Mitsubishi Ecodan vs Daikin Altherma: ASHP Compare
The two ASHP brands we install most. Both 5-14 kW, both R32 refrigerant, both MCS-listed. Different controls + slightly different SCOP.
For most Scottish 4-bed homes we install Mitsubishi Ecodan: marginally better SCOP at low ambient (Scottish winters), industry-best MELCloud controls, longer UK track record. Daikin Altherma 3 is competitive on price and excellent on hot-water cylinder integration.
Side-by-side spec compare
| Spec | A | B | Winner |
|---|---|---|---|
| Capacity range | 5 / 8.5 / 11.2 / 14 kW | 4 / 6 / 8 / 11 / 14 / 16 kW | B |
| SCOP (BS EN 14825 35°C) | 4.4 (best in class) | 4.3 | A |
| SCOP at -7°C ambient | 2.9 | 2.7 | A |
| Refrigerant | R32 | R32 | = |
| Controls | MELCloud (best in class) | Daikin Onecta (good) | A |
| Noise (sound power) | 48-58 dB(A) | 50-60 dB(A) | A |
| Hot water cylinder | Sold separately | Matched cylinder option | B |
| Warranty | 7 yrs | 5 yrs (10 with annual service) | A |
| Price installed (12 kW) | £14,500 | £13,800 | B |
Which one is right for you?
Marginally better SCOP at -7°C ambient — relevant for Highland and Borders winters.
Matched cylinder kit shaves £500-800 off total.
MELCloud is the most polished ASHP control platform on the market.
Lower noise floor matters when the outdoor unit is near a bedroom wall.
Still not sure which is right for your house?
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