Grant Aerona3 vs Octopus Cosy 6
A side-by-side look at the Grant Aerona3 and Octopus Cosy 6. Winning figures are highlighted.
| Grant UK Grant Aerona3 | Octopus Energy Octopus Cosy 6 | |
|---|---|---|
| Price from | — | — |
| Heat output | 6 kW | 6 kW |
| Efficiency (SCOP) | 3.7 | 4.1 |
| Max flow temp | 65 °C | 65 °C |
| Refrigerant | R32 | R290 |
| Noise | 48 dB | 42 dB |
| Min operating temp | -25 °C | -20 °C |
| Type | Monobloc | Monobloc |
| Warranty | 7 yrs | 7 yrs |
Grant Aerona3
A dependable, fairly priced choice that UK installers know well. Efficiency trails the R290 leaders but it's a solid all-rounder backed by good support.
Full Grant Aerona3 review →Octopus Cosy 6
The value disruptor. Octopus's bundled install plus the grant can make a heat pump astonishingly cheap, and the Cosy 6 itself is a capable R290 unit. Best if you're an Octopus customer.
Full Octopus Cosy 6 review →