£700/yr | £500 |
| Viessmann VitocalVitocal 150-A 08 · R290 | 8 kW | 4.20 | 3.46 | 51 dB(A) | 70°C | ~£685/yr | £2,500 |
SCOP: MCS-certified seasonal efficiency (higher is better). Sound power: the maker's declared ErP figure, the like-for-like noise measure (lower is quieter). Running cost: Estimate for 10,000 kWh of heat a year at 26.32p per kWh (Ofgem price cap, October to December 2026), at a 45°C design flow temperature: the midpoint of the certified 35°C and 55°C SCOPs."From, after grant" is PumpSwap's indicative installed price minus the £7,500 Boiler Upgrade Scheme grant (England and Wales); "On quote" means no installed price is published. Free to cite with a link to this page.
Want a shortlist rather than a chart? See the best air source heat pumps for 2026, ranked for quiet, efficiency and older homes.
Compare the brands
Side-by-side comparison of the 13 air source heat pump brands with a verified UK presence. Installed prices before any support run from £7,000 (Daikin Altherma) to £19,500 (Aira); Panasonic Aquarea, NIBE S2125, LG Therma V, Ideal Logic Air publish no installed price. In England and Wales the £7,500 Boiler Upgrade Scheme grant comes off every one of these (£9,000 for oil and LPG heated homes until March 2027), claimed for you by your MCS-certified installer. Scotland uses the Home Energy Scotland grant and loan instead; Northern Ireland currently has no equivalent.
Specs checked October 2026; prices are PumpSwap's indicative estimates.
Head-to-head comparisons
All 78 pairings from the 13 UK-market brands, with the angle that matters for each.
UK-built R290 monobloc vs a split system with a compact outdoor unit
Two R290 units reaching 75°C: UK-built vs the most monitored model on heatpumpmonitor.org
Fitted by independent MCS installers vs the Octopus package
UK-built R290 vs a high-temperature R32 monobloc
75°C R290 flow vs a light, compact R32 unit
UK-built Ecodan vs Worcester Bosch's Compress 5800i, both R290
Two R290 monoblocs: UK-built vs German
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Split or high-temperature R32 vs R290 at up to 75°C
Fitted by independent MCS installers vs the Octopus package
Two R32 systems: split vs high-temperature monobloc
Split and high-temperature options vs a compact R32 monobloc
R32 split vs an R290 monobloc with a low declared sound power
R32 split vs a German R290 monobloc
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
The most monitored R290 unit vs the Octopus package
R290 at up to 75°C vs R32 at up to 70°C
R290 at up to 75°C vs R32 at up to 60°C
Two R290 units reaching 75°C from boiler-brand names
The all-German R290 head to head
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
The Octopus package vs a monobloc fitted by independent installers
The Octopus package vs an R32 unit sold through G1 installers
Two UK brands: Octopus Cosy vs Worcester Bosch
The Octopus package vs a German R290 monobloc
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Two R32 monoblocs: higher flow temperature vs higher certified efficiency at 35°C
High-temperature R32 monobloc vs the R290 Compress 5800i
R32 vs R290 monoblocs
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Compact R32 for oil swaps vs a low-noise R290 unit
R32 at up to 60°C vs R290 at up to 70°C
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Two R290 monoblocs: Worcester Bosch vs Viessmann
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
Specs, pricing and warranty side by side
| Feature | Mitsubishi Electric Ecodan | Daikin Altherma | Vaillant aroTHERM plus | Octopus Cosy | Samsung EHS | Grant Aerona3 | Worcester Bosch | Viessmann Vitocal | Panasonic Aquarea | NIBE S2125 | LG Therma V | Ideal Logic Air | Aira |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Installed price (before grant) | £9,000 - £14,000 | £7,000 - £14,000 | £10,000 - £16,000 | £8,000 - £12,000 | £8,000 - £12,000 | £8,000 - £13,000 | £9,000 - £14,000 | £10,000 - £16,000 | Price on quote | Price on quote | Price on quote | Price on quote | £14,229 - £19,500 |
| After £7,500 grant (illustrative) | £1,500 - £6,500 | £0 - £6,500 | £2,500 - £8,500 | £500 - £4,500 | £500 - £4,500 | £500 - £5,500 | £1,500 - £6,500 | £2,500 - £8,500 | Price on quote | Price on quote | Price on quote | Price on quote | £6,729 - £12,000 |
| SCOP at 35°C (MCS) | 4.62 | 4.47 | 4.88 | 4.36 | 4.46 | 5.2 | 4.54 | 4.2 | 4.71 | 4.8 | 5.33Best | 5.09 | 4.62 |
| SCOP at 55°C (MCS) | 3.51 | 3.54 | 3.63 | 3.43 | 3.22 | 3.47 | 3.29 | 3.46 | 3.57 | 3.71 | 3.86Best | 3.65 | 3.52 |
