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Heat Pump Brands Compared — UK
Compare the leading UK air source heat pump brands — Mitsubishi, Daikin, Samsung, Vaillant and Grant — on COP, noise, warranty and MCS certification.
Brand Comparison Table
| Feature | Mitsubishi | Daikin | Samsung | Vaillant | Grant |
|---|---|---|---|---|---|
| Top model | Ecodan R32 | Altherma 3 | Gen 6 EHS | aroTHERM plus | Aerona3 R32 |
| SCOP | 3.5-4.0 | 3.8-4.2 | 4.0-4.5 | 3.8-4.2 | 3.5-3.9 |
| Noise at 3m | 38-45 dB(A) | 35-38 dB(A) | 35 dB(A) | 29 dB(A) | 40-42 dB(A) |
| Refrigerant | R32 | R32 | R32 | R290 | R32 |
| Warranty | 5 years | 5 years | 5 years | 7 years | 7 years |
| Installed cost | £8-12K | £9-13K | £7-10K | £9-14K | £8-11K |
Brand Strengths
- Mitsubishi — Largest UK install base, extensive training network, proven track record
- Daikin — Premium Japanese engineering, excellent controls, integrated hot water
- Samsung — Best value for money, high SCOP, competitive pricing
- Vaillant — Quietest units, R290 refrigerant, best for tight sites near neighbours
- Grant — Strong in off-grid market, good for oil-to-heat-pump conversions, Irish/UK support
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Last updated: April 2026
Verified against UK standards · estimates only, confirm with your supplier.