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Octopus Energy Cosy 12
Specifications and technical data
Air Source (ASHP)ResidentialR2903–12 kW
| Manufacturer | Octopus Energy |
|---|---|
| Model | Cosy 12 |
| Model code | None |
| Heat pump type | Air Source (ASHP) All Air Source heat pumps → |
| Application | Residential All Residential heat pumps → |
| Refrigerant | R290 All R290 heat pumps → |
| Mode | Heating only |
| Heating capacity | 3–12 kW |
| Max heating output (low temp) | 11.2 kW at A-5/W50 |
| COP (heating) | 4.3 at A7/W35 |
| SCOP (heating) | 4.6 at W50 |
| Operating range (air) | from -20 °C |
| Heating flow temperature | up to 75 °C |
| Electrical supply | 220-240V (Single Phase) |
| Dimensions (H×W×D) | 1375 × 855 × 595 mm |
| Operational Weight | 125 kg |
| Sound power level | 60 dB(A) (Sound Power LW(A)) |
| Data added | 21/06/2026 |
| Data source | Manufacturer Data Sheet |
| Verification | Verified by a human |
| MCS certification | ✓ MCS listed |
| MCS listing | View on MCS ↗ |
| Real-world performance data | View on HeatpumpMonitor.org ↗ |
Check noise at a neighbour’s window (MCS 020 a) →
Octopus Energy Cosy 12 is a 12 kW air source heat pump, using R290 refrigerant.
Where to buy (UK)
| Availability | Direct sales from manufacturer: Octopus Energy |
|---|
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Data is compiled from manufacturer sources and may contain errors or gaps. Always confirm specifications with the manufacturer before making decisions.
Reviews & further reading
- Manufacturer Cosy Heating — Octopus Energy
- Manufacturer Octopus heat pumps: smarter, cleaner, cosier home heating — Octopus Energy
- Review Octopus Heat Pump Review: how the Cosy system stacks up — The Independent
- Review Octopus Cosy Heat Pump Review 2026: Is It Worth It? — Heatable
- Review Octopus Cosy 6 Air Source Heat Pump — Heat Pump HQ
►What to expect from your heat pump installation with OctopusOctopus Energy
►Inside Octopus Energy's Cosy heat pump factoryOctopus Energy
►First Look: Octopus Energy Cosy 6 Heat Pump Install!Nicolas Raimo
►How Much Did My Octopus Cosy 9 Heat Pump Installation Cost? [2025 UK Price Breakdown]Switched On Network
►One month in. Octopus Heat Pump. Costs. Mistake or not?KK AND EVAlternatives to consider
Three Air Source (ASHP) heat pumps from other manufacturers closest in capacity to this one.
HP290 10kW
Ideal Heating · 241489
- Capacity
- 12 kW
- SCOP
- 4.67 (W35)
- Sound power
- 65 dB(A)
- Refrigerant
- R290
- Price
- £3,328–£3,967.37
M Thermal R290
Midea · MHC-V14W/D2N7
- Capacity
- 12 kW
- SCOP
- 4.63 (W35)
- Sound power
- 65 dB(A)
- Refrigerant
- R290
- Price
- ~£3,677
HPM 12kW
Haier · HPM12-ND2-H
- Capacity
- 12 kW
- SCOP
- 5.08 (W35)
- Sound power
- 53 dB(A)
- Refrigerant
- R290
More from Octopus Energy
Other Air Source (ASHP) heat pumps
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H-1200 CO₂
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H-1800 CO₂
ASHP · 900–1800 kW
H-2600 CO₂
ASHP · 1500–3000 kW
NX-Q-G06
ASHP · 157.5 kW
NX-Q-G06
ASHP · 174.6 kW
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The Octopus Energy name and logo are trademarks of their respective owner and are used here for identification purposes only.