We’ve reviewed the top-performing air source heat pumps available in the UK in 2026. Includes efficiency ratings, noise levels, and real-world performance data.
Top Models Compared
| Brand | Model | COP | Noise | From | Warranty |
|---|---|---|---|---|---|
| Daikin | Altherma | 4.6 | 42 dB | £7,000 | 10 years |
| Mitsubishi | Ecodan | 4.2 | 40 dB | £7,500 | 10 years |
| Samsung | EHS | 5.1 | 38 dB | £6,500 | 10 years |
| Vaillant | aroTHERM | 4.4 | 41 dB | £8,000 | 10 years |
| Grant | Aerona | 4.2 | 42 dB | £7,000 | 10 years |
1. Daikin Altherma – Best Reliability
COP: 4.6 | Noise: 42 dB | Cost: £7,000-£9,000 | Warranty: 10 years
Japanese manufacturer with excellent reliability reputation. Most installed heat pump globally. Quiet operation at 42 dB. Excellent customer support in UK.
2. Samsung EHS – Best Efficiency
COP: 5.1 | Noise: 38 dB | Cost: £6,500-£8,000 | Warranty: 10 years
Highest COP available (5.1). Quietest at 38 dB. Good value pricing. Growing UK installer network. Best for maximum efficiency.
3. Mitsubishi Ecodan – Best Balance
COP: 4.2 | Noise: 40 dB | Cost: £7,500-£9,500 | Warranty: 10 years
Proven reliability. Excellent support network. Good COP and low noise. Premium option with excellent build quality.
4. Vaillant aroTHERM – Premium Option
COP: 4.4 | Noise: 41 dB | Cost: £8,000-£10,000 | Warranty: 10 years
German engineering. Integrates with Vaillant boiler systems. Premium build quality. Best for maximum integration.
5. Grant Aerona – Best Value
COP: 4.2 | Noise: 42 dB | Cost: £7,000-£8,500 | Warranty: 10 years
Excellent value for money. Proven technology. Good COP performance. Best budget option with quality assurance.
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