| Largest size | 10kW | 14kW | 12kW | 9kW | 8kW | 10kW | 7kW | 8kW | 12kW | 12kW | 12kW | 10kW | 8kW |
| Standard warranty | 3 years | 2 years | 2 years | 8 yearsBest | Not published | 1 year | 2 years | 2 years | 3 years | 2 years | 3 years | Not published | 5 years |
| Longest warranty (conditions apply) | 7 years | 7 years | 7 years | 8 years | Not published | 7 years | 7 years | 7 years | 7 years | 7 years | 7 years | 7 years | 15 years |
| Sound power (declared) | 54 dB(A) | 54 dB(A) | 55 dB(A) | 56 dB(A) | 56 dB(A) | 64 dB(A) | 42 dB(A)Lowest | 51 dB(A) | 53 dB(A) | 49 dB(A) | 49 dB(A) | 55 dB(A) | 56 dB(A) |
| Annual running cost (est., 45°C flow) | ~£650/yr | ~£655/yr | ~£620/yr | ~£675/yr | ~£685/yr | ~£605/yr | ~£670/yr | ~£685/yr | ~£635/yr | ~£620/yr | ~£575/yrLowest | ~£605/yr | ~£645/yr |
| UK brand | Yes | No | No | Yes | No | No | Yes | No | No | No | No | Yes | No |
| Country | Japan / UK | Japan | Germany | UK | South Korea | Ireland | UK | Germany | Japan | Sweden | South Korea | UK | Sweden |
| Best for | Homes keeping their existing radiators, from a UK-built range | Buyers wanting a split system with a small outdoor unit, or 70°C flow for radiators (3 H HT) | Efficiency-first buyers who want a proven, widely monitored unit | Price-led switchers happy to buy and install through Octopus | Buyers using an independent MCS installer who want a high-temperature monobloc | Off-gas homes replacing oil or LPG heating, where the £9,000 grant can apply in England and Wales | Homes where noise matters most, or Worcester boiler owners staying with the brand | Smaller or new-build homes wanting a quiet R290 unit | Homeowners who want a mainstream Japanese brand with R290 models, including a T-CAP unit that holds full output in cold weather | Buyers who put quiet running and a long warranty first, and will use a NIBE Pro installer | Homeowners who want a quiet R290 monobloc with strong cold-weather output from a major electronics brand | Households who want a UK-built heat pump from a familiar boiler brand, installed through Ideal's installer network | Homeowners who want one company to handle design, installation and upkeep, and are happy to pay a monthly plan for 15-year cover |
SCOP is the MCS-certified seasonal efficiency; sound power is the maker's declared ErP figure, the like-for-like noise measure; warranties show the standard term and the longest available with conditions (specs checked October 2026). Prices are indicative and shown before the Boiler Upgrade Scheme grant unless stated; post-grant figures illustrate the £7,500 grant in England and Wales. Running costs: Estimate for 10,000 kWh of heat a year at 26.32p per kWh (Ofgem price cap, October to December 2026), at a 45°C design flow temperature: the midpoint of the certified 35°C and 55°C SCOPs. Confirm current models and exact pricing with your MCS-certified installer.
Detailed Brand Reviews
Mitsubishi Electric Ecodan
Japan / UK | UK brandHomes keeping their existing radiators, from a UK-built range
Daikin Altherma
JapanBuyers wanting a split system with a small outdoor unit, or 70°C flow for radiators (3 H HT)
Vaillant aroTHERM plus
GermanyEfficiency-first buyers who want a proven, widely monitored unit
Octopus Cosy
UK | UK brandPrice-led switchers happy to buy and install through Octopus
Samsung EHS
South KoreaBuyers using an independent MCS installer who want a high-temperature monobloc
Grant Aerona3
IrelandOff-gas homes replacing oil or LPG heating, where the £9,000 grant can apply in England and Wales
Worcester Bosch
UK | UK brandHomes where noise matters most, or Worcester boiler owners staying with the brand
Viessmann Vitocal
GermanySmaller or new-build homes wanting a quiet R290 unit
Panasonic Aquarea
JapanHomeowners who want a mainstream Japanese brand with R290 models, including a T-CAP unit that holds full output in cold weather
NIBE S2125
SwedenBuyers who put quiet running and a long warranty first, and will use a NIBE Pro installer
LG Therma V
South KoreaHomeowners who want a quiet R290 monobloc with strong cold-weather output from a major electronics brand
Ideal Logic Air
UK | UK brandHouseholds who want a UK-built heat pump from a familiar boiler brand, installed through Ideal's installer network
Aira
SwedenHomeowners who want one company to handle design, installation and upkeep, and are happy to pay a monthly plan for 15-year cover
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