G
Grant UK
British-designed for British homes
BUS Grant: £7,500BUS EligibleMCS Approved
8
Overall score
out of 10
Grant UK is a strong choice for UK homeowners. From UK, founded 1979. Heat output range: 6 kW - 17 kW. SCOP: Up to 3.8. Noise: 42-52 dB.
Key specifications
OriginUK
Founded1979
Heat output6 kW - 17 kW
Max SCOPUp to 3.8
Noise level42-52 dB
Warranty5 years
Score breakdown
Efficiency (SCOP)
8
Reliability
8.2
Installation
9
After-sales support
9.2
Value for money
8.5
Post-grant installed price
£3,800 - £8,000
After £7,500 BUS grant. Best UK support network.
+Pros
- UK company with UK-based support
- Designed for older UK housing stock
- Excellent installer support and training
- Good value pricing
- Large oil-boiler replacement experience
-Cons
- SCOP ratings slightly lower than Japanese brands
- Less experience in dense urban installations
- Smaller product range
Best for
Rural off-gas propertiesOil boiler replacementsOlder housing stock
Not ideal for
Maximum efficiency seekersNew builds
Top models
| Model | Heat output | SCOP | Approx. installed price |
|---|---|---|---|
| Aerona3 6kW | 6 kW | 3.8 | £4,500-7,000 installed |
| Aerona3 10kW | 10 kW | 3.7 | £6,000-8,500 installed |
| Aerona3 17kW | 17 kW | 3.6 | £7,500-10,500 installed |
Prices shown include installation and are after the £7,500 BUS grant where applicable. Correct as of April 2026.
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Important disclaimer
heatpumpcompared.co.uk is editorially independent and not affiliated with any heat pump manufacturer or installer. We do not provide heating advice. Prices, specifications, SCOP ratings and grant amounts are correct as of April 2026 but are subject to change. Always commission a professional heat loss survey before purchasing a heat pump system.